Re: [Gambas-user] Serial Port issues and events.

[Alexie]

To read into an array, do something like:

Public Sub SerialPort_Read()

  Dim aData As New Byte[]
  Dim iLen As Integer

  iLen = Lof(Last)
  aData.Resize(iLen)
  Try aData.Read(Last, 0, iLen)

End


2016-06-30 17:44 GMT+02:00 ML <d4t4f...@gmail.com>:

> Fernando,
>
> I know what you mean. In my case I just wanted to show in the examples
> which bytes come and go through the port.
> I do know 0x02 ( for Gambas) is a single byte with value 2. I'm not
> transmitting "0-x-0-2" over the wire as 4 bytes, I'm just transmitting a
> string whose first character has ASCII value 0x02.
>
> I have also been coding for years (started with QB45 in the nineties,
> and before that with ZX-81 and ZXSpectrum in BASIC and even Assembler).
> I have coded several countries' Fiscal Printer interfaces for my company
> (all of them RS232C). But all this I did on Mr Gates' in-operating
> systems and IDEs.
>
> I do not know, though, the basics of RS232 I/O on Gambas3, methinks:
> I do not know -for example- what is wrong in my code that makes serial
> xxx_READ events not trigger.
> I also do not know how to write/read proper binary-as-string (or even
> bynary-as-byte[]) to/from RS232.
>
> My particular issue with the program:
> When the .InputBufferSize is not zero, it shows 3, which is correct (I'm
> expecting three bytes or chars, with values 0x02-0x15-0x03).
> Immediately afterwards, when I READ these bytes into a string (the only
> working thing so far), the first byte (0x02) is chopped off and the LEN
> of the resulting string is 2.
> I wonder: How come? There were three bytes in the buffer and I get a two
> byte string!
> I think Gambas is treating the 0x02 as a string-lenght indicator, and
> fills the string with the rest of the buffer, therefore fetching 2
> characters (this seems backed because the string gets the 0x15 and 0x03
> bytes as its contents). But I need all three bytes.
> My not-so-wild-guess (which agrees with your advise) is that I must use
> Byte[] and not String to read these blocks. Problem is twofold:
> 1- (BAD) Cannot get the _READ event to trigger
> 2- (WORSE) Cannot figure out how to make Gambas return a Byte[] with the
> buffer contents.
>
> Any pointers or working examples in those directions WILL help. Hope I
> explained myself better now.
>
> Regards,
> zxMarce.
>
> On 2016-06-30 11:34, nand...@nothingsimple.com wrote:
> > I've done extensive work with the serial port for a dozen years
> > with 100% success 24 hour operation.
> >
> > Sometimes people get mixed up with "0x02" thinking it's binary.
> > That is 4 characters ascii.
> > I prefer to use chr(2) to create a 1 length string binary 2.
> > If you're going to use byte[] array
> > then byte[0] = 2 is the equivalent.
> > Using escape (like HTML encoding) is the incorrect thinking
> > -Fernando
> >
> > --
> > Open WebMail Project (http://openwebmail.org)
> >
> >
> > -- Original Message ---
> > From: ML <d4t4f...@gmail.com>
> > To: gambas-user@lists.sourceforge.net
> > Sent: Thu, 30 Jun 2016 10:51:41 -0300
> > Subject: Re: [Gambas-user] Serial Port issues and events.
> >
> >> Alexie,
> >>
> >> Not really. This is my first attempt at a binary-exchange over serial in
> >> Gambas. Can't also find out the old G3 examples that might have existed
> >> about this and my web searches were unsuccessful.
> >> So, if you could point me to some example code to read a Byte[], I'll be
> >> grateful. My attempts to read to a Byte[] failed with SEGFAULT, or
> >> errors with no text.
> >>
> >> On the other hand, I just realized -again, happened to me in the past
> >> and I forgot it did- that the list does not send text inside RAW tags...
> >> The code can be seen only on Nabble's site, so I'm reinserting it here.
> >> Please excuse my notation; I know it's not Gambas standard. It's what I
> >> used for eons on QB45, VB3, VB4, VB5 VB6 and even .Net for my day to day
> >> work; (really) old habits die hard.
> >>
> >> Declarations:
> >>
> >>   Private Const TEST_TX As String = " ø1 " '0x02-0xF8-0x31-0x03 -
> >> Nabble's RAW TEXT tags removed some data from the string
> >>   Private Const TEST_RX As String = "   " '0x02-0x15-0x03 - Nabble's RAW
> >> TEXT tags removed some data from the string
> >>   Private m_tty As SerialPort
> >>   Private m_rxBuff As String = Null
> >>
> >> Instancing and setting the port up:
> >>
> >> 'Instance serial port and set properties
> >> m_tty = 

Re: [Gambas-user] Serial Port issues and events.

[ML]

Fernando,

I know what you mean. In my case I just wanted to show in the examples
which bytes come and go through the port.
I do know 0x02 ( for Gambas) is a single byte with value 2. I'm not
transmitting "0-x-0-2" over the wire as 4 bytes, I'm just transmitting a
string whose first character has ASCII value 0x02.

I have also been coding for years (started with QB45 in the nineties,
and before that with ZX-81 and ZXSpectrum in BASIC and even Assembler).
I have coded several countries' Fiscal Printer interfaces for my company
(all of them RS232C). But all this I did on Mr Gates' in-operating
systems and IDEs.

I do not know, though, the basics of RS232 I/O on Gambas3, methinks:
I do not know -for example- what is wrong in my code that makes serial
xxx_READ events not trigger.
I also do not know how to write/read proper binary-as-string (or even
bynary-as-byte[]) to/from RS232.

My particular issue with the program:
When the .InputBufferSize is not zero, it shows 3, which is correct (I'm
expecting three bytes or chars, with values 0x02-0x15-0x03).
Immediately afterwards, when I READ these bytes into a string (the only
working thing so far), the first byte (0x02) is chopped off and the LEN
of the resulting string is 2.
I wonder: How come? There were three bytes in the buffer and I get a two
byte string!
I think Gambas is treating the 0x02 as a string-lenght indicator, and
fills the string with the rest of the buffer, therefore fetching 2
characters (this seems backed because the string gets the 0x15 and 0x03
bytes as its contents). But I need all three bytes.
My not-so-wild-guess (which agrees with your advise) is that I must use
Byte[] and not String to read these blocks. Problem is twofold:
1- (BAD) Cannot get the _READ event to trigger
2- (WORSE) Cannot figure out how to make Gambas return a Byte[] with the
buffer contents.

Any pointers or working examples in those directions WILL help. Hope I
explained myself better now.

Regards,
zxMarce.

On 2016-06-30 11:34, nand...@nothingsimple.com wrote:
> I've done extensive work with the serial port for a dozen years
> with 100% success 24 hour operation.
>
> Sometimes people get mixed up with "0x02" thinking it's binary.
> That is 4 characters ascii.
> I prefer to use chr(2) to create a 1 length string binary 2.
> If you're going to use byte[] array
> then byte[0] = 2 is the equivalent.
> Using escape (like HTML encoding) is the incorrect thinking
> -Fernando
>
> --
> Open WebMail Project (http://openwebmail.org)
>
>
> -- Original Message ---
> From: ML <d4t4f...@gmail.com>
> To: gambas-user@lists.sourceforge.net
> Sent: Thu, 30 Jun 2016 10:51:41 -0300
> Subject: Re: [Gambas-user] Serial Port issues and events.
>
>> Alexie,
>>
>> Not really. This is my first attempt at a binary-exchange over serial in
>> Gambas. Can't also find out the old G3 examples that might have existed
>> about this and my web searches were unsuccessful.
>> So, if you could point me to some example code to read a Byte[], I'll be
>> grateful. My attempts to read to a Byte[] failed with SEGFAULT, or
>> errors with no text.
>>
>> On the other hand, I just realized -again, happened to me in the past
>> and I forgot it did- that the list does not send text inside RAW tags...
>> The code can be seen only on Nabble's site, so I'm reinserting it here.
>> Please excuse my notation; I know it's not Gambas standard. It's what I
>> used for eons on QB45, VB3, VB4, VB5 VB6 and even .Net for my day to day
>> work; (really) old habits die hard.
>>
>> Declarations:
>>
>>   Private Const TEST_TX As String = "ø1" '0x02-0xF8-0x31-0x03 -
>> Nabble's RAW TEXT tags removed some data from the string
>>   Private Const TEST_RX As String = "" '0x02-0x15-0x03 - Nabble's RAW
>> TEXT tags removed some data from the string
>>   Private m_tty As SerialPort
>>   Private m_rxBuff As String = Null
>>
>> Instancing and setting the port up:
>>
>> 'Instance serial port and set properties
>> m_tty = New SerialPort As "myTty"  'This should call myTty_Read()
>> when there is data to read from the port, but it does not seem to
>> trigger. Wonder why.
>> m_tty.PortName = "/dev/" & m_port
>> m_tty.Speed = m_speed
>> Select Case m_parity
>>   Case "No/Space"
>> m_tty.Parity = SerialPort.None
>>   Case "Even"
>> m_tty.Parity = SerialPort.Even
>>   Case "Odd"
>> m_tty.Parity = SerialPort.Odd
>> End Select
>> m_tty.DataBits = m_bits
>> m_tty.StopBits = m_stop
>>
>> 'Encoder use hardware handshake (RTS/CTS)
&g

Re: [Gambas-user] Serial Port issues and events.

[nando_f]

I've done extensive work with the serial port for a dozen years
with 100% success 24 hour operation.

Sometimes people get mixed up with "0x02" thinking it's binary.
That is 4 characters ascii.
I prefer to use chr(2) to create a 1 length string binary 2.
If you're going to use byte[] array
then byte[0] = 2 is the equivalent.
Using escape (like HTML encoding) is the incorrect thinking
-Fernando

--
Open WebMail Project (http://openwebmail.org)


-- Original Message ---
From: ML <d4t4f...@gmail.com>
To: gambas-user@lists.sourceforge.net
Sent: Thu, 30 Jun 2016 10:51:41 -0300
Subject: Re: [Gambas-user] Serial Port issues and events.

> Alexie,
> 
> Not really. This is my first attempt at a binary-exchange over serial in
> Gambas. Can't also find out the old G3 examples that might have existed
> about this and my web searches were unsuccessful.
> So, if you could point me to some example code to read a Byte[], I'll be
> grateful. My attempts to read to a Byte[] failed with SEGFAULT, or
> errors with no text.
> 
> On the other hand, I just realized -again, happened to me in the past
> and I forgot it did- that the list does not send text inside RAW tags...
> The code can be seen only on Nabble's site, so I'm reinserting it here.
> Please excuse my notation; I know it's not Gambas standard. It's what I
> used for eons on QB45, VB3, VB4, VB5 VB6 and even .Net for my day to day
> work; (really) old habits die hard.
> 
> Declarations:
> 
>   Private Const TEST_TX As String = "ø1" '0x02-0xF8-0x31-0x03 -
> Nabble's RAW TEXT tags removed some data from the string
>   Private Const TEST_RX As String = "" '0x02-0x15-0x03 - Nabble's RAW
> TEXT tags removed some data from the string
>   Private m_tty As SerialPort
>   Private m_rxBuff As String = Null
> 
> Instancing and setting the port up:
> 
> 'Instance serial port and set properties
> m_tty = New SerialPort As "myTty"  'This should call myTty_Read()
> when there is data to read from the port, but it does not seem to
> trigger. Wonder why.
> m_tty.PortName = "/dev/" & m_port
> m_tty.Speed = m_speed
> Select Case m_parity
>   Case "No/Space"
> m_tty.Parity = SerialPort.None
>   Case "Even"
> m_tty.Parity = SerialPort.Even
>   Case "Odd"
> m_tty.Parity = SerialPort.Odd
> End Select
> m_tty.DataBits = m_bits
> m_tty.StopBits = m_stop
> 
> 'Encoder use hardware handshake (RTS/CTS)
> m_tty.FlowControl = SerialPort.Hardware
> 
> 'Try opening the port
> m_tty.Open()
> m_tty.Blocking = False
> m_tty.DTR = True
> 
> Then, I send TEST_TX and expect for either TEST_RX or a timeout:
> 
>   Public Function Test() As Boolean
> 
> Dim tOut As Date = DateAdd(Now, gb.Second, 2)
> 
> 'Reset RX Buffer, send test command and check for timeout/response
> m_tty.Drop  'Kill remaining send data
> m_tty.Begin()   'Start buffering
> Write #m_tty, TEST_TX   'Add to send buffer
> m_rxBuff = Null 'Kill RX buffer
> m_tty.Send()'Send buffer
> 
> While (Now < tOut) And (m_rxBuff <> TEST_RX)
>   Sleep 0.1
>   'This IF below should not be needed, but myTty_Read() never fires
> otherwise!
>   If m_tty.InputBufferSize > 0 Then
> myTty_Read()
>   Endif
> Wend
> 
> Finally
>   Return (m_rxBuff = TEST_RX)
> 
> Catch
>   Message.Error("Error '" & Error.Text & "' occurred in " & Error.Where)
> 
>   End
> 
> Finally, this next is the problem code. It does not fire as expected
> when data arrives, and when I call it by hand in the IF above, if I try
> to READ #m_tty As String it chops off the leading 0x02 byte, and I could
> not figure out how to READ #m_tty As Byte[] or As Object (I get a null
> error; nothing on the message.error text, and no OK button on it either):
> 
>   Public Sub myTty_Read()
> 
> Dim dLen As Integer = m_tty.InputBufferSize
> Dim sgmnt As Byte[] 'String = Null  'This here is my desperate
> attempt to read As String or As Object...
> 
> 'Data should be available in the serial port buffer
> 'sgmnt = Read #m_tty As String
> 'm_rxBuff &= sgmnt
> sgmnt = Read #m_tty As Object
> m_rxBuff &= sgmnt.ToString
> Debug "Rx: (" & CStr(dLen) & ") " & sgmnt
> 
> Catch
>   'This is triggered when reading As Object or As Byte[]. But the
> text is NULL and has no OK button!
>   Message.Error("Error '" & Error.Text & "' occurred in &q

Re: [Gambas-user] Serial Port issues and events.

[ML]

Alexie,

Not really. This is my first attempt at a binary-exchange over serial in
Gambas. Can't also find out the old G3 examples that might have existed
about this and my web searches were unsuccessful.
So, if you could point me to some example code to read a Byte[], I'll be
grateful. My attempts to read to a Byte[] failed with SEGFAULT, or
errors with no text.

On the other hand, I just realized -again, happened to me in the past
and I forgot it did- that the list does not send text inside RAW tags...
The code can be seen only on Nabble's site, so I'm reinserting it here.
Please excuse my notation; I know it's not Gambas standard. It's what I
used for eons on QB45, VB3, VB4, VB5 VB6 and even .Net for my day to day
work; (really) old habits die hard.

Declarations:

  Private Const TEST_TX As String = "ø1" '0x02-0xF8-0x31-0x03 -
Nabble's RAW TEXT tags removed some data from the string
  Private Const TEST_RX As String = "" '0x02-0x15-0x03 - Nabble's RAW
TEXT tags removed some data from the string
  Private m_tty As SerialPort
  Private m_rxBuff As String = Null

Instancing and setting the port up:

'Instance serial port and set properties
m_tty = New SerialPort As "myTty"  'This should call myTty_Read()
when there is data to read from the port, but it does not seem to
trigger. Wonder why.
m_tty.PortName = "/dev/" & m_port
m_tty.Speed = m_speed
Select Case m_parity
  Case "No/Space"
m_tty.Parity = SerialPort.None
  Case "Even"
m_tty.Parity = SerialPort.Even
  Case "Odd"
m_tty.Parity = SerialPort.Odd
End Select
m_tty.DataBits = m_bits
m_tty.StopBits = m_stop

'Encoder use hardware handshake (RTS/CTS)
m_tty.FlowControl = SerialPort.Hardware

'Try opening the port
m_tty.Open()
m_tty.Blocking = False
m_tty.DTR = True

Then, I send TEST_TX and expect for either TEST_RX or a timeout:

  Public Function Test() As Boolean

Dim tOut As Date = DateAdd(Now, gb.Second, 2)

'Reset RX Buffer, send test command and check for timeout/response
m_tty.Drop  'Kill remaining send data
m_tty.Begin()   'Start buffering
Write #m_tty, TEST_TX   'Add to send buffer
m_rxBuff = Null 'Kill RX buffer
m_tty.Send()'Send buffer

While (Now < tOut) And (m_rxBuff <> TEST_RX)
  Sleep 0.1
  'This IF below should not be needed, but myTty_Read() never fires
otherwise!
  If m_tty.InputBufferSize > 0 Then
myTty_Read()
  Endif
Wend

Finally
  Return (m_rxBuff = TEST_RX)

Catch
  Message.Error("Error '" & Error.Text & "' occurred in " & Error.Where)

  End

Finally, this next is the problem code. It does not fire as expected
when data arrives, and when I call it by hand in the IF above, if I try
to READ #m_tty As String it chops off the leading 0x02 byte, and I could
not figure out how to READ #m_tty As Byte[] or As Object (I get a null
error; nothing on the message.error text, and no OK button on it either):

  Public Sub myTty_Read()

Dim dLen As Integer = m_tty.InputBufferSize
Dim sgmnt As Byte[] 'String = Null  'This here is my desperate
attempt to read As String or As Object...

'Data should be available in the serial port buffer
'sgmnt = Read #m_tty As String
'm_rxBuff &= sgmnt
sgmnt = Read #m_tty As Object
m_rxBuff &= sgmnt.ToString
Debug "Rx: (" & CStr(dLen) & ") " & sgmnt

Catch
  'This is triggered when reading As Object or As Byte[]. But the
text is NULL and has no OK button!
  Message.Error("Error '" & Error.Text & "' occurred in " & Error.Where)

  End

A breakpoint in the "sgmnt = Read #m_tty As ..." line show that the
value of "dLen" is three, which is OK. But when I try to READ As String,
the leading 0x02 is missing from the string, leaving only 0x15-0x03
(quick tooltip shows the string to be "\x15\x03"). When this is later
compared to TEST_RX in Test(), the comparison obviously fails.

TIA,
zxMarce.


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Re: [Gambas-user] Serial Port issues and events.

