Re: [beagleboard] Changing cape from CAN to RS232

2013-10-04 Thread stephane . juillot
I've noticed that. Easy to do and works fine. Thanks again for your help. Stéphane Le jeudi 3 octobre 2013 19:39:06 UTC+2, Jesper We a écrit : > > Sorry, I forgot to mention that :-( > > There are two ENORMOUS test points, TP1 and TP2. Put a piece of wire > between them and the EEPROM is unlocked

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-03 Thread Jesper We
Sorry, I forgot to mention that :-( There are two ENORMOUS test points, TP1 and TP2. Put a piece of wire between them and the EEPROM is unlocked for writing. /jesper On Thursday, October 3, 2013 6:28:30 PM UTC+2, stephane...@gmail.com wrote: > > Shame on me... I missed that. > I will cut the po

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