[Alexie]

Do you have a better/working example? Using multiple serialport works fine
in Gambas (we use it in DomotiGa). You can read byte for byte, or read it
into an array (latter one i recommend). Then you just loop through the
array until you find STX/ETX characters ;-)

2016-06-30 12:17 GMT+02:00 zxMarce :

> Hi there. Using Gambas 3.8.4 from PPA on Ubuntu 14.04 x64.
>
> I'm having issues with serial ports. I have a USB to 4 RS232C hub adapter.
> It is working on a virtual Windows machine, reading and writing as it is
> supposed to do. The connected device (using one port only) is a Magnetic
> Card Encoder that uses binary data (i.e: not always printable ASCII) to be
> told what to do. Using the mobo's built-in RS232 port as well as a PCIe
> 4xRS232 card yield the same results, so the ports do not seem to be at
> fault
> here.
>
> My program tries to guess if the encoder is present at the specified port
> by
> sending the byte sequence 0x02-0xF8-0x31-0x03, which is an invalid command
> for the device. The device should respond with 0x02-0x15-0x03.
>
> All data comm blocks are surrounded by STX (0x02) and ETX (0x03) bytes.
>
> The problems I am having are two:
>
> 1- I can't have Gambas trigger the READ event for the port, thus I call it
> by hand.
> 2- I can't figure out how to get the data from the encoder into a string
> without missing bytes.
>
> My code is encapsulated in a class. Declarations:
>
>
>
> Instancing and setting the port up:
>
>
>
> Then, I send TEST_TX and expect for either TEST_RX or a timeout:
>
>
>
> Finally, this next is the problem code. It does not fire as expected when
> data arrives, and when I call it by hand in the IF above, if I try to READ
> #m_tty As String it chops off the leading 0x02 byte, and I could not figure
> out how to READ #m_tty As Byte[] or As Object (I get a null error; nothing
> on the message.error text, and no OK button on it either):
>
>
>
> A breakpoint in the "sgmnt = Read #m_tty As Object" line show that the
> value
> of "dLen" is three, which is OK. But when I try to READ As String, the
> leading 0x02 is missing from the string, leaving only 0x15-0x03. When this
> is later compared to TEST_RX in Test(), the comparison obviously fails.
>
> Hope someone can help me out. I guess my heavy VB6 background is
> interfering
> but can't really see how.
>
> TIA,
> zxMarce.
>
>
>
> --
> View this message in context:
> http://gambas.8142.n7.nabble.com/Serial-Port-issues-and-events-tp56614.html
> Sent from the gambas-user mailing list archive at Nabble.com.
>
>
> --
> Attend Shape: An AT Tech Expo July 15-16. Meet us at AT Park in San
> Francisco, CA to explore cutting-edge tech and listen to tech luminaries
> present their vision of the future. This family event has something for
> everyone, including kids. Get more information and register today.
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>
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[Gambas-user] Serial Port issues and events.

[zxMarce]

Hi there. Using Gambas 3.8.4 from PPA on Ubuntu 14.04 x64.

I'm having issues with serial ports. I have a USB to 4 RS232C hub adapter.
It is working on a virtual Windows machine, reading and writing as it is
supposed to do. The connected device (using one port only) is a Magnetic
Card Encoder that uses binary data (i.e: not always printable ASCII) to be
told what to do. Using the mobo's built-in RS232 port as well as a PCIe
4xRS232 card yield the same results, so the ports do not seem to be at fault
here.

My program tries to guess if the encoder is present at the specified port by
sending the byte sequence 0x02-0xF8-0x31-0x03, which is an invalid command
for the device. The device should respond with 0x02-0x15-0x03.

All data comm blocks are surrounded by STX (0x02) and ETX (0x03) bytes.

The problems I am having are two:

1- I can't have Gambas trigger the READ event for the port, thus I call it
by hand.
2- I can't figure out how to get the data from the encoder into a string
without missing bytes.

My code is encapsulated in a class. Declarations:



Instancing and setting the port up:



Then, I send TEST_TX and expect for either TEST_RX or a timeout:



Finally, this next is the problem code. It does not fire as expected when
data arrives, and when I call it by hand in the IF above, if I try to READ
#m_tty As String it chops off the leading 0x02 byte, and I could not figure
out how to READ #m_tty As Byte[] or As Object (I get a null error; nothing
on the message.error text, and no OK button on it either):



A breakpoint in the "sgmnt = Read #m_tty As Object" line show that the value
of "dLen" is three, which is OK. But when I try to READ As String, the
leading 0x02 is missing from the string, leaving only 0x15-0x03. When this
is later compared to TEST_RX in Test(), the comparison obviously fails.

Hope someone can help me out. I guess my heavy VB6 background is interfering
but can't really see how.

TIA,
zxMarce.



--
View this message in context: 
http://gambas.8142.n7.nabble.com/Serial-Port-issues-and-events-tp56614.html
Sent from the gambas-user mailing list archive at Nabble.com.

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Re: [Gambas-user] Serial port control

[nando]

I have used the serial port for 5+ years with Accelerometer and GPS
without fault nor failure on the serial port control.
Some use RTS/CTS, some done.
My suggestion is not to think it needs to mimick what MSComm does
and how you have used MSComm in the past.
Learn what it does and how you can use it for your devices.
I assure you it can certainly do it without fail.
-Nando


-- Original Message ---
From: Randall Morgan rmorga...@gmail.com
To: mailing list for gambas users gambas-user@lists.sourceforge.net
Sent: Sun, 22 Dec 2013 23:35:33 -0800
Subject: Re: [Gambas-user] Serial port control

 I think the RTheshold of VB simply sets the byte count that must accumulate
 in the receive buffer before a comm event is triggered. It doesn't do
 anything else. In the background VB is still polling the buffer and looking
 at the byte count. You can do this in GB but you will have to write it
 yourself. You would need to simply use the read event on the comm object to
 test the byte count. I believe it triggers at 1 byte. Then use that to
 trigger your own custom event when your 124 bytes have arrived.
 
 You might also be able to talk Benoit into adding an RThreshold property.
 Seems like it might be handy At the very least 4Hz is very very slow
 for most computers. And setting up a 4Hz polling of the port wouldn't be
 hard at all.
 
 On Sun, Dec 22, 2013 at 8:10 PM, Carl Nilsson nils...@iinet.net.au wrote:
 
  Thanks Randall.  I guess it's time to try it and play around a
  little, which I can't do for a few days.  At the moment I'm trying to
  look ahead and see where problems might lie.  When push comes to
  shove, I don't know how these things really work!  I follow
  recipes!  Don't really want to close the port as the data come in
  continuously as fast as the device can send them and I don't want to
  miss any.  (It's attitude sensor data from an inertial management
  unit in a light aircraft).  Same in principle with another
  continuous stream of binary GPS data with packets of 124 bytes
  coming in at a slower rate of, say, 4 Hz.  How continuous it is
  would depend on the baud rate at which the port is operating.  The
  RThreashold property of MScomm handles this issue very well. Doesn't
  trigger an event until the specified number of bytes is in the serial
  buffer.
  Carl
 
  At 02:47 PM 23/12/2013, you wrote:
  It has been a long while since I have used the serial component of GB but
  I
  have a project starting in which I will need to re-acquaint myself with
  it.
  The stream can be setup as blocking or non-blocking. The PC uses either
  polling or interrupt when the port is opened. So trying to manage the
  serial port at the same level you would in on uC is pointless in most
  cases. Just set up the stream and read the bytes you need from there. If
  you're concerned about buffer overflow then you may want to close the port
  once you have read the bytes you need.
  
  Perhaps someone with more recent experience can help you more.
  
  
  
  
  On Sun, Dec 22, 2013 at 7:15 PM, Carl Nilsson nils...@iinet.net.au
  wrote:
  
Randall: Thanks for responding.  OK, I have looked at the stream
functions:  My question was, basically, how do I specify how many
bytes I want to take in from a given serial port at each
instance?  For example, on one input I expect a continuous stream of
31 byte packets and I want to take them in for processing 25 (say)
packets at a time, i.e. 775 bytes at a time.  Now I don't much mind
if I get a few bytes more or less because I can check for a remainder
part-packet and put it on the front of the next nominal 775 byte
intake - that's part of the processing software - but I don't want
the CPU tied up with that port or stream between intakes of (about)
775 bytes.  There are other input streams and data processing to
attend to.  I don't see how to do that with the stream functions -
but maybe I'm not understanding how the stream works?  I can see that
I could (I think!) read a given number of bytes from a stream, but
does that relieve the CPU from being tied up with that stream until I
read another 775 bytes?  Is a stream of indefinite length or does it
have some buffer limit?
Carl
   
At 01:09 PM 23/12/2013, you wrote:
As I recall gb serial is steam based and so you would handle buffers
  via
the stream not the serial object.


On Sun, Dec 22, 2013 at 3:01 PM, Carl Nilsson nils...@iinet.net.au
wrote:

  G'day all:
  Now with Gambas 3 installed, I want to get on with porting my
  running
  software from VB6/Windows.  It requires processing multiple streams
  of binary serial data from attached devices.  The serial control in
  gambas 3 does not seem up to the job, in so far as the available
  properties lack the elements I use under VB MScomm.  ...(snip)
   
   
  Carl
 
  Carl S Nilsson
  137 Gordons Hill Road

Re: [Gambas-user] Serial port control

[nando]

My suggestion to reading 124 bytes from a serial stream

I use this technique mostly because I want to empty the buffer provided by the 
control
as much as possible.

I would have one function which is the _read of the serial port.
The only thing it does is accumulate bytes in an array.

I have another function which will ask for 124 bytes from the accumlating array.
If there are not enough, it can block, or return an array of zero long
which would mean not enough came in.
In this case you could also do a small time delay (ie. WAIT 0.1) 
just to prevent the CPU from running 100% testing for 124 bytes.


Both of these can be a Gambas Class and the second function is the public 
function.
You can use _new to instantiate the serial port control.
You don't need to create it at design time.

I used techniques like this and it works like a charm.
-Nando


-- Original Message ---
From: Randall Morgan rmorga...@gmail.com
To: mailing list for gambas users gambas-user@lists.sourceforge.net
Sent: Sun, 22 Dec 2013 23:35:33 -0800
Subject: Re: [Gambas-user] Serial port control

 I think the RTheshold of VB simply sets the byte count that must accumulate
 in the receive buffer before a comm event is triggered. It doesn't do
 anything else. In the background VB is still polling the buffer and looking
 at the byte count. You can do this in GB but you will have to write it
 yourself. You would need to simply use the read event on the comm object to
 test the byte count. I believe it triggers at 1 byte. Then use that to
 trigger your own custom event when your 124 bytes have arrived.
 
 You might also be able to talk Benoit into adding an RThreshold property.
 Seems like it might be handy At the very least 4Hz is very very slow
 for most computers. And setting up a 4Hz polling of the port wouldn't be
 hard at all.
 
 On Sun, Dec 22, 2013 at 8:10 PM, Carl Nilsson nils...@iinet.net.au wrote:
 
  Thanks Randall.  I guess it's time to try it and play around a
  little, which I can't do for a few days.  At the moment I'm trying to
  look ahead and see where problems might lie.  When push comes to
  shove, I don't know how these things really work!  I follow
  recipes!  Don't really want to close the port as the data come in
  continuously as fast as the device can send them and I don't want to
  miss any.  (It's attitude sensor data from an inertial management
  unit in a light aircraft).  Same in principle with another
  continuous stream of binary GPS data with packets of 124 bytes
  coming in at a slower rate of, say, 4 Hz.  How continuous it is
  would depend on the baud rate at which the port is operating.  The
  RThreashold property of MScomm handles this issue very well. Doesn't
  trigger an event until the specified number of bytes is in the serial
  buffer.
  Carl
 
  At 02:47 PM 23/12/2013, you wrote:
  It has been a long while since I have used the serial component of GB but
  I
  have a project starting in which I will need to re-acquaint myself with
  it.
  The stream can be setup as blocking or non-blocking. The PC uses either
  polling or interrupt when the port is opened. So trying to manage the
  serial port at the same level you would in on uC is pointless in most
  cases. Just set up the stream and read the bytes you need from there. If
  you're concerned about buffer overflow then you may want to close the port
  once you have read the bytes you need.
  
  Perhaps someone with more recent experience can help you more.
  
  
  
  
  On Sun, Dec 22, 2013 at 7:15 PM, Carl Nilsson nils...@iinet.net.au
  wrote:
  
Randall: Thanks for responding.  OK, I have looked at the stream
functions:  My question was, basically, how do I specify how many
bytes I want to take in from a given serial port at each
instance?  For example, on one input I expect a continuous stream of
31 byte packets and I want to take them in for processing 25 (say)
packets at a time, i.e. 775 bytes at a time.  Now I don't much mind
if I get a few bytes more or less because I can check for a remainder
part-packet and put it on the front of the next nominal 775 byte
intake - that's part of the processing software - but I don't want
the CPU tied up with that port or stream between intakes of (about)
775 bytes.  There are other input streams and data processing to
attend to.  I don't see how to do that with the stream functions -
but maybe I'm not understanding how the stream works?  I can see that
I could (I think!) read a given number of bytes from a stream, but
does that relieve the CPU from being tied up with that stream until I
read another 775 bytes?  Is a stream of indefinite length or does it
have some buffer limit?
Carl
   
At 01:09 PM 23/12/2013, you wrote:
As I recall gb serial is steam based and so you would handle buffers
  via
the stream not the serial object.


On Sun, Dec 22, 2013 at 3:01 PM, Carl Nilsson nils

Re: [Gambas-user] Serial port control

[Mike Crean]

Carl, will you be using the PC end and gambas code as the master or slave, if 
master then just use the sport read interupt function.
Remember you will have to use chr and asc if using binary data streems. The 
Gambas3 serial example is very good. If any data is in the input buffer it will 
trigger the Sport_Read sub and exit leeving the system free to carry on. Just 
use the PC as master to request data from the slave of slaves.

Private Sport As SerialPort
Const None As Integer = 0
Private RxLen As Integer
Private Rx As String

Public Sub Form_Open()
  Sport = New SerialPort As Sport
  Sport.PortName = /dev/ttyACM0    'Setup for Arduino you may have to change 
to ttyUSB0
  Sport.Speed = 57600
  Sport.Parity = 0
  Sport.DataBits = 8 
  Sport.StopBits = 1
  Sport.FlowControl = 0
  Sport.Open()
End

Public Sub Sport_Read()
  
  Try Read #Sport, Rx, Lof(Sport)
  
    If Error Then 
  Goto NoRx
    Endif
    
    RxLen = InStr(Rx, Chr(13))
    LabelRxlen.Text = RxLen
    ListBox1.Add(Rx)
  
NoRx:

  Rx = 

End

Best Regards 
Mike

Very Merry Christmas to all





On Monday, 23 December 2013 5:03 PM, nando nand...@nothingsimple.com wrote:
 
My suggestion to reading 124 bytes from a serial stream

I use this technique mostly because I want to empty the buffer provided by the 
control
as much as possible.

I would have one function which is the _read of the serial port.
The only thing it does is accumulate bytes in an array.

I have another function which will ask for 124 bytes from the accumlating array.
If there are not enough, it can block, or return an array of zero long
which would mean not enough came in.
In this case you could also do a small time delay (ie. WAIT 0.1) 
just to prevent the CPU from running 100% testing for 124 bytes.


Both of these can be a Gambas Class and the second function is the public 
function.
You can use _new to instantiate the serial port control.
You don't need to create it at design time.

I used techniques like this and it works like a charm.
-Nando


-- Original Message ---
From: Randall Morgan rmorga...@gmail.com
To: mailing list for gambas users gambas-user@lists.sourceforge.net
Sent: Sun, 22 Dec 2013 23:35:33 -0800
Subject: Re: [Gambas-user] Serial port control

 I think the RTheshold of VB simply sets the byte count that must accumulate
 in the receive buffer before a comm event is triggered. It doesn't do
 anything else. In the background VB is still polling the buffer and looking
 at the byte count. You can do this in GB but you will have to write it
 yourself. You would need to simply use the read event on the comm object to
 test the byte count. I believe it triggers at 1 byte. Then use that to
 trigger your own custom event when your 124 bytes have arrived.
 
 You might also be able to talk Benoit into adding an RThreshold property.
 Seems like it might be handy At the very least 4Hz is very very slow
 for most computers. And setting up a 4Hz polling of the port wouldn't be
 hard at all.
 
 On Sun, Dec 22, 2013 at 8:10 PM, Carl Nilsson nils...@iinet.net.au wrote:
 
  Thanks Randall.  I guess it's time to try it and play around a
  little, which I can't do for a few days.  At the moment I'm trying to
  look ahead and see where problems might lie.  When push comes to
  shove, I don't know how these things really work!  I follow
  recipes!  Don't really want to close the port as the data come in
  continuously as fast as the device can send them and I don't want to
  miss any.  (It's attitude sensor data from an inertial management
  unit in a light aircraft).  Same in principle with another
  continuous stream of binary GPS data with packets of 124 bytes
  coming in at a slower rate of, say, 4 Hz.  How continuous it is
  would depend on the baud rate at which the port is operating.  The
  RThreashold property of MScomm handles this issue very well. Doesn't
  trigger an event until the specified number of bytes is in the serial
  buffer.
  Carl
 
  At 02:47 PM 23/12/2013, you wrote:
  It has been a long while since I have used the serial component of GB but
  I
  have a project starting in which I will need to re-acquaint myself with
  it.
  The stream can be setup as blocking or non-blocking. The PC uses either
  polling or interrupt when the port is opened. So trying to manage the
  serial port at the same level you would in on uC is pointless in most
  cases. Just set up the stream and read the bytes you need from there. If
  you're concerned about buffer overflow then you may want to close the port
  once you have read the bytes you need.
  
  Perhaps someone with more recent experience can help you more.
  
  
  
  
  On Sun, Dec 22, 2013 at 7:15 PM, Carl Nilsson nils...@iinet.net.au
  wrote:
  
Randall: Thanks for responding.  OK, I have looked at the stream
functions:  My question was, basically, how do I specify how many
bytes I want to take in from a given serial port at each
instance?  For example, on one input I

Re: [Gambas-user] Serial port control

[Carl Nilsson]

G'day Guys (Nando, Randall and Mike):
Thanks for your helpful replies.  It's 5 am here and I woke up an 
hour ago with this matter running through my head, so your replies 
are welcome!  All good advice.  I realized that, first of all, I 
needed to get a handle on using the stream functions, which are quite 
new to me.  Secondly, as usual, there are many ways to skin a 
cat.  You are right, I need not be dependent on an RThreshold 
property.  I have been using this for years most successfully with 
MScomm in VB6.  It does exert efficient control, but sometimes my 
incoming packets vary in byte count..  So, early in the piece, I 
wrote code that would look for any remainder bytes or shortfall on 
the end of the designated input stream and put them onto the start of 
the next byte block to get back into synch.  The Windows kernel has a 
very efficient function called MoveMemory that can be called from 
VB6.  (I presume Linux has something similar).  It's very much faster 
than shifting bytes in Do loops.

Anyway, not being dependent on an totally accurate byte count prior 
to triggering an event suggested an alternate approach:  My principal 
data device is a decade-old  Microstrain Inertial Management Unit 
(IMU).that sends remorselessly at around 2356 bytes (sometimes plus a 
packet or two) per sec.  At the moment I'm doing all my processing on 
an old Advantech 9576F single board computer running Win 2K.  With 
about 8 serial ports in action and heaps of other processing to do, I 
wanted to ease things with some preprocessing of some data streams on 
one of these little new ARM boards like the Raspberry Pi or 
Beaglebone Black - the latter with at least 4 UARTS and running at 1 
GHz seems very attractive. They can run fully embedded under Linux 
with gambas for initial data processing.   I have an RPi now with 
gambas3 and wiring Pi installed to experiment with. Sometimes the IMU 
traffic is duplex when I change parameters in flight and additional 
data packets come back in addition to the normal data flow.  So I 
adjust the RThreshold value dynamically, but that's not vital.  All 
this adds up to the fact that another approach might be to trigger 
processing events simply with a timer - read the full stream each 
time and get the byte count approximately right.  With a MoveMemory 
function I can easily handle some unevenness in byte count.  As I 
said, I'm looking for the least drain on CPU load.   I don't really 
need the system tied up waiting and testing for an exact count.

Anyway, I thank you for all your comments.  I now know that what I 
need can be done and the next step is for me to 
experiment.  Yesterday I was having some doubts about choosing 
gambas.  Nice to talk with you guys.  I'll get back to you when I 
have something more useful to say or ask.
Merry Christmas, Carl

At 08:03 PM 23/12/2013, you wrote:
My suggestion to reading 124 bytes from a serial stream

I use this technique mostly because I want to empty the buffer 
provided by the control
as much as possible.

I would have one function which is the _read of the serial port.
The only thing it does is accumulate bytes in an array.

I have another function which will ask for 124 bytes from the 
accumlating array.
If there are not enough, it can block, or return an array of zero long
which would mean not enough came in.
In this case you could also do a small time delay (ie. WAIT 0.1)
just to prevent the CPU from running 100% testing for 124 bytes.


Both of these can be a Gambas Class and the second function is the 
public function.
You can use _new to instantiate the serial port control.
You don't need to create it at design time.

I used techniques like this and it works like a charm.
-Nando


-- Original Message ---
From: Randall Morgan rmorga...@gmail.com
To: mailing list for gambas users gambas-user@lists.sourceforge.net
Sent: Sun, 22 Dec 2013 23:35:33 -0800
Subject: Re: [Gambas-user] Serial port control

  I think the RTheshold of VB simply sets the byte count that must accumulate
  in the receive buffer before a comm event is triggered. It doesn't do
  anything else. In the background VB is still polling the buffer and looking
  at the byte count. You can do this in GB but you will have to write it
  yourself. You would need to simply use the read event on the comm object to
  test the byte count. I believe it triggers at 1 byte. Then use that to
  trigger your own custom event when your 124 bytes have arrived.
 
  You might also be able to talk Benoit into adding an RThreshold property.
  Seems like it might be handy At the very least 4Hz is very very slow
  for most computers. And setting up a 4Hz polling of the port wouldn't be
  hard at all.
 
  On Sun, Dec 22, 2013 at 8:10 PM, Carl Nilsson nils...@iinet.net.au wrote:
 
   Thanks Randall.  I guess it's time to try it and play around a
   little, which I can't do for a few days.  At the moment I'm trying to
   look ahead and see where problems might

Re: [Gambas-user] Serial port control

[Carl Nilsson]

 to commercial solutions.
  I would say I have had best results using an interrupt driven serial
routine to empty the uart buffers and handle the data. VB6 using
OnComm() function and Gambas using Sport_Read() function. Variable
buffer sizes can be dealt with by checking the length of the input
string using CR as the end of line indicator (chr13) as used in most
protocols (modbus ASCII  RTU).

  Try something like, Try Print #Sport, Tx; Chr$(13) in a timer
function or from terminal input to send data through the uart.

If needed I have the Gambas modbus test
program and a Koyo Click PLC (under $100 au PLC software is free) to 
test and see if the
code is still OK, the modbus protocol uses binary data over the comms
link.

Hope this is of some help.

Best
Regards
Mike
Merry Christmas to all.







On Tuesday, 24 December 2013 2:38 AM, Carl Nilsson 
nils...@iinet.net.au wrote:

G'day Guys (Nando, Randall and Mike):
Thanks for your helpful replies.  It's 5 am here and I woke up an
hour ago with this matter running through my head, so your replies
are welcome!  All good advice.  I realized that, first of all, I
needed to get a handle on using the stream functions, which are quite
new to me.  Secondly, as usual, there are many ways to skin a
cat.  You are right, I need not be dependent on an RThreshold
property.  I have been using this for years most successfully with
MScomm in VB6.  It does exert efficient control, but sometimes my
incoming packets vary in byte count..  So, early in the piece, I
wrote code that would look for any remainder bytes or shortfall on
the end of the designated input stream and put them onto the start of
the next byte block to get back into synch.  The Windows kernel has a
very efficient function called MoveMemory that can be called from
VB6.  (I presume Linux has something similar).  It's very much faster
than shifting bytes in Do loops.

Anyway, not being dependent on an totally accurate byte count prior
to triggering an event suggested an alternate approach:  My principal
data device is a decade-old  Microstrain Inertial Management Unit
(IMU).that sends remorselessly at around 2356 bytes (sometimes plus a
packet or two) per sec.  At the moment I'm doing all my processing on
an old Advantech 9576F single board computer running Win 2K.  With
about 8 serial ports in action and heaps of other processing to do, I
wanted to ease things with some preprocessing of some data streams on
one of these little new ARM boards like the Raspberry Pi or
Beaglebone Black - the latter with at least 4 UARTS and running at 1
GHz seems very attractive. They can run fully embedded under Linux
with gambas for initial data processing.   I have an RPi now with
gambas3 and wiring Pi installed to experiment with. Sometimes the IMU
traffic is duplex when I change parameters in flight and additional
data packets come back in addition to the normal data flow.  So I
adjust the RThreshold value dynamically, but that's not vital.  All
this adds up to the fact that another approach might be to trigger
processing events simply with a timer - read the full stream each
time and get the byte count approximately right.  With a MoveMemory
function I can easily handle some unevenness in byte count.  As I
said, I'm looking for the least drain on CPU load.   I don't really
need the system tied up waiting and testing for an exact count.

Anyway, I thank you for all your comments.  I now know that what I
need can be done and the next step is for me to
experiment.  Yesterday I was having some doubts about choosing
gambas.  Nice to talk with you guys.  I'll get back to you when I
have something more useful to say or ask.
Merry Christmas, Carl


At 08:03 PM 23/12/2013, you wrote:
 My suggestion to reading 124 bytes from a serial stream
 
 I use this technique mostly because I want to empty the buffer
 provided by the control
 as much as possible.
 
 I would have one function which is the _read of the serial port.
 The only thing it does is accumulate bytes in an array.
 
 I have another function which will ask for 124 bytes from the
 accumlating array.
 If there are not enough, it can block, or return an array of zero long
 which would mean not enough came in.
 In this case you could also do a small time delay (ie. WAIT 0.1)
 just to prevent the CPU from running 100% testing for 124 bytes.
 
 
 Both of these can be a Gambas Class and the second function is the
 public function.
 You can use _new to instantiate the serial port control.
 You don't need to create it at design time.
 
 I used techniques like this and it works like a charm.
 -Nando
 
 
 -- Original Message ---
 From: Randall Morgan rmorga...@gmail.com
 To: mailing list for gambas users gambas-user@lists.sourceforge.net
 Sent: Sun, 22 Dec 2013 23:35:33 -0800
 Subject: Re: [Gambas-user] Serial port control
 
   I think the RTheshold of VB simply sets the byte count that 
 must accumulate
   in the receive buffer before a comm event is triggered. It doesn't

[Gambas-user] Serial port control

[Carl Nilsson]

G'day all:
Now with Gambas 3 installed, I want to get on with porting my running 
software from VB6/Windows.  It requires processing multiple streams 
of binary serial data from attached devices.  The serial control in 
gambas 3 does not seem up to the job, in so far as the available 
properties lack the elements I use under VB MScomm.  In addition to 
the basic ones, these are inbuffer.size, outbuffer.size, 
inbuffer.count, inputMode, input Len(gth), PortOpen and, in 
particular, R Threshold and S Threshold.  The latter R/S Thresholds 
are very useful in allowing the software to get on with other 
processing while the buffers are filling - at least that is my understanding.
I ask if whoever wrote the gambas serial control has any plans to 
expand it's functionality to the MScomm level in the foreseeable 
future or can someone point me to another more comprehensive control 
I could use with gambas?
Carl

Carl S Nilsson
137 Gordons Hill Road
Lindisfarne, Tas.
Australia 7015 


--
Rapidly troubleshoot problems before they affect your business. Most IT 
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Re: [Gambas-user] Serial port control

[Randall Morgan]

As I recall gb serial is steam based and so you would handle buffers via
the stream not the serial object.


On Sun, Dec 22, 2013 at 3:01 PM, Carl Nilsson nils...@iinet.net.au wrote:

 G'day all:
 Now with Gambas 3 installed, I want to get on with porting my running
 software from VB6/Windows.  It requires processing multiple streams
 of binary serial data from attached devices.  The serial control in
 gambas 3 does not seem up to the job, in so far as the available
 properties lack the elements I use under VB MScomm.  In addition to
 the basic ones, these are inbuffer.size, outbuffer.size,
 inbuffer.count, inputMode, input Len(gth), PortOpen and, in
 particular, R Threshold and S Threshold.  The latter R/S Thresholds
 are very useful in allowing the software to get on with other
 processing while the buffers are filling - at least that is my
 understanding.
 I ask if whoever wrote the gambas serial control has any plans to
 expand it's functionality to the MScomm level in the foreseeable
 future or can someone point me to another more comprehensive control
 I could use with gambas?
 Carl

 Carl S Nilsson
 137 Gordons Hill Road
 Lindisfarne, Tas.
 Australia 7015



 --
 Rapidly troubleshoot problems before they affect your business. Most IT
 organizations don't have a clear picture of how application performance
 affects their revenue. With AppDynamics, you get 100% visibility into your
 Java,.NET,  PHP application. Start your 15-day FREE TRIAL of AppDynamics
 Pro!
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The correct questions however are... What will it cost, and how long will
it take?
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affects their revenue. With AppDynamics, you get 100% visibility into your 
Java,.NET,  PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro!
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Re: [Gambas-user] Serial port control

[Carl Nilsson]

Randall: Thanks for responding.  OK, I have looked at the stream 
functions:  My question was, basically, how do I specify how many 
bytes I want to take in from a given serial port at each 
instance?  For example, on one input I expect a continuous stream of 
31 byte packets and I want to take them in for processing 25 (say) 
packets at a time, i.e. 775 bytes at a time.  Now I don't much mind 
if I get a few bytes more or less because I can check for a remainder 
part-packet and put it on the front of the next nominal 775 byte 
intake - that's part of the processing software - but I don't want 
the CPU tied up with that port or stream between intakes of (about) 
775 bytes.  There are other input streams and data processing to 
attend to.  I don't see how to do that with the stream functions - 
but maybe I'm not understanding how the stream works?  I can see that 
I could (I think!) read a given number of bytes from a stream, but 
does that relieve the CPU from being tied up with that stream until I 
read another 775 bytes?  Is a stream of indefinite length or does it 
have some buffer limit?
Carl

At 01:09 PM 23/12/2013, you wrote:
As I recall gb serial is steam based and so you would handle buffers via
the stream not the serial object.


On Sun, Dec 22, 2013 at 3:01 PM, Carl Nilsson nils...@iinet.net.au wrote:

  G'day all:
  Now with Gambas 3 installed, I want to get on with porting my running
  software from VB6/Windows.  It requires processing multiple streams
  of binary serial data from attached devices.  The serial control in
  gambas 3 does not seem up to the job, in so far as the available
  properties lack the elements I use under VB MScomm.  ...(snip)


  Carl
 
  Carl S Nilsson
  137 Gordons Hill Road
  Lindisfarne, Tas.
  Australia 7015
 
 
 
  
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Re: [Gambas-user] Serial port control

[Randall Morgan]

It has been a long while since I have used the serial component of GB but I
have a project starting in which I will need to re-acquaint myself with it.
The stream can be setup as blocking or non-blocking. The PC uses either
polling or interrupt when the port is opened. So trying to manage the
serial port at the same level you would in on uC is pointless in most
cases. Just set up the stream and read the bytes you need from there. If
you're concerned about buffer overflow then you may want to close the port
once you have read the bytes you need.

Perhaps someone with more recent experience can help you more.




On Sun, Dec 22, 2013 at 7:15 PM, Carl Nilsson nils...@iinet.net.au wrote:

 Randall: Thanks for responding.  OK, I have looked at the stream
 functions:  My question was, basically, how do I specify how many
 bytes I want to take in from a given serial port at each
 instance?  For example, on one input I expect a continuous stream of
 31 byte packets and I want to take them in for processing 25 (say)
 packets at a time, i.e. 775 bytes at a time.  Now I don't much mind
 if I get a few bytes more or less because I can check for a remainder
 part-packet and put it on the front of the next nominal 775 byte
 intake - that's part of the processing software - but I don't want
 the CPU tied up with that port or stream between intakes of (about)
 775 bytes.  There are other input streams and data processing to
 attend to.  I don't see how to do that with the stream functions -
 but maybe I'm not understanding how the stream works?  I can see that
 I could (I think!) read a given number of bytes from a stream, but
 does that relieve the CPU from being tied up with that stream until I
 read another 775 bytes?  Is a stream of indefinite length or does it
 have some buffer limit?
 Carl

 At 01:09 PM 23/12/2013, you wrote:
 As I recall gb serial is steam based and so you would handle buffers via
 the stream not the serial object.
 
 
 On Sun, Dec 22, 2013 at 3:01 PM, Carl Nilsson nils...@iinet.net.au
 wrote:
 
   G'day all:
   Now with Gambas 3 installed, I want to get on with porting my running
   software from VB6/Windows.  It requires processing multiple streams
   of binary serial data from attached devices.  The serial control in
   gambas 3 does not seem up to the job, in so far as the available
   properties lack the elements I use under VB MScomm.  ...(snip)


   Carl
  
   Carl S Nilsson
   137 Gordons Hill Road
   Lindisfarne, Tas.
   Australia 7015
  
  
  
  
 
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 Australia 7015

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Re: [Gambas-user] Serial port control

[Carl Nilsson]

Thanks Randall.  I guess it's time to try it and play around a 
little, which I can't do for a few days.  At the moment I'm trying to 
look ahead and see where problems might lie.  When push comes to 
shove, I don't know how these things really work!  I follow 
recipes!  Don't really want to close the port as the data come in 
continuously as fast as the device can send them and I don't want to 
miss any.  (It's attitude sensor data from an inertial management 
unit in a light aircraft).  Same in principle with another 
continuous stream of binary GPS data with packets of 124 bytes 
coming in at a slower rate of, say, 4 Hz.  How continuous it is 
would depend on the baud rate at which the port is operating.  The 
RThreashold property of MScomm handles this issue very well. Doesn't 
trigger an event until the specified number of bytes is in the serial buffer.
Carl

At 02:47 PM 23/12/2013, you wrote:
It has been a long while since I have used the serial component of GB but I
have a project starting in which I will need to re-acquaint myself with it.
The stream can be setup as blocking or non-blocking. The PC uses either
polling or interrupt when the port is opened. So trying to manage the
serial port at the same level you would in on uC is pointless in most
cases. Just set up the stream and read the bytes you need from there. If
you're concerned about buffer overflow then you may want to close the port
once you have read the bytes you need.

Perhaps someone with more recent experience can help you more.




On Sun, Dec 22, 2013 at 7:15 PM, Carl Nilsson nils...@iinet.net.au wrote:

  Randall: Thanks for responding.  OK, I have looked at the stream
  functions:  My question was, basically, how do I specify how many
  bytes I want to take in from a given serial port at each
  instance?  For example, on one input I expect a continuous stream of
  31 byte packets and I want to take them in for processing 25 (say)
  packets at a time, i.e. 775 bytes at a time.  Now I don't much mind
  if I get a few bytes more or less because I can check for a remainder
  part-packet and put it on the front of the next nominal 775 byte
  intake - that's part of the processing software - but I don't want
  the CPU tied up with that port or stream between intakes of (about)
  775 bytes.  There are other input streams and data processing to
  attend to.  I don't see how to do that with the stream functions -
  but maybe I'm not understanding how the stream works?  I can see that
  I could (I think!) read a given number of bytes from a stream, but
  does that relieve the CPU from being tied up with that stream until I
  read another 775 bytes?  Is a stream of indefinite length or does it
  have some buffer limit?
  Carl
 
  At 01:09 PM 23/12/2013, you wrote:
  As I recall gb serial is steam based and so you would handle buffers via
  the stream not the serial object.
  
  
  On Sun, Dec 22, 2013 at 3:01 PM, Carl Nilsson nils...@iinet.net.au
  wrote:
  
G'day all:
Now with Gambas 3 installed, I want to get on with porting my running
software from VB6/Windows.  It requires processing multiple streams
of binary serial data from attached devices.  The serial control in
gambas 3 does not seem up to the job, in so far as the available
properties lack the elements I use under VB MScomm.  ...(snip)
 
 
Carl
   
Carl S Nilsson
137 Gordons Hill Road
Lindisfarne, Tas.
Australia 7015
   
   
   
   
  
  
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  - 
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  Carl S Nilsson
  137 Gordons Hill 

Re: [Gambas-user] Serial port control

[Randall Morgan]

I think the RTheshold of VB simply sets the byte count that must accumulate
in the receive buffer before a comm event is triggered. It doesn't do
anything else. In the background VB is still polling the buffer and looking
at the byte count. You can do this in GB but you will have to write it
yourself. You would need to simply use the read event on the comm object to
test the byte count. I believe it triggers at 1 byte. Then use that to
trigger your own custom event when your 124 bytes have arrived.

You might also be able to talk Benoit into adding an RThreshold property.
Seems like it might be handy At the very least 4Hz is very very slow
for most computers. And setting up a 4Hz polling of the port wouldn't be
hard at all.


On Sun, Dec 22, 2013 at 8:10 PM, Carl Nilsson nils...@iinet.net.au wrote:

 Thanks Randall.  I guess it's time to try it and play around a
 little, which I can't do for a few days.  At the moment I'm trying to
 look ahead and see where problems might lie.  When push comes to
 shove, I don't know how these things really work!  I follow
 recipes!  Don't really want to close the port as the data come in
 continuously as fast as the device can send them and I don't want to
 miss any.  (It's attitude sensor data from an inertial management
 unit in a light aircraft).  Same in principle with another
 continuous stream of binary GPS data with packets of 124 bytes
 coming in at a slower rate of, say, 4 Hz.  How continuous it is
 would depend on the baud rate at which the port is operating.  The
 RThreashold property of MScomm handles this issue very well. Doesn't
 trigger an event until the specified number of bytes is in the serial
 buffer.
 Carl

 At 02:47 PM 23/12/2013, you wrote:
 It has been a long while since I have used the serial component of GB but
 I
 have a project starting in which I will need to re-acquaint myself with
 it.
 The stream can be setup as blocking or non-blocking. The PC uses either
 polling or interrupt when the port is opened. So trying to manage the
 serial port at the same level you would in on uC is pointless in most
 cases. Just set up the stream and read the bytes you need from there. If
 you're concerned about buffer overflow then you may want to close the port
 once you have read the bytes you need.
 
 Perhaps someone with more recent experience can help you more.
 
 
 
 
 On Sun, Dec 22, 2013 at 7:15 PM, Carl Nilsson nils...@iinet.net.au
 wrote:
 
   Randall: Thanks for responding.  OK, I have looked at the stream
   functions:  My question was, basically, how do I specify how many
   bytes I want to take in from a given serial port at each
   instance?  For example, on one input I expect a continuous stream of
   31 byte packets and I want to take them in for processing 25 (say)
   packets at a time, i.e. 775 bytes at a time.  Now I don't much mind
   if I get a few bytes more or less because I can check for a remainder
   part-packet and put it on the front of the next nominal 775 byte
   intake - that's part of the processing software - but I don't want
   the CPU tied up with that port or stream between intakes of (about)
   775 bytes.  There are other input streams and data processing to
   attend to.  I don't see how to do that with the stream functions -
   but maybe I'm not understanding how the stream works?  I can see that
   I could (I think!) read a given number of bytes from a stream, but
   does that relieve the CPU from being tied up with that stream until I
   read another 775 bytes?  Is a stream of indefinite length or does it
   have some buffer limit?
   Carl
  
   At 01:09 PM 23/12/2013, you wrote:
   As I recall gb serial is steam based and so you would handle buffers
 via
   the stream not the serial object.
   
   
   On Sun, Dec 22, 2013 at 3:01 PM, Carl Nilsson nils...@iinet.net.au
   wrote:
   
 G'day all:
 Now with Gambas 3 installed, I want to get on with porting my
 running
 software from VB6/Windows.  It requires processing multiple streams
 of binary serial data from attached devices.  The serial control in
 gambas 3 does not seem up to the job, in so far as the available
 properties lack the elements I use under VB MScomm.  ...(snip)
  
  
 Carl

 Carl S Nilsson
 137 Gordons Hill Road
 Lindisfarne, Tas.
 Australia 7015




   
  
 
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[Gambas-user] serial port issue

[Robert JUHASZ]

Hello List,

This may not be a fully gambas question just I don't know who to ask for
help - sorry for posting it here.

I try to switch my measurement from windows XP (VB) to Ubuntu 9.10. This
program takes several (3, for the moment) equipments connected to a PC
through serial ports.
It works correctly under XP and I succeeded to make (an even nicer :-)
program in gambas for ubuntu. It also works well... as long as I use the
serial ports integrated on the motherboard.

I have some serial port cards we added later for having enough interface.
From the gtkterm they seems working with short commands so I was optimistic.
But when I send more data from my program they seems not arriving correctly.

Is there anybody who works with serial ports under ubuntu (with gambas)? A
little help would be highly appreciated.

Robi
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Re: [Gambas-user] serial port issue

[Ron]

Maybe try to see if there are any differences between the ports with the 
setserial command.


$ setserial -a /dev/ttyS1
/dev/ttyS1, Line 1, UART: unknown, Port: 0x02f8, IRQ: 3
Baud_base: 115200, close_delay: 50, divisor: 0
closing_wait: 3000
Flags: spd_normal skip_test

$ setserial -a /dev/ttyUSB1
/dev/ttyUSB1, Line 0, UART: unknown, Port: 0x, IRQ: 0
Baud_base: 2400, close_delay: 0, divisor: 0
closing_wait: infinite
Flags: spd_normal low_latency

 Hello List,

 This may not be a fully gambas question just I don't know who to ask for
 help - sorry for posting it here.

 I try to switch my measurement from windows XP (VB) to Ubuntu 9.10. This
 program takes several (3, for the moment) equipments connected to a PC
 through serial ports.
 It works correctly under XP and I succeeded to make (an even nicer :-)
 program in gambas for ubuntu. It also works well... as long as I use the
 serial ports integrated on the motherboard.

 I have some serial port cards we added later for having enough interface.
 From the gtkterm they seems working with short commands so I was optimistic.
 But when I send more data from my program they seems not arriving correctly.

 Is there anybody who works with serial ports under ubuntu (with gambas)? A
 little help would be highly appreciated.

 Robi
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Re: [Gambas-user] serial port issue

[Robert JUHASZ]

All the parameters are the same obtained by autoconfig, except the UART
which was undefined for the added ports.
I set this parameter to the same value as for the working one: 16550A (in
fact I tried all the possible UART parameters and where the port was working
it behaves always the same: short test messages pass but in the real work
environment it crashes).
:-(

Robi



2010/4/21 Ron r...@cyberjunky.nl

 Maybe try to see if there are any differences between the ports with the
 setserial command.


 $ setserial -a /dev/ttyS1
 /dev/ttyS1, Line 1, UART: unknown, Port: 0x02f8, IRQ: 3
Baud_base: 115200, close_delay: 50, divisor: 0
closing_wait: 3000
Flags: spd_normal skip_test

 $ setserial -a /dev/ttyUSB1
 /dev/ttyUSB1, Line 0, UART: unknown, Port: 0x, IRQ: 0
Baud_base: 2400, close_delay: 0, divisor: 0
closing_wait: infinite
Flags: spd_normal low_latency

  Hello List,
 
  This may not be a fully gambas question just I don't know who to ask for
  help - sorry for posting it here.
 
  I try to switch my measurement from windows XP (VB) to Ubuntu 9.10. This
  program takes several (3, for the moment) equipments connected to a PC
  through serial ports.
  It works correctly under XP and I succeeded to make (an even nicer :-)
  program in gambas for ubuntu. It also works well... as long as I use the
  serial ports integrated on the motherboard.
 
  I have some serial port cards we added later for having enough interface.
  From the gtkterm they seems working with short commands so I was
 optimistic.
  But when I send more data from my program they seems not arriving
 correctly.
 
  Is there anybody who works with serial ports under ubuntu (with gambas)?
 A
  little help would be highly appreciated.
 
  Robi
 
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Re: [Gambas-user] serial port issue

[Doriano Blengino]

Robert JUHASZ ha scritto:
 All the parameters are the same obtained by autoconfig, except the UART
 which was undefined for the added ports.
 I set this parameter to the same value as for the working one: 16550A (in
 fact I tried all the possible UART parameters and where the port was working
 it behaves always the same: short test messages pass but in the real work
 environment it crashes).
   
Do you have some sort of handshaking?


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Re: [Gambas-user] serial port issue

[Robert JUHASZ]

The communication parameters are 9600, 8, n, 1, Xon/Xoff.

2010/4/21 Doriano Blengino doriano.bleng...@fastwebnet.it

 Robert JUHASZ ha scritto:
  All the parameters are the same obtained by autoconfig, except the UART
  which was undefined for the added ports.
  I set this parameter to the same value as for the working one: 16550A (in
  fact I tried all the possible UART parameters and where the port was
 working
  it behaves always the same: short test messages pass but in the real work
  environment it crashes).
 
 Do you have some sort of handshaking?



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Re: [Gambas-user] serial port issue

[Doriano Blengino]

Robert JUHASZ ha scritto:
 The communication parameters are 9600, 8, n, 1, Xon/Xoff.
   
 Do you have some sort of handshaking?
 
Then it /could/ happen that the device sends an Xoff, but the software 
does not see it at the correct time.
There has been a similar issue when the new UARTs with fifo came out - 
some application recommended to disable the fifo, because instead of a 
single char to test for an Xoff, the software sometimes received a bunch 
of bytes.

The USB is not really bidirectional like a true serial port, and buffers 
data. So the situation looks similar. Not an easy question. You could 
try hardware flow control, if possible (perhaps you hate it like me). Or 
you can read all the pending incoming data before sending. You can also 
try to break outgoing data in small pieces, to let the driver peek at 
incoming Xoffs. Or you can disable flow control entirely, and implement 
it in your own code.

If you have a serial scope (data tester?) try to see what happens. If 
you don't have one, a PC with two (real!) serial ports can do. If you 
describe or send parts of the code, may be that someone can see some 
caveat in it.

Regards,
Doriano


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Re: [Gambas-user] serial port issue

[Robert JUHASZ]

Thanks for the info! I may need to find some reliable hardware, this can be
an issue (the one installed by my Chinese informatics colleague doesn't give
me too much confidence :-)

Did you have to install any driver to get it working?

Robi

2010/4/21 Ron r...@cyberjunky.nl

 I use a ten ports usb hub and seperate usb to serial cables.
 I have written some udev rules to lock the serial device names to the
 physical ports.. otherwise they change after a reboot.

 To bad I just found these guys afterwards:
 http://www.picco.nl/product_info.php?products_id=2338

 Regards,
 Ron.
  Ron,
 
  I mean that the app doesn't do what I wish him to do :-)
  Unfortunately it works as expected with the serial port on the
 motherboard
  (ttyS0, same equipment connected, same data sent and should have been
  received) so it should not be a bug in my code.
  The connection parameters (including Xon/Xoff) are required by the
 equipment
  I use.
 
  Physically, how did you connect 10 serial ports to your machine? With a
 card
  or do you use virtual ports with USB connector?
 
  Robi
 
  2010/4/21 Ron r...@cyberjunky.nl
 
 
  You mean crashing like in signal #11 core dump or the application
  doesn't do what's wanted?
 
  Which version of Gambas?
 
  There where a few serial port related bug fixes.
  http://gambas.sourceforge.net/en/changelog2.html
 
  I use a lot (10) serial ports in my gambas app. 24/7 but I do not use
  xon/off.
 
  Regards,
  Ron.
 
  The communication parameters are 9600, 8, n, 1, Xon/Xoff.
 
  2010/4/21 Doriano Blengino doriano.bleng...@fastwebnet.it
 
 
 
  Robert JUHASZ ha scritto:
 
 
  All the parameters are the same obtained by autoconfig, except the
 UART
  which was undefined for the added ports.
  I set this parameter to the same value as for the working one: 16550A
 
  (in
 
  fact I tried all the possible UART parameters and where the port was
 
 
  working
 
 
  it behaves always the same: short test messages pass but in the real
 
  work
 
  environment it crashes).
 
 
 
  Do you have some sort of handshaking?
 
 
 
 
 
 
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Re: [Gambas-user] serial port issue

[Ron]

I have no experience with the cable in my link, I just found it 
yesterday, but make sure your usb to serial converters have a FTDI chip 
inside.
Not (like most of mine) an Prolific PL2303 chip since they all have the 
same device id and serial number, so you have a small problem identifing 
them.

I have not installed any drivers, but I had to lock them like this:
http://www.domotiga.nl/wiki/Linux/InstallOpt#Lockserialdevicenames

Here is an old photo of my test server showing some of them:
http://www.domotiga.nl/wiki/Domotiga/SetupPics

Using Ubuntu 9.10

Regards,
Ron.
 Thanks for the info! I may need to find some reliable hardware, this can be
 an issue (the one installed by my Chinese informatics colleague doesn't give
 me too much confidence :-)

 Did you have to install any driver to get it working?

 Robi

 2010/4/21 Ron r...@cyberjunky.nl

   
 I use a ten ports usb hub and seperate usb to serial cables.
 I have written some udev rules to lock the serial device names to the
 physical ports.. otherwise they change after a reboot.

 To bad I just found these guys afterwards:
 http://www.picco.nl/product_info.php?products_id=2338

 Regards,
 Ron.
 
 Ron,

 I mean that the app doesn't do what I wish him to do :-)
 Unfortunately it works as expected with the serial port on the
   
 motherboard
 
 (ttyS0, same equipment connected, same data sent and should have been
 received) so it should not be a bug in my code.
 The connection parameters (including Xon/Xoff) are required by the
   
 equipment
 
 I use.

 Physically, how did you connect 10 serial ports to your machine? With a
   
 card
 
 or do you use virtual ports with USB connector?

 Robi

 2010/4/21 Ron r...@cyberjunky.nl


   
 You mean crashing like in signal #11 core dump or the application
 doesn't do what's wanted?

 Which version of Gambas?

 There where a few serial port related bug fixes.
 http://gambas.sourceforge.net/en/changelog2.html

 I use a lot (10) serial ports in my gambas app. 24/7 but I do not use
 xon/off.

 Regards,
 Ron.

 
 The communication parameters are 9600, 8, n, 1, Xon/Xoff.

 2010/4/21 Doriano Blengino doriano.bleng...@fastwebnet.it



   
 Robert JUHASZ ha scritto:


 
 All the parameters are the same obtained by autoconfig, except the
   
 UART
 
 which was undefined for the added ports.
 I set this parameter to the same value as for the working one: 16550A

   
 (in

 
 fact I tried all the possible UART parameters and where the port was


   
 working


 
 it behaves always the same: short test messages pass but in the real

   
 work

 
 environment it crashes).



   
 Do you have some sort of handshaking?





 
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Re: [Gambas-user] serial port issue

[nando]

I use 6 serial ports, sometimes usb mixed in,
No problem in Gambas whatsoever
-Fernando


-- Original Message ---
From: Ron r...@cyberjunky.nl
To: mailing list for gambas users gambas-user@lists.sourceforge.net
Sent: Wed, 21 Apr 2010 15:29:37 +0200
Subject: Re: [Gambas-user] serial port issue

 I have no experience with the cable in my link, I just found it 
 yesterday, but make sure your usb to serial converters have a FTDI chip 
 inside.
 Not (like most of mine) an Prolific PL2303 chip since they all have the 
 same device id and serial number, so you have a small problem identifing 
 them.
 
 I have not installed any drivers, but I had to lock them like this:
 http://www.domotiga.nl/wiki/Linux/InstallOpt#Lockserialdevicenames
 
 Here is an old photo of my test server showing some of them:
 http://www.domotiga.nl/wiki/Domotiga/SetupPics
 
 Using Ubuntu 9.10
 
 Regards,
 Ron.
  Thanks for the info! I may need to find some reliable hardware, this can be
  an issue (the one installed by my Chinese informatics colleague doesn't give
  me too much confidence :-)
 
  Did you have to install any driver to get it working?
 
  Robi
 
  2010/4/21 Ron r...@cyberjunky.nl
 

  I use a ten ports usb hub and seperate usb to serial cables.
  I have written some udev rules to lock the serial device names to the
  physical ports.. otherwise they change after a reboot.
 
  To bad I just found these guys afterwards:
  http://www.picco.nl/product_info.php?products_id=2338
 
  Regards,
  Ron.
  
  Ron,
 
  I mean that the app doesn't do what I wish him to do :-)
  Unfortunately it works as expected with the serial port on the

  motherboard
  
  (ttyS0, same equipment connected, same data sent and should have been
  received) so it should not be a bug in my code.
  The connection parameters (including Xon/Xoff) are required by the

  equipment
  
  I use.
 
  Physically, how did you connect 10 serial ports to your machine? With a

  card
  
  or do you use virtual ports with USB connector?
 
  Robi
 
  2010/4/21 Ron r...@cyberjunky.nl
 
 

  You mean crashing like in signal #11 core dump or the application
  doesn't do what's wanted?
 
  Which version of Gambas?
 
  There where a few serial port related bug fixes.
  http://gambas.sourceforge.net/en/changelog2.html
 
  I use a lot (10) serial ports in my gambas app. 24/7 but I do not use
  xon/off.
 
  Regards,
  Ron.
 
  
  The communication parameters are 9600, 8, n, 1, Xon/Xoff.
 
  2010/4/21 Doriano Blengino doriano.bleng...@fastwebnet.it
 
 
 

  Robert JUHASZ ha scritto:
 
 
  
  All the parameters are the same obtained by autoconfig, except the

  UART
  
  which was undefined for the added ports.
  I set this parameter to the same value as for the working one: 16550A
 

  (in
 
  
  fact I tried all the possible UART parameters and where the port was
 
 

  working
 
 
  
  it behaves always the same: short test messages pass but in the real
 

  work
 
  
  environment it crashes).
 
 
 

  Do you have some sort of handshaking?
 
 
 
 
 
  
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Re: [Gambas-user] serial port issue (Robert JUHASZ)

[Chris Dunworth]

Hi,

Have you looked at device/terminal servers such as 'nport server' from MOXA
http://www.moxa.com/product/NPort_5410.htm

These devices facilitate RS232 serial comms with devices using TCP/IP
sockets.
Very useful where application does not have serial drivers
Not cheap , but very flexible  expandable.
However if you have existing hardware ...

Chris
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Re: [Gambas-user] Serial port (gb.net) curious error - reading byte value incorrectly.

[Benoît Minisini]

 On 13/01/10 11:00, Anthony Ivan wrote:
  Hello to All,
 
  [Gambas 2.19.0-1 on Fedora 12, Intel X86_64]
 
  I am currently working on a little project that communicates with a VHF
  radio via the MAP27 instruction set. All is working perfectly except for
  one small error... as detailed below...
 
  When the radio communicates with the PC the serialport_read() triggers
  perfectly and takes the byte's of data provided and places them into a
  queue for processing ... a typical translated incoming hex string may
  look something like:
  16 10 02 04 01 00 00 10 03
 
  The next message will increment the 5th byte value by one thus giving:
  16 10 02 04 02 00 00 10 03
 
  Oddly enough if the value coming to the serial port from the radio is 1D
  (binary value 00011101), Gambas seems to see that value as 1A (binary
  value 00011010).
  Every other input is working perfectly... and there is absolute
  certainty that the incoming byte value is indeed 1D. Also, the outbound
  side is ok... if I reply to the radio as if it had sent a 1D with the
  appropriate CRC16 checksum everything is happy. Could this be a small
  error in the serial code (gb.Net) that someone has encountered or rather
  a known issue elsewhere which I have not yet found in my searches?
 
  Thanks,
 
  Anthony
 
 We've discussed that about one month ago. It is about a flag that must
 be set/cleared. The thread can be found in the archive.
 
 Regards
 Werner
 

Yes. I forgot that problem.

I fixed it in revision #2610. Now the CR/NL input conversion flags are cleared 
when opening a serial port.

Regards,

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[Gambas-user] Serial port (gb.net) curious error - reading byte value incorrectly.

[Anthony Ivan]

Hello to All,

[Gambas 2.19.0-1 on Fedora 12, Intel X86_64]

I am currently working on a little project that communicates with a VHF 
radio via the MAP27 instruction set. All is working perfectly except for 
one small error... as detailed below...

When the radio communicates with the PC the serialport_read() triggers 
perfectly and takes the byte's of data provided and places them into a 
queue for processing ... a typical translated incoming hex string may 
look something like:
16 10 02 04 01 00 00 10 03

The next message will increment the 5th byte value by one thus giving:
16 10 02 04 02 00 00 10 03

Oddly enough if the value coming to the serial port from the radio is 1D 
(binary value 00011101), Gambas seems to see that value as 1A (binary 
value 00011010).
Every other input is working perfectly... and there is absolute 
certainty that the incoming byte value is indeed 1D. Also, the outbound 
side is ok... if I reply to the radio as if it had sent a 1D with the 
appropriate CRC16 checksum everything is happy. Could this be a small 
error in the serial code (gb.Net) that someone has encountered or rather 
a known issue elsewhere which I have not yet found in my searches?

Thanks,

Anthony


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Re: [Gambas-user] Serial port (gb.net) curious error - reading byte value incorrectly.

[Werner]

On 13/01/10 11:00, Anthony Ivan wrote:
 Hello to All,

 [Gambas 2.19.0-1 on Fedora 12, Intel X86_64]

 I am currently working on a little project that communicates with a VHF 
 radio via the MAP27 instruction set. All is working perfectly except for 
 one small error... as detailed below...

 When the radio communicates with the PC the serialport_read() triggers 
 perfectly and takes the byte's of data provided and places them into a 
 queue for processing ... a typical translated incoming hex string may 
 look something like:
 16 10 02 04 01 00 00 10 03

 The next message will increment the 5th byte value by one thus giving:
 16 10 02 04 02 00 00 10 03

 Oddly enough if the value coming to the serial port from the radio is 1D 
 (binary value 00011101), Gambas seems to see that value as 1A (binary 
 value 00011010).
 Every other input is working perfectly... and there is absolute 
 certainty that the incoming byte value is indeed 1D. Also, the outbound 
 side is ok... if I reply to the radio as if it had sent a 1D with the 
 appropriate CRC16 checksum everything is happy. Could this be a small 
 error in the serial code (gb.Net) that someone has encountered or rather 
 a known issue elsewhere which I have not yet found in my searches?

 Thanks,

 Anthony
   
We've discussed that about one month ago. It is about a flag that must
be set/cleared. The thread can be found in the archive.

Regards
Werner


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Re: [Gambas-user] serial port

[yuhej]

Hello,

I'm very happy with the serial port communication, just I have some more
question.

When I start the application, I don't know what ports will be used and how
many.
So I have an object array where I add new serial ports depending on the
hardware configuration.

From this object array, I'm able to send and receive data. I just don't know
how to access to the serial port events (read). Can someone help me in this
matter?

Thanks,
Robi


yuhej wrote:
 
 Useful info, I'll do like that.
 Thanks, Robi
 
 2009/9/19 nando nand...@nothingsimple.com
 
 In my Linux serial port experience, serial port devices are named:

 /dev/ttyS0..9 and upwards
 /dev/ttyUSB0..9 and upwards depending on what is plugged in USB.

 I have done a lot of serial port stuff with Gambas.

 I know that trying to open then with the serial port control
 will fail is non-exising port. This error can be detected.

 It can be possible to open a port as a test to see if it exists, but you
 may be changing parameters and stealing chars from an existing
 connection.
 I've had this happen tooreally messes things up.

 -Fernando


 -- Original Message ---
 From: yuhej robert1juh...@gmail.com
 To: gambas-user@lists.sourceforge.net
 Sent: Fri, 18 Sep 2009 21:08:04 -0700 (PDT)
 Subject: [Gambas-user]  serial port

  Hello,
 
  I can see that Gambas can handle the serial ports which is a very good
 news
  for me.
  Can someone tell me how can I get the list of the serial ports of my
  computer? I wish to make an autodetect function and only allow to
 select
  from the working serial ports.
 
  Robi
  --
  View this message in context:
 http://www.nabble.com/serial-port-tp25518421p25518421.html
  Sent from the gambas-user mailing list archive at Nabble.com.
 
 
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Sent from the gambas-user mailing list archive at Nabble.com.


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Re: [Gambas-user] Serial port data being changed ????

[Les Hardy]

Benoît Minisini wrote:

 
 I'm not a serial port user at all, and I find that behaviour a bit strange.
 
 Would it be useful to make a property for that? Or maybe it does already 
 exist 
 in the SerialPort class, and I didn't see it.
 

Nothing strange really. Its been like that as long as I can remember.
It is not possible to tranfer binary data correctly without setting the
icrnl and ocrnl flags off.

Its been a long time since I was near C, but I'm fairly sure they are
included in termios.h, and are the c_iflag and c_oflag.

(sent this twice. mail is bouncing back)








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Re: [Gambas-user] Serial port data being changed ????

[Les Hardy]

mike wrote:
 I'm having trouble with Gambas and the serial ports.
 Something is changing binary h0d to h0a when received
 from a serial port. I noticed it in a program that I've
 been working on that receives packets of binary data
 from a microprocessor. I wrote a little test program to
 demonstrate the problem and have included it below. I also
 reprogrammed the micro to simply send h0d as long a
 pushbutton is held depressed. I have verified that the
 correct data is indeed being sent using CuteCom to display
 the binary data.
 An interesting thing that I noticed when I ran CuteCom to
 test the data being received is that if I close CuteCom without
 closing the serial port first then run my Gambas program, it works
 fine until I restart the system. If I close the port before closing
 CuteCom then my Gambas program fails.
 
 
 This is the code for the test program.
 
 ' Gambas class file
 ' Using Gambas 2.18 on a system running
 ' Fedora Kernel (26.30.9-102.fc11.x86_64)
 ' It also fails running Gambas 2.11
 ' on my laptop running
 ' Fedora Kernel (2.6.27.25-78.2.56.fc9.i686)
 
 PUBLIC SUB Form_Open()
 
ME.Center
 
 ' Setup the serial port - 9600,8,N,1
 
 '  SerPort1.PortName = /dev/ttyS0 ' Both ports fail
SerPort1.PortName = /dev/ttyUSB0' This the port I'll eventually use
SerPort1.Speed = 9600   ' because the laptop has no 
 serial port.
SerPort1.DataBits = 8
SerPort1.Parity = 0
SerPort1.StopBits = 1
SerPort1.Open
 
TextArea1.Text = SerPort1.PortName  Chr$(10)
 END
 
 PUBLIC SUB SerPort1_Read()
 
 ' A microprocessor is connected to the serial port and
 ' continuously sends h0d (CR) as long a push button is held down.
 
 DIM InByte AS Byte
 
READ #SerPort1, InByte
TextArea1.Insert(Hex$(InByte)   )
 ' The textarea displays a series of A  (LF) instead of D  (CR)
 END
 
 PUBLIC SUB ExitBtn_Click()
 
SerPort1.Close
QUIT
 END
 
 PUBLIC SUB ClearBtn_Click()
 
TextArea1.Clear
 END



This is a Linux thing. Not Gambas. The icrnl flaf is set as standard.
Easiest way is to use stty to change it.

SHELL stty -F   SerPort1.PortName   -icrnl



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Re: [Gambas-user] Serial port data being changed ????

[Kadaitcha Man]

2009/12/8 Les Hardy l...@webmayo.com:

 This is a Linux thing. Not Gambas.

Linux has a lot of things. I learned the hard way that localhost
TCP/IP ports below 1024 are protected. Sheesh. I lost a full day to
that. Today I lost several hours to Gambas behaviour that is expained
by bugs in Qt3.

Nevertheless your point is valuable. I'm going to mark your Linux
thing for inclusion in the documentation. Of course, I first have to
figure out if icrnl flaf is a typo or an esoteric command line :)

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Re: [Gambas-user] Serial port data being changed ????

[Les Hardy]

Kadaitcha Man wrote:
I first have to figure out if icrnl flaf is a typo or an esoteric 
command line :)
 
Yes, esoteric, makes me feel special. Only a few know about flafs.

Then again, it could just be flag.


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Re: [Gambas-user] Serial port data being changed ???? -- Solved

[mike]

Ahh, Thank you. Now I can move on to finish my project.

snip

 This is a Linux thing. Not Gambas. The icrnl flaf is set as standard.
 Easiest way is to use stty to change it.

 SHELL stty -F   SerPort1.PortName   -icrnl



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Re: [Gambas-user] Serial port data being changed ????

[Benoît Minisini]

 mike wrote:
  I'm having trouble with Gambas and the serial ports.
  Something is changing binary h0d to h0a when received
  from a serial port. I noticed it in a program that I've
  been working on that receives packets of binary data
  from a microprocessor. I wrote a little test program to
  demonstrate the problem and have included it below. I also
  reprogrammed the micro to simply send h0d as long a
  pushbutton is held depressed. I have verified that the
  correct data is indeed being sent using CuteCom to display
  the binary data.
  An interesting thing that I noticed when I ran CuteCom to
  test the data being received is that if I close CuteCom without
  closing the serial port first then run my Gambas program, it works
  fine until I restart the system. If I close the port before closing
  CuteCom then my Gambas program fails.
 
 
  This is the code for the test program.
 
  ' Gambas class file
  ' Using Gambas 2.18 on a system running
  ' Fedora Kernel (26.30.9-102.fc11.x86_64)
  ' It also fails running Gambas 2.11
  ' on my laptop running
  ' Fedora Kernel (2.6.27.25-78.2.56.fc9.i686)
 
  PUBLIC SUB Form_Open()
 
 ME.Center
 
  ' Setup the serial port - 9600,8,N,1
 
  '  SerPort1.PortName = /dev/ttyS0 ' Both ports fail
 SerPort1.PortName = /dev/ttyUSB0' This the port I'll eventually
  use SerPort1.Speed = 9600   ' because the laptop has no
  serial port.
 SerPort1.DataBits = 8
 SerPort1.Parity = 0
 SerPort1.StopBits = 1
 SerPort1.Open
 
 TextArea1.Text = SerPort1.PortName  Chr$(10)
  END
 
  PUBLIC SUB SerPort1_Read()
 
  ' A microprocessor is connected to the serial port and
  ' continuously sends h0d (CR) as long a push button is held down.
 
  DIM InByte AS Byte
 
 READ #SerPort1, InByte
 TextArea1.Insert(Hex$(InByte)   )
  ' The textarea displays a series of A  (LF) instead of D  (CR)
  END
 
  PUBLIC SUB ExitBtn_Click()
 
 SerPort1.Close
 QUIT
  END
 
  PUBLIC SUB ClearBtn_Click()
 
 TextArea1.Clear
  END
 
 This is a Linux thing. Not Gambas. The icrnl flaf is set as standard.
 Easiest way is to use stty to change it.
 
 SHELL stty -F   SerPort1.PortName   -icrnl
 

I'm not a serial port user at all, and I find that behaviour a bit strange.

Would it be useful to make a property for that? Or maybe it does already exist 
in the SerialPort class, and I didn't see it.

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Re: [Gambas-user] Serial port data being changed ????

[Ron]

Benoît Minisini schreef:
 mike wrote:
 
 I'm having trouble with Gambas and the serial ports.
 Something is changing binary h0d to h0a when received
 from a serial port. I noticed it in a program that I've
 been working on that receives packets of binary data
 from a microprocessor. I wrote a little test program to
 demonstrate the problem and have included it below. I also
 reprogrammed the micro to simply send h0d as long a
 pushbutton is held depressed. I have verified that the
 correct data is indeed being sent using CuteCom to display
 the binary data.
 An interesting thing that I noticed when I ran CuteCom to
 test the data being received is that if I close CuteCom without
 closing the serial port first then run my Gambas program, it works
 fine until I restart the system. If I close the port before closing
 CuteCom then my Gambas program fails.


 This is the code for the test program.

 ' Gambas class file
 ' Using Gambas 2.18 on a system running
 ' Fedora Kernel (26.30.9-102.fc11.x86_64)
 ' It also fails running Gambas 2.11
 ' on my laptop running
 ' Fedora Kernel (2.6.27.25-78.2.56.fc9.i686)

 PUBLIC SUB Form_Open()

ME.Center

 ' Setup the serial port - 9600,8,N,1

 '  SerPort1.PortName = /dev/ttyS0 ' Both ports fail
SerPort1.PortName = /dev/ttyUSB0' This the port I'll eventually
 use SerPort1.Speed = 9600   ' because the laptop has no
 serial port.
SerPort1.DataBits = 8
SerPort1.Parity = 0
SerPort1.StopBits = 1
SerPort1.Open

TextArea1.Text = SerPort1.PortName  Chr$(10)
 END

 PUBLIC SUB SerPort1_Read()

 ' A microprocessor is connected to the serial port and
 ' continuously sends h0d (CR) as long a push button is held down.

 DIM InByte AS Byte

READ #SerPort1, InByte
TextArea1.Insert(Hex$(InByte)   )
 ' The textarea displays a series of A  (LF) instead of D  (CR)
 END

 PUBLIC SUB ExitBtn_Click()

SerPort1.Close
QUIT
 END

 PUBLIC SUB ClearBtn_Click()

TextArea1.Clear
 END
   
 This is a Linux thing. Not Gambas. The icrnl flaf is set as standard.
 Easiest way is to use stty to change it.

 SHELL stty -F   SerPort1.PortName   -icrnl

 

 I'm not a serial port user at all, and I find that behaviour a bit strange.

   

Me too.

I have build serial support for about 10 different hardware devices in 
my Gambas project both binary and ASCII and didn't stumble upon this 
strange behavior (yet?)

Regards,
Ron_2nd.


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Re: [Gambas-user] Serial port data being changed ????

[Doriano Blengino]

Ron ha scritto:
 Benoît Minisini schreef:
   
 mike wrote:
 
   
 I'm having trouble with Gambas and the serial ports.
 Something is changing binary h0d to h0a when received
 from a serial port. I noticed it in a program that I've
 been working on that receives packets of binary data
 from a microprocessor. I wrote a little test program to
 demonstrate the problem and have included it below. I also
 reprogrammed the micro to simply send h0d as long a
 pushbutton is held depressed. I have verified that the
 correct data is indeed being sent using CuteCom to display
 the binary data.
 An interesting thing that I noticed when I ran CuteCom to
 test the data being received is that if I close CuteCom without
 closing the serial port first then run my Gambas program, it works
 fine until I restart the system. If I close the port before closing
 CuteCom then my Gambas program fails.


 This is the code for the test program.

 ' Gambas class file
 ' Using Gambas 2.18 on a system running
 ' Fedora Kernel (26.30.9-102.fc11.x86_64)
 ' It also fails running Gambas 2.11
 ' on my laptop running
 ' Fedora Kernel (2.6.27.25-78.2.56.fc9.i686)

 PUBLIC SUB Form_Open()

ME.Center

 ' Setup the serial port - 9600,8,N,1

 '  SerPort1.PortName = /dev/ttyS0 ' Both ports fail
SerPort1.PortName = /dev/ttyUSB0' This the port I'll eventually
 use SerPort1.Speed = 9600   ' because the laptop has no
 serial port.
SerPort1.DataBits = 8
SerPort1.Parity = 0
SerPort1.StopBits = 1
SerPort1.Open

TextArea1.Text = SerPort1.PortName  Chr$(10)
 END

 PUBLIC SUB SerPort1_Read()

 ' A microprocessor is connected to the serial port and
 ' continuously sends h0d (CR) as long a push button is held down.

 DIM InByte AS Byte

READ #SerPort1, InByte
TextArea1.Insert(Hex$(InByte)   )
 ' The textarea displays a series of A  (LF) instead of D  (CR)
 END

 PUBLIC SUB ExitBtn_Click()

SerPort1.Close
QUIT
 END

 PUBLIC SUB ClearBtn_Click()

TextArea1.Clear
 END
   
 
 This is a Linux thing. Not Gambas. The icrnl flaf is set as standard.
 Easiest way is to use stty to change it.

 SHELL stty -F   SerPort1.PortName   -icrnl

 
   
 I'm not a serial port user at all, and I find that behaviour a bit strange.

   
 

 Me too.

 I have build serial support for about 10 different hardware devices in 
 my Gambas project both binary and ASCII and didn't stumble upon this 
 strange behavior (yet?)
   
Could it be that some other process is using the port (getty, mgetty)? 
And that that process programs the serial driver? Because those stty 
things should be related, I think, to terminal devices, not general 
serial drivers as used by pppd, for example.

Just put this way - I really don't know.
Regards,

-- 
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Listen twice before you speak.
This is why we have two ears, but only one mouth.


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Re: [Gambas-user] Serial port data being changed ????

[nospam.nospam.nospam]

Les Hardy wrote:
 Kadaitcha Man wrote:
 I first have to figure out if icrnl flaf is a typo or an esoteric
 command line :)
 
 Yes, esoteric, makes me feel special. Only a few know about flafs.

lol

 Then again, it could just be flag.

Nah. That'd ruin the whole effect.

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Re: [Gambas-user] Serial port data being changed ????

[Mike]

   Benoît Minisini wrote:
   snip

This is a Linux thing. Not Gambas. The icrnl flaf is set as standard.
Easiest way is to use stty to change it.

SHELL stty -F   SerPort1.PortName   -icrnl



I'm not a serial port user at all, and I find that behaviour a bit strange.

Would it be useful to make a property for that? Or maybe it does already exist 
in the SerialPort class, and I didn't see it.

  

   If not property setting then at least a reference in the docs to the stty
   thing would have been very helpful.
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[Gambas-user] Serial port data being changed ????

[mike]

I'm having trouble with Gambas and the serial ports.
Something is changing binary h0d to h0a when received
from a serial port. I noticed it in a program that I've
been working on that receives packets of binary data
from a microprocessor. I wrote a little test program to
demonstrate the problem and have included it below. I also
reprogrammed the micro to simply send h0d as long a
pushbutton is held depressed. I have verified that the
correct data is indeed being sent using CuteCom to display
the binary data.
An interesting thing that I noticed when I ran CuteCom to
test the data being received is that if I close CuteCom without
closing the serial port first then run my Gambas program, it works
fine until I restart the system. If I close the port before closing
CuteCom then my Gambas program fails.


This is the code for the test program.

' Gambas class file
' Using Gambas 2.18 on a system running
' Fedora Kernel (26.30.9-102.fc11.x86_64)
' It also fails running Gambas 2.11
' on my laptop running
' Fedora Kernel (2.6.27.25-78.2.56.fc9.i686)

PUBLIC SUB Form_Open()

   ME.Center

' Setup the serial port - 9600,8,N,1

'  SerPort1.PortName = /dev/ttyS0 ' Both ports fail
   SerPort1.PortName = /dev/ttyUSB0' This the port I'll eventually use
   SerPort1.Speed = 9600   ' because the laptop has no 
serial port.
   SerPort1.DataBits = 8
   SerPort1.Parity = 0
   SerPort1.StopBits = 1
   SerPort1.Open

   TextArea1.Text = SerPort1.PortName  Chr$(10)
END

PUBLIC SUB SerPort1_Read()

' A microprocessor is connected to the serial port and
' continuously sends h0d (CR) as long a push button is held down.

DIM InByte AS Byte

   READ #SerPort1, InByte
   TextArea1.Insert(Hex$(InByte)   )
' The textarea displays a series of A  (LF) instead of D  (CR)
END

PUBLIC SUB ExitBtn_Click()

   SerPort1.Close
   QUIT
END

PUBLIC SUB ClearBtn_Click()

   TextArea1.Clear
END

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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Benoît Minisini]

 I found out that reading one by one is a slow process,
 I found out that reading all Lof will in a rare instance _READ will not
  fire when only 1 byte arrives immediately after.
 I find it works correctly 100% when I read Lof()-1 and rely on _Read to
  fire again. for the one remaining and the new one arriving immediately
  after.
 

Uh... Very strange! It would be cool if you could try your program with the 
latest Gambas 2 or Gambas 3 and see if you have to do the same trick.

Regards,

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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Tony]

   Benoît Minisini wrote:

I found out that reading one by one is a slow process,
I found out that reading all Lof will in a rare instance _READ will not
 fire when only 1 byte arrives immediately after.
I find it works correctly 100% when I read Lof()-1 and rely on _Read to
 fire again. for the one remaining and the new one arriving immediately
 after.



Uh... Very strange! It would be cool if you could try your program with the 
latest Gambas 2 or Gambas 3 and see if you have to do the same trick.

Regards,

  

   Hi all,
   I'd just like to report that with revision 2459, the change events have been
   restored for my application. I tried flowcontrol none/hardware/software/both
   and couldn't pick any appreciable difference in CPU utilisation. The funny
   thing is that the anomoly reported in a previous email -   The application
   also uses the UDPsocket to communicate remotely and what I have noticed is
   that if the serial port does not open correctly e.g. /dev/tty wrong and the
   UDPsocket is open, then there is a large amount of CPU used. Both open
   correctly and CPU normal - appears to be fixed. Whilst I don't understand
   why this has been fixed, it would seem to be another plus.
   Regards,
   Tony.
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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Ron]

Benoît Minisini schreef:
Benoit,
Here is the output of valgrind as requested. I hope it helps.
Regards,
Tony..
$ valgrind --tool=memcheck --num-callers=50 gbx2
==2404== Memcheck, a memory error detector
==2404== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.
==2404== Using Valgrind-3.5.0-Debian and LibVEX; rerun with -h for
  copyright info
==2404== Command: gbx2
==2404==
/dev/ttyUSB0
19200
0
8
1
1
1
==2404== Invalid read of size 4
==2404==at 0x535C586: CSerialPort_CallBack (CSerialPort.c:120)
==2404==by 0x4663A21: CWatch::write(int) (CWatch.cpp:143)
==2404==   by0x4663885:CWatch::qt_invoke(int,   QUObject*)
(CWatch_moc.cpp:91)
...
 

 Is it better with revision #2455? (Ron, you can try too!)

   
I guess not...

Program received signal SIGSEGV, Segmentation fault.
GB_Raise (object=0xd, event_id=0, nparam=0) at gbx_api.c:528
528OBJECT_REF(object, GB_Raise);
(gdb) bt
#0  GB_Raise (object=0xd, event_id=0, nparam=0) at gbx_api.c:528
#1  0x00334cd5 in CSerialPort_ReadCallBack (_object=0xd) at 
CSerialPort.c:175
#2  0x08060997 in raise_callback (wait=value optimized out) at 
gbx_watch.c:425
#3  do_loop (wait=value optimized out) at gbx_watch.c:498
#4  0x08060b04 in WATCH_loop () at gbx_watch.c:530
#5  0x08061b72 in main (argc=134739040, argv=0xb4f4) at gbx.c:358
(gdb)


==5235== Memcheck, a memory error detector
==5235== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.
==5235== Using Valgrind-3.5.0-Debian and LibVEX; rerun with -h for 
copyright info
==5235== Command: gbx2 -p
==5235== Parent PID: 16998
==5235==
==5235== Invalid read of size 4
==5235==at 0x805D8DA: GB_Raise (gbx_api.c:528)
==5235==by 0x460CCD4: CSerialPort_ReadCallBack (CSerialPort.c:175)
==5235==by 0x8060996: do_loop (gbx_watch.c:425)
==5235==by 0x8060B03: WATCH_loop (gbx_watch.c:530)
==5235==by 0x8061B71: main (gbx.c:358)
==5235==  Address 0x10 is not stack'd, malloc'd or (recently) free'd
==5235==
==5235==
==5235== Process terminating with default action of signal 11 (SIGSEGV): 
dumping core
==5235==  Access not within mapped region at address 0x10
==5235==at 0x805D8DA: GB_Raise (gbx_api.c:528)
==5235==by 0x460CCD4: CSerialPort_ReadCallBack (CSerialPort.c:175)
==5235==by 0x8060996: do_loop (gbx_watch.c:425)
==5235==by 0x8060B03: WATCH_loop (gbx_watch.c:530)
==5235==by 0x8061B71: main (gbx.c:358)
==5235==  If you believe this happened as a result of a stack
==5235==  overflow in your program's main thread (unlikely but
==5235==  possible), you can try to increase the size of the
==5235==  main thread stack using the --main-stacksize= flag.
==5235==  The main thread stack size used in this run was 8388608.

Regards,
Ron_2nd.

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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Benoît Minisini]

It should be ok with revision #2456!

If it really works, can you check that changing the flow control between None 
and something else actually has an effect on CPU consumption?

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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Ron]

Benoît Minisini schreef:
 It should be ok with revision #2456!

 If it really works, can you check that changing the flow control between None 
 and something else actually has an effect on CPU consumption?

   
Benoît,

no segfaults, but the system load when running my project with the patch 
is alot higher than before.

Before it was 0.2-0.3
Now it's 1.0-1.10

I'm not using flowcontrol.

$ grep FlowControl *
CCTX35.class:.FlowControl = 0
CGPS.class:.FlowControl = 0
CPlugwise.class:.FlowControl = 0
CRFXComRX.class:.FlowControl = 0
CRFXComTX.class:.FlowControl = 0
CSMS.class:.FlowControl = 0
CVISCA.class:.FlowControl = 0
CWeeder.class:.FlowControl = 0
CZWave.class:.FlowControl = 0

Six of these serialports are active.
And I presume 0 is the same as None.

Regards,
Ron_2nd.

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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Benoît Minisini]

 Benoît Minisini schreef:
  It should be ok with revision #2456!
 
  If it really works, can you check that changing the flow control between
  None and something else actually has an effect on CPU consumption?
 
 Benoît,
 
 no segfaults, but the system load when running my project with the patch
 is alot higher than before.
 
 Before it was 0.2-0.3
 Now it's 1.0-1.10
 
 I'm not using flowcontrol.
 
 $ grep FlowControl *
 CCTX35.class:.FlowControl = 0
 CGPS.class:.FlowControl = 0
 CPlugwise.class:.FlowControl = 0
 CRFXComRX.class:.FlowControl = 0
 CRFXComTX.class:.FlowControl = 0
 CSMS.class:.FlowControl = 0
 CVISCA.class:.FlowControl = 0
 CWeeder.class:.FlowControl = 0
 CZWave.class:.FlowControl = 0
 
 Six of these serialports are active.
 And I presume 0 is the same as None.
 
 Regards,
 Ron_2nd.
 

That would mean that the Read callback is called endlessly, as if there are 
always bytes to read on the serial port.

Do you use the read event? Can you check that by implementing a Read event 
handler, check how much time it is called, and check what can be read on the 
serial port?

If there is something to read on the serial port, if there are data to read, 
and if you don't read it, the Read callback will be called again and again.

Regards,


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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Ron]

Benoît Minisini schreef:
 Benoît Minisini schreef:
 
 It should be ok with revision #2456!

 If it really works, can you check that changing the flow control between
 None and something else actually has an effect on CPU consumption?
   
 Benoît,

 no segfaults, but the system load when running my project with the patch
 is alot higher than before.

 Before it was 0.2-0.3
 Now it's 1.0-1.10

 I'm not using flowcontrol.

 $ grep FlowControl *
 CCTX35.class:.FlowControl = 0
 CGPS.class:.FlowControl = 0
 CPlugwise.class:.FlowControl = 0
 CRFXComRX.class:.FlowControl = 0
 CRFXComTX.class:.FlowControl = 0
 CSMS.class:.FlowControl = 0
 CVISCA.class:.FlowControl = 0
 CWeeder.class:.FlowControl = 0
 CZWave.class:.FlowControl = 0

 Six of these serialports are active.
 And I presume 0 is the same as None.

 Regards,
 Ron_2nd.

 

 That would mean that the Read callback is called endlessly, as if there are 
 always bytes to read on the serial port.

 Do you use the read event? Can you check that by implementing a Read event 
 handler, check how much time it is called, and check what can be read on the 
 serial port?

 If there is something to read on the serial port, if there are data to read, 
 and if you don't read it, the Read callback will be called again and again.

 Regards,


   
Almost all of them use a  Read event handler.

CRFXComRX receives the most number of bytes, as it receives data from 
all of my temp/energy sensors.

I have this defined:

PUBLIC SUB RFXComRXSer_Read()

  DIM sData AS Byte

  READ #hRFXComRXSer, sData
  ProcessReceivedChar(sData)

END

So it reads data byte by byte and process them.

Sure a continues flow of data, but before the latest rev. everything 
works with very low cpuload (with even higher serial loads) .
I don't want to loose that!

My guess is that now the Read event is called even when there is no 
data, otherwise I couldn't have a much lower load without changes to my 
code.

I remember having reported the same issue of high loads of serialport 
code, you fixed it here:

Revision: 1796
  http://gambas.svn.sourceforge.net/gambas/?rev=1796view=rev
Author:   gambas
Date: 2009-01-12 21:24:47 + (Mon, 12 Jan 2009)

Log Message:
---
[GB.NET]
* BUG: Serial port devices are now watched for reading, not for writing. So 
  the callback will not be called permanently.

Modified Paths:
--

gambas/branches/2.0/gb.net/src/CSerialPort.c



Is this related to the fix you have put in now?


If you want I can run valgrind/kcachegrind, but I have to make some free 
time first.

Regards,
Ron_2nd.

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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Jean-Yves F. Barbier]

Ron a écrit :
...   
 runned valgrind tool for a while.
 
 And I got a rather strange winner, I got 3 milion calls of _add_char in
 gb_error.c
 
 Some debug code hanging around or something like that?
 
 See attached valgrind file.

May be that's a source for what I noticed (Debian sid, XP2600+, 1.5GB RAM):
if I start a GB project while there a CPU (or I/O) hungry process running,
half the time GB says its running, but no window shows on screen.

JY
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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Benoît Minisini]

 Benoît Minisini schreef:
  Benoît Minisini schreef:
  It should be ok with revision #2456!
 
  If it really works, can you check that changing the flow control
  between None and something else actually has an effect on CPU
  consumption?
 
  Benoît,
 
  no segfaults, but the system load when running my project with the patch
  is alot higher than before.
 
  Before it was 0.2-0.3
  Now it's 1.0-1.10
 
  I'm not using flowcontrol.
 
  $ grep FlowControl *
  CCTX35.class:.FlowControl = 0
  CGPS.class:.FlowControl = 0
  CPlugwise.class:.FlowControl = 0
  CRFXComRX.class:.FlowControl = 0
  CRFXComTX.class:.FlowControl = 0
  CSMS.class:.FlowControl = 0
  CVISCA.class:.FlowControl = 0
  CWeeder.class:.FlowControl = 0
  CZWave.class:.FlowControl = 0
 
  Six of these serialports are active.
  And I presume 0 is the same as None.
 
  Regards,
  Ron_2nd.
 
  That would mean that the Read callback is called endlessly, as if there
  are always bytes to read on the serial port.
 
  Do you use the read event? Can you check that by implementing a Read
  event handler, check how much time it is called, and check what can be
  read on the serial port?
 
  If there is something to read on the serial port, if there are data to
  read, and if you don't read it, the Read callback will be called again
  and again.
 
  Regards,
 
 Benoit,
 
 runned valgrind tool for a while.
 
 And I got a rather strange winner, I got 3 milion calls of _add_char in
 gb_error.c
 
 Some debug code hanging around or something like that?
 
 See attached valgrind file.
 
 Regards,
 Ron_2nd.
 

The reason is a lot of one-byte reading that raises the EOF error. This should 
be logical if the read event handler is called whereas there is nothing to 
read, and then you read one byte.

But why Linux tells me (the interpreter actually) that there is something to 
read on the serial port file descriptor, whereas there is nothing?

Regards,

-- 
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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[nando]

I found out that reading one by one is a slow process,
I found out that reading all Lof will in a rare instance _READ will not fire
when only 1 byte arrives immediately after.
I find it works correctly 100% when I read Lof()-1 and rely on _Read to fire 
again.
for the one remaining and the new one arriving immediately after.


-- Original Message ---
From: Benoît Minisini gam...@users.sourceforge.net
To: nand...@nothingsimple.com, mailing list for gambas users
gambas-user@lists.sourceforge.net
Sent: Sat, 5 Dec 2009 21:56:41 +0100
Subject: Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade 
to Karmic

  Benoit,
  Just to let you know, for your information only.
  My serial port applicationS that have been running 24 hours for 4 years on
  over 150 computers works much better when pull out All less 1 byte each
  _Read event as opposed to.
 
 I didn't understand the last sentence. Do you read bytes one by one or all at 
 once? You should read all available bytes at once, by using the Lof() 
 function.
 
 Regards,
 
 -- 
 Benoît Minisini
 
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--- End of Original Message ---

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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Tony]

   Hi Benoit,
   I have muddled my way through the subversion bit, hopefully correctly and
   compiled the 2454 version. When opening my application I get the error
   message The program has stopped unexpectedly raising signal #11 with the
   CPU at 100%. If I try to open the wrong ttyUSBx, the application flags this
   error and behaves correctly, so I would assume that if the ttyUSBx opens OK
   then the most recent Gambas2 changes have induced the signal #11 problem.
   Can you please let me know how to debug further and assist you with your
   efforts.
   Thanks and regards,
   Tony..
   Benoît Minisini wrote:

   Thanks Benoit and all for your speedy replies..
   I'm using the serial port in a timing application with 3 laser through
 beam sensors feeding into the CTS, RI and DSR lines of the serial port. In
 this mode I don't pass any data, don't really care about flow control and
 am only interested in the raw status change events. Working this way I
 haven't noticed gross CPU utilisation after opening the port.  The
 application also uses the UDPsocket to communicate remotely and what I
 have noticed is that if the serial port does not open correctly e.g.
 /dev/tty wrong and the UDPsocket is open, then there is a large amount
 of CPU used. Both open correctly and CPU normal.
   Can you tell me the polling frequency in Gambas2 2.8 ?
   I would assume that there ore other users of Gambas2 who are using the
   serial  port  as  a  convenient  way of passing external events to the
   application, so maybe some input from them would also be in order. As
 long as there is a mechanism to replicate the Gambas2 2.8 functionality
 that I currently use, I'll leave the implementation up to those who know a
 lot more than myself. If going back to polling, a property to define the
 frequency would be nice.
   Thanks again,
   Tony.


Can you try the revision #2454? I think I have found and fix another possible 
bug, and I'd like to be sure I didn't break anything.

Regards,

  
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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Charlie Reinl]

Am Mittwoch, den 02.12.2009, 20:25 +1100 schrieb Tony:
 Hi Benoit,
I have muddled my way through the subversion bit, hopefully correctly and
compiled the 2454 version. When opening my application I get the error
message The program has stopped unexpectedly raising signal #11 with the
CPU at 100%. If I try to open the wrong ttyUSBx, the application flags this
error and behaves correctly, so I would assume that if the ttyUSBx opens OK
then the most recent Gambas2 changes have induced the signal #11 problem.
Can you please let me know how to debug further and assist you with your
efforts.
Thanks and regards,
Tony..
Benoît Minisini wrote:
 
Thanks Benoit and all for your speedy replies..
I'm using the serial port in a timing application with 3 laser through
  beam sensors feeding into the CTS, RI and DSR lines of the serial port. In
  this mode I don't pass any data, don't really care about flow control and
  am only interested in the raw status change events. Working this way I
  haven't noticed gross CPU utilisation after opening the port.  The
  application also uses the UDPsocket to communicate remotely and what I
  have noticed is that if the serial port does not open correctly e.g.
  /dev/tty wrong and the UDPsocket is open, then there is a large amount
  of CPU used. Both open correctly and CPU normal.
Can you tell me the polling frequency in Gambas2 2.8 ?
I would assume that there ore other users of Gambas2 who are using the
serial  port  as  a  convenient  way of passing external events to the
application, so maybe some input from them would also be in order. As
  long as there is a mechanism to replicate the Gambas2 2.8 functionality
  that I currently use, I'll leave the implementation up to those who know a
  lot more than myself. If going back to polling, a property to define the
  frequency would be nice.
Thanks again,
Tony.
 
 
 Can you try the revision #2454? I think I have found and fix another possible 
 bug, and I'd like to be sure I didn't break anything.
 
 Regards,

Salut Tony,

you will find how to work with gdb there :

go to http://gambas.sourceforge.net/en/main.html

click: Reporting a problem

read : 3. Reporting a crash (a segmentation fault, or a signal #11)


-- 
Amicalement
Charlie


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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Ron]

Benoît Minisini wrote:
 Am Mittwoch, den 02.12.2009, 20:25 +1100 schrieb Tony:
 
 Hi Benoit,
I have muddled my way through the subversion bit, hopefully correctly
 and compiled the 2454 version. When opening my application I get the
 error message The program has stopped unexpectedly raising signal #11
 with the CPU at 100%. If I try to open the wrong ttyUSBx, the application
 flags this error and behaves correctly, so I would assume that if the
 ttyUSBx opens OK then the most recent Gambas2 changes have induced the
 signal #11 problem. Can you please let me know how to debug further and
 assist you with your efforts.
Thanks and regards,
Tony..
Benoît Minisini wrote:

Thanks Benoit and all for your speedy replies..
I'm using the serial port in a timing application with 3 laser through
  beam sensors feeding into the CTS, RI and DSR lines of the serial port.
 In this mode I don't pass any data, don't really care about flow control
 and am only interested in the raw status change events. Working this way
 I haven't noticed gross CPU utilisation after opening the port.  The
 application also uses the UDPsocket to communicate remotely and what I
 have noticed is that if the serial port does not open correctly e.g.
 /dev/tty wrong and the UDPsocket is open, then there is a large amount
 of CPU used. Both open correctly and CPU normal.
Can you tell me the polling frequency in Gambas2 2.8 ?
I would assume that there ore other users of Gambas2 who are using the
serial  port  as  a  convenient  way of passing external events to the
application, so maybe some input from them would also be in order. As
  long as there is a mechanism to replicate the Gambas2 2.8 functionality
  that I currently use, I'll leave the implementation up to those who know
 a lot more than myself. If going back to polling, a property to define
 the frequency would be nice.
Thanks again,
Tony.


 Can you try the revision #2454? I think I have found and fix another
 possible bug, and I'd like to be sure I didn't break anything.

 Regards,
   
 Salut Tony,

 you will find how to work with gdb there :

 go to http://gambas.sourceforge.net/en/main.html

 click: Reporting a problem

 read : 3. Reporting a crash (a segmentation fault, or a signal #11)

 

 And another often more interesting way of debugging is using 'valgrind':

 $ cd /path/to/my/project
 $ valgrind --tool=memcheck --num-callers=50 gbx2
 ...

 And then you send me the output written by valgrind.

 Regards,

   
Benoît,

I updated to 2454 and have signal 11's too, right away while starting my 
program.

This is the bt:

Program received signal SIGSEGV, Segmentation fault.
GB_Raise (object=0x11, event_id=0, nparam=0) at gbx_api.c:528
528OBJECT_REF(object, GB_Raise);
(gdb) bt
#0  GB_Raise (object=0x11, event_id=0, nparam=0) at gbx_api.c:528
#1  0x00b99cd5 in CSerialPort_ReadCallBack (_object=0x11) at 
CSerialPort.c:175
#2  0x08060997 in raise_callback (wait=value optimized out) at 
gbx_watch.c:425
#3  do_loop (wait=value optimized out) at gbx_watch.c:498
#4  0x08060b04 in WATCH_loop () at gbx_watch.c:530
#5  0x08061b72 in main (argc=134739040, argv=0xb4e4) at gbx.c:358
(gdb)

I'm recompiling without optimizations at this moment, so better 
backtrace is coming...

I only have Flowcontrol = 0 in all of my serial port code.

Gambas 2.18.x
gb.qt
Ubuntu 9.10

Kind Regards,
Ron_2nd.


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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Ron]

Ron wrote:
 Benoît Minisini wrote:
 Am Mittwoch, den 02.12.2009, 20:25 +1100 schrieb Tony:

 Hi Benoit,
I have muddled my way through the subversion bit, hopefully 
 correctly
 and compiled the 2454 version. When opening my application I get the
 error message The program has stopped unexpectedly raising signal 
 #11
 with the CPU at 100%. If I try to open the wrong ttyUSBx, the 
 application
 flags this error and behaves correctly, so I would assume that if the
 ttyUSBx opens OK then the most recent Gambas2 changes have induced the
 signal #11 problem. Can you please let me know how to debug 
 further and
 assist you with your efforts.
Thanks and regards,
Tony..
Benoît Minisini wrote:

Thanks Benoit and all for your speedy replies..
I'm using the serial port in a timing application with 3 laser 
 through
  beam sensors feeding into the CTS, RI and DSR lines of the serial 
 port.
 In this mode I don't pass any data, don't really care about flow 
 control
 and am only interested in the raw status change events. Working 
 this way
 I haven't noticed gross CPU utilisation after opening the port.  The
 application also uses the UDPsocket to communicate remotely and what I
 have noticed is that if the serial port does not open correctly e.g.
 /dev/tty wrong and the UDPsocket is open, then there is a large 
 amount
 of CPU used. Both open correctly and CPU normal.
Can you tell me the polling frequency in Gambas2 2.8 ?
I would assume that there ore other users of Gambas2 who are 
 using the
serial  port  as  a  convenient  way of passing external events 
 to the
application, so maybe some input from them would also be in 
 order. As
  long as there is a mechanism to replicate the Gambas2 2.8 
 functionality
  that I currently use, I'll leave the implementation up to those 
 who know
 a lot more than myself. If going back to polling, a property to define
 the frequency would be nice.
Thanks again,
Tony.


 Can you try the revision #2454? I think I have found and fix another
 possible bug, and I'd like to be sure I didn't break anything.

 Regards,
   
 Salut Tony,

 you will find how to work with gdb there :

 go to http://gambas.sourceforge.net/en/main.html

 click: Reporting a problem

 read : 3. Reporting a crash (a segmentation fault, or a signal #11)

 

 And another often more interesting way of debugging is using 'valgrind':

 $ cd /path/to/my/project
 $ valgrind --tool=memcheck --num-callers=50 gbx2
 ...

 And then you send me the output written by valgrind.

 Regards,

   
 Benoît,

 I updated to 2454 and have signal 11's too, right away while starting 
 my program.

 This is the bt:

 Program received signal SIGSEGV, Segmentation fault.
 GB_Raise (object=0x11, event_id=0, nparam=0) at gbx_api.c:528
 528OBJECT_REF(object, GB_Raise);
 (gdb) bt
 #0  GB_Raise (object=0x11, event_id=0, nparam=0) at gbx_api.c:528
 #1  0x00b99cd5 in CSerialPort_ReadCallBack (_object=0x11) at 
 CSerialPort.c:175
 #2  0x08060997 in raise_callback (wait=value optimized out) at 
 gbx_watch.c:425
 #3  do_loop (wait=value optimized out) at gbx_watch.c:498
 #4  0x08060b04 in WATCH_loop () at gbx_watch.c:530
 #5  0x08061b72 in main (argc=134739040, argv=0xb4e4) at gbx.c:358
 (gdb)

 I'm recompiling without optimizations at this moment, so better 
 backtrace is coming...

 I only have Flowcontrol = 0 in all of my serial port code.

 Gambas 2.18.x
 gb.qt
 Ubuntu 9.10

 Kind Regards,
 Ron_2nd.


Hmm... recompiling complete Gambas source without optimization flag 
didn't result in a more verbose output, and I don't want to recompile 
libqt or things like that.

Regards,
Ron_2nd.

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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Tony]

   Benoit,
   Here is the output of valgrind as requested. I hope it helps.
   Regards,
   Tony..
   $ valgrind --tool=memcheck --num-callers=50 gbx2
   ==2404== Memcheck, a memory error detector
   ==2404== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.
   ==2404== Using Valgrind-3.5.0-Debian and LibVEX; rerun with -h for copyright
   info
   ==2404== Command: gbx2
   ==2404==
   /dev/ttyUSB0
   19200
   0
   8
   1
   1
   1
   ==2404== Invalid read of size 4
   ==2404==at 0x535C586: CSerialPort_CallBack (CSerialPort.c:120)
   ==2404==by 0x4663A21: CWatch::write(int) (CWatch.cpp:143)
   ==2404==   by0x4663885:CWatch::qt_invoke(int,   QUObject*)
   (CWatch_moc.cpp:91)
   ==2404== by  0x493C359: QObject::activate_signal(QConnectionList*,
   QUObject*) (in /usr/lib/libqt-mt.so.3.3.8)
   ==2404==  by  0x493E1E3:  QObject::activate_signal(int,  int)  (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404==   by   0x4C9BBFF:   QSocketNotifier::activated(int)   (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404==   by   0x495B166:   QSocketNotifier::event(QEvent*)   (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404==by 0x48D74B6: QApplication::internalNotify(QObject*, QEvent*)
   (in /usr/lib/libqt-mt.so.3.3.8)
   ==2404== by 0x48D842A: QApplication::notify(QObject*, QEvent*) (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404== by  0x463A5E2:  MyApplication::notify(QObject*,  QEvent*)
   (main.cpp:354)
   ==2404== by  0x48CC1E3:  QEventLoop::activateSocketNotifiers() (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404== by 0x488207D: QEventLoop::processEvents(unsigned int) (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404== by  0x463A70B:  MyEventLoop::processEvents(unsigned  int)
   (main.cpp:247)
   ==2404== by 0x48F04AF: QEventLoop::enterLoop() (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404==by 0x48F0355: QEventLoop::exec() (in /usr/lib/libqt-mt.so.3.3.8)
   ==2404== by  0x48D7B0E:  QApplication::exec()  (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404==by 0x4639D57: hook_loop() (main.cpp:542)
   ==2404==by 0x8061B71: main (gbx.c:358)
   ==2404==  Address 0x31 is not stack'd, malloc'd or (recently) free'd
   ==2404==
   ==2404==
   ==2404== Process terminating with default action of signal 11 (SIGSEGV)
   ==2404==  Access not within mapped region at address 0x31
   ==2404==at 0x535C586: CSerialPort_CallBack (CSerialPort.c:120)
   ==2404==by 0x4663A21: CWatch::write(int) (CWatch.cpp:143)
   ==2404==   by0x4663885:CWatch::qt_invoke(int,   QUObject*)
   (CWatch_moc.cpp:91)
   ==2404== by  0x493C359: QObject::activate_signal(QConnectionList*,
   QUObject*) (in /usr/lib/libqt-mt.so.3.3.8)
   ==2404==  by  0x493E1E3:  QObject::activate_signal(int,  int)  (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404==   by   0x4C9BBFF:   QSocketNotifier::activated(int)   (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404==   by   0x495B166:   QSocketNotifier::event(QEvent*)   (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404==by 0x48D74B6: QApplication::internalNotify(QObject*, QEvent*)
   (in /usr/lib/libqt-mt.so.3.3.8)
   ==2404== by 0x48D842A: QApplication::notify(QObject*, QEvent*) (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404== by  0x463A5E2:  MyApplication::notify(QObject*,  QEvent*)
   (main.cpp:354)
   ==2404== by  0x48CC1E3:  QEventLoop::activateSocketNotifiers() (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404== by 0x488207D: QEventLoop::processEvents(unsigned int) (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404== by  0x463A70B:  MyEventLoop::processEvents(unsigned  int)
   (main.cpp:247)
   ==2404== by 0x48F04AF: QEventLoop::enterLoop() (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404==by 0x48F0355: QEventLoop::exec() (in /usr/lib/libqt-mt.so.3.3.8)
   ==2404== by  0x48D7B0E:  QApplication::exec()  (in
   /usr/lib/libqt-mt.so.3.3.8)
   ==2404==by 0x4639D57: hook_loop() (main.cpp:542)
   ==2404==by 0x8061B71: main (gbx.c:358)
   ==2404==  If you believe this happened as a result of a stack
   ==2404==  overflow in your program's main thread (unlikely but
   ==2404==  possible), you can try to increase the size of the
   ==2404==  main thread stack using the --main-stacksize= flag.
   ==2404==  The main thread stack size used in this run was 8388608.
   ==2404==
   ==2404== HEAP SUMMARY:
   ==2404== in use at exit: 1,958,423 bytes in 15,402 blocks
   ==2404==   total heap usage: 102,525 allocs, 87,123 frees, 7,712,919 bytes
   allocated
   ==2404==
   ==2404== LEAK SUMMARY:
   ==2404==definitely lost: 6,916 bytes in 28 blocks
   ==2404==indirectly lost: 12,892 bytes in 633 blocks
   ==2404==  possibly lost: 175,810 bytes in 721 blocks
   ==2404==still reachable: 1,762,805 bytes in 14,020 blocks
   ==2404== suppressed: 0 bytes in 0 blocks
   ==2404== Rerun with --leak-check=full to see details of leaked memory
   ==2404==
   

[Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Tony]

Hi,

I have a Gambas2 application (gb.qt) checking for status change events 
on the CTS, RI and DSR signals (SerialPort-gb.net class) of a USB to 
serial converter (Prolific pl2303) which works fine on Ubuntu 9.04 
(Gambas2 2.8 and kernel 2.6.28-16-generic 32bit). After upgrade to 
Ubuntu 9.10 (Gambas2 2.13 and kernel 2.6.31-15-generic 32bit) the status 
changes are no longer working. The serial port opens without error but 
no status change events are flagged. The problem is also evident in the 
serial port example on Ubuntu 9.10.

I have compiled Gambas2 2.18 onto Ubuntu 9.04 but it still fails so my 
guess is that somewhere between Gambas2 2.8 and 2.13 this functionality 
stopped working.

Any assistance would be appreciated, thanks..

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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Ricardo Díaz Martín]

Tony,

Try to compile gambas2 again. I got similar problem with apps after upgrade
ubuntu from 9.04 yo 9.10 and it was necessary to do this:

sudo apt-get install build-essential autoconf libbz2-dev libfbclient2
libmysqlclient15-dev unixodbc-dev libpq-dev libsqlite0-dev
libsqlite3-dev libgtk2.0-dev libldap2-dev libcurl4-gnutls-dev
libgtkglext1-dev libpcre3-dev libsdl-sound1.2-dev libsdl-mixer1.2-dev
libsdl-image1.2-dev libsage-dev libxml2-dev libxslt1-dev
libbonobo2-dev libcos4-dev libomniorb4-dev librsvg2-dev libpoppler-dev
libpoppler-glib-dev libasound2-dev libesd0-dev libesd-alsa0
libdirectfb-dev libaa1-dev libxtst-dev libffi-dev kdelibs4-dev
firebird2.1-dev libqt4-dev

and after I downloaded gambas from source and compile again.

Hope this works for you.

Regards,
Ricardo Díaz

2009/12/1 Tony ajw...@optusnet.com.au

 Hi,

 I have a Gambas2 application (gb.qt) checking for status change events
 on the CTS, RI and DSR signals (SerialPort-gb.net class) of a USB to
 serial converter (Prolific pl2303) which works fine on Ubuntu 9.04
 (Gambas2 2.8 and kernel 2.6.28-16-generic 32bit). After upgrade to
 Ubuntu 9.10 (Gambas2 2.13 and kernel 2.6.31-15-generic 32bit) the status
 changes are no longer working. The serial port opens without error but
 no status change events are flagged. The problem is also evident in the
 serial port example on Ubuntu 9.10.

 I have compiled Gambas2 2.18 onto Ubuntu 9.04 but it still fails so my
 guess is that somewhere between Gambas2 2.8 and 2.13 this functionality
 stopped working.

 Any assistance would be appreciated, thanks..


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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Tony]

   Thanks for the suggestion Ricardo.
   I have already compiled G2.18 from source onto Ubuntu 9.04. The application
   was working fine on Ubuntu 9.04 with G2.8 but fails with G2.18, so this
   makes  me think that there is a problem which may have been introduced
   between G2.8 and G2.13 (the binary on Ubuntu 9.10 which doesn't work).
   Regards,
   Tony..
   Ricardo Díaz Martín wrote:

Tony,

Try to compile gambas2 again. I got similar problem with apps after upgrade
ubuntu from 9.04 yo 9.10 and it was necessary to do this:

sudo apt-get install build-essential autoconf libbz2-dev libfbclient2
libmysqlclient15-dev unixodbc-dev libpq-dev libsqlite0-dev
libsqlite3-dev libgtk2.0-dev libldap2-dev libcurl4-gnutls-dev
libgtkglext1-dev libpcre3-dev libsdl-sound1.2-dev libsdl-mixer1.2-dev
libsdl-image1.2-dev libsage-dev libxml2-dev libxslt1-dev
libbonobo2-dev libcos4-dev libomniorb4-dev librsvg2-dev libpoppler-dev
libpoppler-glib-dev libasound2-dev libesd0-dev libesd-alsa0
libdirectfb-dev libaa1-dev libxtst-dev libffi-dev kdelibs4-dev
firebird2.1-dev libqt4-dev

and after I downloaded gambas from source and compile again.

Hope this works for you.

Regards,
Ricardo Díaz

2009/12/1 Tony [1]ajw...@optusnet.com.au



Hi,

I have a Gambas2 application (gb.qt) checking for status change events
on the CTS, RI and DSR signals (SerialPort-gb.net class) of a USB to
serial converter (Prolific pl2303) which works fine on Ubuntu 9.04
(Gambas2 2.8 and kernel 2.6.28-16-generic 32bit). After upgrade to
Ubuntu 9.10 (Gambas2 2.13 and kernel 2.6.31-15-generic 32bit) the status
changes are no longer working. The serial port opens without error but
no status change events are flagged. The problem is also evident in the
serial port example on Ubuntu 9.10.

I have compiled Gambas2 2.18 onto Ubuntu 9.04 but it still fails so my
guess is that somewhere between Gambas2 2.8 and 2.13 this functionality
stopped working.

Any assistance would be appreciated, thanks..


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References

   1. mailto:ajw...@optusnet.com.au
   2. http://p.sf.net/sfu/redhat-sfdev2dev
   3. mailto:Gambas-user@lists.sourceforge.net
   4. https://lists.sourceforge.net/lists/listinfo/gambas-user
   5. http://p.sf.net/sfu/redhat-sfdev2dev
   6. mailto:Gambas-user@lists.sourceforge.net
   7. https://lists.sourceforge.net/lists/listinfo/gambas-user
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Re: [Gambas-user] Serial Port Change Events Not Working aft er Upgrade to Karmic

[Benoît Minisini]

Thanks for the suggestion Ricardo.
I have already compiled G2.18 from source onto Ubuntu 9.04. The
  application was working fine on Ubuntu 9.04 with G2.8 but fails with
  G2.18, so this makes  me think that there is a problem which may have been
  introduced between G2.8 and G2.13 (the binary on Ubuntu 9.10 which doesn't
  work). Regards,
Tony..

You are right, and I think I understand what happens:

I have noticed that SerialPort callback took too much CPU, because it was 
using polling on the serial port file descriptor. 

So I fixed it by awaken it only when there is some data to read... Mistake! 

I didn't understand that all DTRChange, DSRChange... events are not detected 
by the kernel. So Daniel (who wrote the code) had to use polling to be able to 
detect the changes.

By removing the polling, I was able to raise the Read event without burning 
CPU, but all *Change events were not raised anymore!

Now I have to find a good fix, but I have never used a serial port, so I need 
some enlightenment (no, I won't run E17...)

- Why do you need detecting DTR,DSR... changes?
- How are these events related to flow control and the FlowControl property?

The last question is not innocent. the FlowControl property takes three 
different values: Hardware, Software, Both. 

I'm thinking adding a fourth value, None, that means the user does not care. 
In that specific case, I will not poll, and *Change events won't be raised.

So you will be able to decide:

- Setting FlowControl to None. You will get the Read event only, but you won't 
burn CPU power.

- Setting FlowControl to any other value. You will get all events, but you 
will have to poll.

This change would be compatible with the current SerialPort interface.

Otherwise, for Gambas 3, maybe I will add a new property to define how much 
polling is needed.

What do serial port people think about that?

-- 
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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Tony]

   Thanks Benoit and all for your speedy replies..
   I'm using the serial port in a timing application with 3 laser through beam
   sensors feeding into the CTS, RI and DSR lines of the serial port. In this
   mode I don't pass any data, don't really care about flow control and am only
   interested in the raw status change events. Working this way I haven't
   noticed gross CPU utilisation after opening the port.  The application also
   uses the UDPsocket to communicate remotely and what I have noticed is that
   if the serial port does not open correctly e.g. /dev/tty wrong and the
   UDPsocket is open, then there is a large amount of CPU used. Both open
   correctly and CPU normal.
   Can you tell me the polling frequency in Gambas2 2.8 ?
   I would assume that there ore other users of Gambas2 who are using the
   serial  port  as  a  convenient  way of passing external events to the
   application, so maybe some input from them would also be in order. As long
   as there is a mechanism to replicate the Gambas2 2.8 functionality that I
   currently use, I'll leave the implementation up to those who know a lot more
   than myself. If going back to polling, a property to define the frequency
   would be nice.
   Thanks again,
   Tony.
   Benoît Minisini wrote:

   Thanks for the suggestion Ricardo.
   I have already compiled G2.18 from source onto Ubuntu 9.04. The
 application was working fine on Ubuntu 9.04 with G2.8 but fails with
 G2.18, so this makes  me think that there is a problem which may have been
 introduced between G2.8 and G2.13 (the binary on Ubuntu 9.10 which doesn't
 work). Regards,
   Tony..


You are right, and I think I understand what happens:

I have noticed that SerialPort callback took too much CPU, because it was 
using polling on the serial port file descriptor. 

So I fixed it by awaken it only when there is some data to read... Mistake! 

I didn't understand that all DTRChange, DSRChange... events are not detected 
by the kernel. So Daniel (who wrote the code) had to use polling to be able to 
detect the changes.

By removing the polling, I was able to raise the Read event without burning 
CPU, but all *Change events were not raised anymore!

Now I have to find a good fix, but I have never used a serial port, so I need 
some enlightenment (no, I won't run E17...)

- Why do you need detecting DTR,DSR... changes?
- How are these events related to flow control and the FlowControl property?

The last question is not innocent. the FlowControl property takes three 
different values: Hardware, Software, Both. 

I'm thinking adding a fourth value, None, that means the user does not care. 
In that specific case, I will not poll, and *Change events won't be raised.

So you will be able to decide:

- Setting FlowControl to None. You will get the Read event only, but you won't 
burn CPU power.

- Setting FlowControl to any other value. You will get all events, but you 
will have to poll.

This change would be compatible with the current SerialPort interface.

Otherwise, for Gambas 3, maybe I will add a new property to define how much 
polling is needed.

What do serial port people think about that?

  
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Re: [Gambas-user] Serial Port Change Events Not Working after Upgrade to Karmic

[Benoît Minisini]

Thanks Benoit and all for your speedy replies..
I'm using the serial port in a timing application with 3 laser through
  beam sensors feeding into the CTS, RI and DSR lines of the serial port. In
  this mode I don't pass any data, don't really care about flow control and
  am only interested in the raw status change events. Working this way I
  haven't noticed gross CPU utilisation after opening the port.  The
  application also uses the UDPsocket to communicate remotely and what I
  have noticed is that if the serial port does not open correctly e.g.
  /dev/tty wrong and the UDPsocket is open, then there is a large amount
  of CPU used. Both open correctly and CPU normal.
Can you tell me the polling frequency in Gambas2 2.8 ?
I would assume that there ore other users of Gambas2 who are using the
serial  port  as  a  convenient  way of passing external events to the
application, so maybe some input from them would also be in order. As
  long as there is a mechanism to replicate the Gambas2 2.8 functionality
  that I currently use, I'll leave the implementation up to those who know a
  lot more than myself. If going back to polling, a property to define the
  frequency would be nice.
Thanks again,
Tony.

Can you try the revision #2454? I think I have found and fix another possible 
bug, and I'd like to be sure I didn't break anything.

Regards,

-- 
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Re: [Gambas-user] serial port.

[abdurrahman ulusoy]

Thanks.

--- 19/10/09 Pzt tarihinde nando nand...@nothingsimple.com şöyle yazıyor:

Kimden: nando nand...@nothingsimple.com
Konu: Re: [Gambas-user] serial port.
Kime: mailing list for gambas users gambas-user@lists.sourceforge.net
Tarihi: 19 Ekim 2009 Pazartesi, 18:23

If you want to send a binary 37 to serial port Sport,
 then you can do any of these:

1. Print #Sport, %;

2. Print #Sport, Chr$(37);

3. S=Chr$(37)
   Write #Sport, S, 1

You do not have to 'convert' to binary.

-Fernando




-- Original Message ---
From: abdurrahman ulusoy uluso...@yahoo.com
To: mailing list for gambas users gambas-user@lists.sourceforge.net
Sent: Sun, 18 Oct 2009 09:57:25 -0700 (PDT)
Subject: [Gambas-user] serial port.

 hi i want to send data to serial port.  when i send  a number  (for exam: 37)
  ,  what is writing gambas to seri port (100101 or 37) ? if gambas  write (37)
  how can i convert decimaltobinary. (are there any module or command  ?  
 
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[Gambas-user] serial port.

[abdurrahman ulusoy]

hi i want to send data to serial port.  when i send  a number  (for exam: 37) , 
 what is writing gambas to seri port (100101 or 37) ?
if gambas  write (37) how can i convert decimaltobinary. (are there any module 
or command  ?  


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Re: [Gambas-user] serial port

[Benoît Minisini]

 Salut,
 
 I tried to follow what you wrote, here you are the result.
 
 From the other side when working on it and waiting for a little longer
  time,
 
 I recognised that the program is not permanently frozen, after several 10
 seconds it came back to normal. So at the end it's not so serious as
 expected.
 
 Regards, Robi

So the 10 seconds freeze is during the close() system call. But I don't know 
how Linux handle serial ports well enough to understand why there is such a 
freeze. Maybe a deep google search could bring up some information about that?

-- 
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Re: [Gambas-user] serial port

[Robert JUHASZ]

Hello,

At the end it works almost fine to try to open the serial port and if no
error I suppose that it works.
Now I try to use it. I do the same for ttyS0..S9.

On the ttyS0 it finds the serial port correctly, on the S1, S3-S9 it finds
out that there is no serial port.
On the ttyS2 it finds something (no error when I open). I don't know what it
is and no idea how to find out.

For those where I found the port, I ask for the equipment ID to identify if
it's there or not. OK for the S0, but the ttyS2 completely freeze and when I
try to close the port there is no reaction.

In such a case (TRY mySerialPort.close --- no response, no error message but
the program frozen) is there any way to stop the process with a timeout or
does anyone has an ide ho to handle it?

Any help would be appreciated.

Robi

2009/9/28 Robert JUHASZ robert1juh...@gmail.com

 thanks a lot !!!

 2009/9/28 Werner wd...@netfront.net

  Robert JUHASZ wrote:
  Hello,
 
  One more question to the same project.
  It is a measurement program where the user can give equations for
 calculated
  quantities. Is there an easy way in Gambas to execute them? For example
 if I
  have a string (formula) of 2*3+6*(4-1) how can I calculate the result?
 
  Thanks, Robi
 
 with Eval

 Regards
 Werner

 PS: It is better to start a new thread for a new question.


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Re: [Gambas-user] serial port

[Benoît Minisini]

 Hello,
 
 At the end it works almost fine to try to open the serial port and if no
 error I suppose that it works.
 Now I try to use it. I do the same for ttyS0..S9.
 
 On the ttyS0 it finds the serial port correctly, on the S1, S3-S9 it finds
 out that there is no serial port.
 On the ttyS2 it finds something (no error when I open). I don't know what
  it is and no idea how to find out.
 
 For those where I found the port, I ask for the equipment ID to identify if
 it's there or not. OK for the S0, but the ttyS2 completely freeze and when
  I try to close the port there is no reaction.
 
 In such a case (TRY mySerialPort.close --- no response, no error message
  but the program frozen) is there any way to stop the process with a
  timeout or does anyone has an ide ho to handle it?
 
 Any help would be appreciated.
 
 Robi
 

Apparently when closing a serial port, the gb.net component does not just call 
the close() system call.

Can you break the frozen program with gdb and see where it is locked?

$ gdb /usr/bin/gbx2 pid of frozen program
...
(gdb) bt
...

Send me the result of the 'bt' command.

Regards,

-- 
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Re: [Gambas-user] serial port

[Robert JUHASZ]

Salut,

I tried to follow what you wrote, here you are the result.
From the other side when working on it and waiting for a little longer time,
I recognised that the program is not permanently frozen, after several 10
seconds it came back to normal. So at the end it's not so serious as
expected.

Regards, Robi
--
(gdb) bt
#0  0xb7fe8430 in __kernel_vsyscall ()
#1  0xb786514c in __close_nocancel () from
/lib/tls/i686/cmov/libpthread.so.0
#2  0xb691de2e in CloseSerialPort (fd=18, oldtio=0xa3037b8) at tools.c:353
#3  0xb6922850 in CSerialPort_stream_close (stream=0xa303718)
at CSerialPort.c:261
#4  0x0805529d in STREAM_close (stream=0xa303718) at gbx_stream.c:180
#5  0x0804e8b0 in EXEC_call_native (exec=0x8065c73 CSTREAM_close,
object=0xa303710, type=0, param=0x9f1d338) at gbx_exec.c:844
#6  0x0804f179 in EXEC_native () at gbx_exec.c:962
#7  0x0806bc90 in EXEC_loop () at gbx_exec_loop.c:1042
#8  0x0804f487 in EXEC_function_loop () at gbx_exec.c:703
#9  0x0804f75d in EXEC_function_real () at gbx_exec.c:690
#10 0x0805d5ef in raise_event (observer=value optimized out,
object=0xa274c10, func_id=value optimized out, nparam=0) at
gbx_api.c:490
#11 0x0805db45 in GB_Raise (object=0xa274c10, event_id=16, nparam=0)
at gbx_api.c:594
#12 0xb726fa38 in gb_raise_button_Click (sender=0xa289ed8) at CButton.cpp:44
#13 0xb724e15e in gControl::emit (this=0x0, signal=0xb6924ff4)
at gcontrol.cpp:1482
#14 0xb72535af in bt_click (object=0xa259c88, data=0xa289ed8) at
gbutton.cpp:58
#15 0xb6c193a4 in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
#16 0xb6c0bc7b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
---Type return to continue, or q return to quit---
#17 0xb6c21e57 in ?? () from /usr/lib/libgobject-2.0.so.0
#18 0xb6c234b9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#19 0xb6c23936 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#20 0xb6edcbda in gtk_button_clicked () from /usr/lib/libgtk-x11-2.0.so.0
#21 0xb6ede1f8 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#22 0xb6c193a4 in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
#23 0xb6c0a3d9 in ?? () from /usr/lib/libgobject-2.0.so.0
#24 0xb6c0bc7b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#25 0xb6c216c0 in ?? () from /usr/lib/libgobject-2.0.so.0
#26 0xb6c234b9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#27 0xb6c23936 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#28 0xb6edcc7a in gtk_button_released () from /usr/lib/libgtk-x11-2.0.so.0
#29 0xb6edccb3 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#30 0xb6f97526 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#31 0xb6c0a3d9 in ?? () from /usr/lib/libgobject-2.0.so.0
#32 0xb6c0bc7b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#33 0xb6c21aff in ?? () from /usr/lib/libgobject-2.0.so.0
#34 0xb6c2334f in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#35 0xb6c23936 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#36 0xb70b22ae in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#37 0xb6f8ff7c in gtk_propagate_event () from /usr/lib/libgtk-x11-2.0.so.0
#38 0xb6f91327 in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
-

2009/10/13 Benoît Minisini gam...@users.sourceforge.net

  Hello,
 
  At the end it works almost fine to try to open the serial port and if no
  error I suppose that it works.
  Now I try to use it. I do the same for ttyS0..S9.
 
  On the ttyS0 it finds the serial port correctly, on the S1, S3-S9 it
 finds
  out that there is no serial port.
  On the ttyS2 it finds something (no error when I open). I don't know what
   it is and no idea how to find out.
 
  For those where I found the port, I ask for the equipment ID to identify
 if
  it's there or not. OK for the S0, but the ttyS2 completely freeze and
 when
   I try to close the port there is no reaction.
 
  In such a case (TRY mySerialPort.close --- no response, no error message
   but the program frozen) is there any way to stop the process with a
   timeout or does anyone has an ide ho to handle it?
 
  Any help would be appreciated.
 
  Robi
 

 Apparently when closing a serial port, the gb.net component does not just
 call
 the close() system call.

 Can you break the frozen program with gdb and see where it is locked?

 $ gdb /usr/bin/gbx2 pid of frozen program
 ...
 (gdb) bt
 ...

 Send me the result of the 'bt' command.

 Regards,

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Re: [Gambas-user] serial port

[Robert JUHASZ]

Hello,

One more question to the same project.
It is a measurement program where the user can give equations for calculated
quantities. Is there an easy way in Gambas to execute them? For example if I
have a string (formula) of 2*3+6*(4-1) how can I calculate the result?

Thanks, Robi

2009/9/21 Mike mike.cr...@westnet.com.au

  Robert JUHASZ wrote:
  Useful info, I'll do like that.
  Thanks, Robi
 
  2009/9/19 nando nand...@nothingsimple.com
 
 
  In my Linux serial port experience, serial port devices are named:
 
  /dev/ttyS0..9 and upwards
  /dev/ttyUSB0..9 and upwards depending on what is plugged in USB.
 
  I have done a lot of serial port stuff with Gambas.
 
  I know that trying to open then with the serial port control
  will fail is non-exising port. This error can be detected.
 
  It can be possible to open a port as a test to see if it exists, but you
  may be changing parameters and stealing chars from an existing
 connection.
  I've had this happen tooreally messes things up.
 
  -Fernando
 
 
  -- Original Message ---
  From: yuhej robert1juh...@gmail.com
  To: gambas-user@lists.sourceforge.net
  Sent: Fri, 18 Sep 2009 21:08:04 -0700 (PDT)
  Subject: [Gambas-user]  serial port
 
 
  Hello,
 
  I can see that Gambas can handle the serial ports which is a very good
 
  news
 
  for me.
  Can someone tell me how can I get the list of the serial ports of my
  computer? I wish to make an autodetect function and only allow to
 select
  from the working serial ports.
 
  Robi
  --
  View this message in context:
 
  http://www.nabble.com/serial-port-tp25518421p25518421.html
 
  Sent from the gambas-user mailing list archive at Nabble.com.
 
 
 
 
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  ahead of the curve. Join us from November 9#45;12, 2009. Register
 
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 Is the list up.

 Mike


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Re: [Gambas-user] serial port

[Werner]

Robert JUHASZ wrote:
 Hello,

 One more question to the same project.
 It is a measurement program where the user can give equations for calculated
 quantities. Is there an easy way in Gambas to execute them? For example if I
 have a string (formula) of 2*3+6*(4-1) how can I calculate the result?

 Thanks, Robi
   
with Eval

Regards
Werner

PS: It is better to start a new thread for a new question.

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Re: [Gambas-user] serial port

[Mike]

Robert JUHASZ wrote:
 Useful info, I'll do like that.
 Thanks, Robi

 2009/9/19 nando nand...@nothingsimple.com

   
 In my Linux serial port experience, serial port devices are named:

 /dev/ttyS0..9 and upwards
 /dev/ttyUSB0..9 and upwards depending on what is plugged in USB.

 I have done a lot of serial port stuff with Gambas.

 I know that trying to open then with the serial port control
 will fail is non-exising port. This error can be detected.

 It can be possible to open a port as a test to see if it exists, but you
 may be changing parameters and stealing chars from an existing connection.
 I've had this happen tooreally messes things up.

 -Fernando


 -- Original Message ---
 From: yuhej robert1juh...@gmail.com
 To: gambas-user@lists.sourceforge.net
 Sent: Fri, 18 Sep 2009 21:08:04 -0700 (PDT)
 Subject: [Gambas-user]  serial port

 
 Hello,

 I can see that Gambas can handle the serial ports which is a very good
   
 news
 
 for me.
 Can someone tell me how can I get the list of the serial ports of my
 computer? I wish to make an autodetect function and only allow to select
 from the working serial ports.

 Robi
 --
 View this message in context:
   
 http://www.nabble.com/serial-port-tp25518421p25518421.html
 
 Sent from the gambas-user mailing list archive at Nabble.com.


   
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 ahead of the curve. Join us from November 9#45;12, 2009. Register
   
 now#33;
 
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Is the list up.

Mike

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Re: [Gambas-user] serial port

[Robert JUHASZ]

Useful info, I'll do like that.
Thanks, Robi

2009/9/19 nando nand...@nothingsimple.com

 In my Linux serial port experience, serial port devices are named:

 /dev/ttyS0..9 and upwards
 /dev/ttyUSB0..9 and upwards depending on what is plugged in USB.

 I have done a lot of serial port stuff with Gambas.

 I know that trying to open then with the serial port control
 will fail is non-exising port. This error can be detected.

 It can be possible to open a port as a test to see if it exists, but you
 may be changing parameters and stealing chars from an existing connection.
 I've had this happen tooreally messes things up.

 -Fernando


 -- Original Message ---
 From: yuhej robert1juh...@gmail.com
 To: gambas-user@lists.sourceforge.net
 Sent: Fri, 18 Sep 2009 21:08:04 -0700 (PDT)
 Subject: [Gambas-user]  serial port

  Hello,
 
  I can see that Gambas can handle the serial ports which is a very good
 news
  for me.
  Can someone tell me how can I get the list of the serial ports of my
  computer? I wish to make an autodetect function and only allow to select
  from the working serial ports.
 
  Robi
  --
  View this message in context:
 http://www.nabble.com/serial-port-tp25518421p25518421.html
  Sent from the gambas-user mailing list archive at Nabble.com.
 
 
 --
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  is the only developer event you need to attend this year. Jumpstart your
  developing skills, take BlackBerry mobile applications to market and stay
  ahead of the curve. Join us from November 9#45;12, 2009. Register
 now#33;
  http://p.sf.net/sfu/devconf
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Re: [Gambas-user] serial port

[Mike]

Robert JUHASZ wrote:
 Useful info, I'll do like that.
 Thanks, Robi

 2009/9/19 nando nand...@nothingsimple.com

   
 In my Linux serial port experience, serial port devices are named:

 /dev/ttyS0..9 and upwards
 /dev/ttyUSB0..9 and upwards depending on what is plugged in USB.

 I have done a lot of serial port stuff with Gambas.

 I know that trying to open then with the serial port control
 will fail is non-exising port. This error can be detected.

 It can be possible to open a port as a test to see if it exists, but you
 may be changing parameters and stealing chars from an existing connection.
 I've had this happen tooreally messes things up.

 -Fernando


 -- Original Message ---
 From: yuhej robert1juh...@gmail.com
 To: gambas-user@lists.sourceforge.net
 Sent: Fri, 18 Sep 2009 21:08:04 -0700 (PDT)
 Subject: [Gambas-user]  serial port

 
 Hello,

 I can see that Gambas can handle the serial ports which is a very good
   
 news
 
 for me.
 Can someone tell me how can I get the list of the serial ports of my
 computer? I wish to make an autodetect function and only allow to select
 from the working serial ports.

 Robi
 --
 View this message in context:
   
 http://www.nabble.com/serial-port-tp25518421p25518421.html
 
 Sent from the gambas-user mailing list archive at Nabble.com.


   
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 is the only developer event you need to attend this year. Jumpstart your
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 ahead of the curve. Join us from November 9#45;12, 2009. Register
   
 now#33;
 
 http://p.sf.net/sfu/devconf
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Hi, try the code below, I have no problems with the serial port.

PRIVATE Sport AS SerialPort
CONST None AS Integer = 0
PRIVATE Rx AS String

PUBLIC SUB Form_Open()
  Sport = NEW SerialPort AS Sport
  Sport.PortName = /dev/ttyUSB0
  Sport.Speed = 19200
  Sport.Parity = 0
  Sport.DataBits = 8
  Sport.StopBits = 1
  Sport.FlowControl = 0 

  TRY
Sport.Open()
 
  IF ERROR THEN
TRY Sport.PortName = /dev/ttyS0
  Sport.Speed = 19200
  Sport.Parity = 0
  Sport.DataBits = 8
  Sport.StopBits = 1
  Sport.FlowControl = 0
  Sport.Open()
IF ERROR THEN
  Message( Onboard Uart Comm 1 not found -- PROGRAM TERMINATING)
  QUIT
ENDIF
 ENDIF
 
END

' Get RS232 data 

PUBLIC SUB Sport_Read()
  SLEEP 0.025

  TRY READ #Sport, Rx, Lof(Sport)
 
  IF ERROR THEN
GOTO NoRx
  ENDIF
 
  IF Len(Rx)  8 THEN
ListBox1.Add(Rx)
  END IF

NoRx:

  Rx = 
 
END

PUBLIC SUB Form_Close()
  Sport.Close()
  QUIT 
END

Regards
Mike


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Re: [Gambas-user] serial port

[nando]

In my Linux serial port experience, serial port devices are named:

/dev/ttyS0..9 and upwards
/dev/ttyUSB0..9 and upwards depending on what is plugged in USB.

I have done a lot of serial port stuff with Gambas.

I know that trying to open then with the serial port control
will fail is non-exising port. This error can be detected.

It can be possible to open a port as a test to see if it exists, but you
may be changing parameters and stealing chars from an existing connection.
I've had this happen tooreally messes things up.

-Fernando


-- Original Message ---
From: yuhej robert1juh...@gmail.com
To: gambas-user@lists.sourceforge.net
Sent: Fri, 18 Sep 2009 21:08:04 -0700 (PDT)
Subject: [Gambas-user]  serial port

 Hello,
 
 I can see that Gambas can handle the serial ports which is a very good news
 for me.
 Can someone tell me how can I get the list of the serial ports of my
 computer? I wish to make an autodetect function and only allow to select
 from the working serial ports.
 
 Robi
 -- 
 View this message in context: 
 http://www.nabble.com/serial-port-tp25518421p25518421.html
 Sent from the gambas-user mailing list archive at Nabble.com.
 
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[Gambas-user] serial port

[yuhej]

Hello,

I can see that Gambas can handle the serial ports which is a very good news
for me.
Can someone tell me how can I get the list of the serial ports of my
computer? I wish to make an autodetect function and only allow to select
from the working serial ports.

Robi
-- 
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http://www.nabble.com/serial-port-tp25518421p25518421.html
Sent from the gambas-user mailing list archive at Nabble.com.


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Re: [Gambas-user] serial port

[Lee McPherson]

yuhej wrote:
 I can see that Gambas can handle the serial ports which is a very good news
 for me.
 Can someone tell me how can I get the list of the serial ports of my
 computer? I wish to make an autodetect function and only allow to select
 from the working serial ports.

 Robi
   
I think you want /dev/ttyS0, ttyS1, etc...
Also, I don't have a serial port on my laptop, but my USB to serial 
converter creates a device called /dev/ttyUSB0.  All these devices are 
present on my system (Ubuntu latest), but I have no idea how to check if 
they are valid.  Obviously, sending data to /dev/ttyS0 would do nothing 
on my laptop.

You could setup handshaking routines to check and see if there's a 
device that can respond on all of those devices.  Your device would have 
to be able to do hardware or software handshaking though.  Other than 
that, it's out of my league.

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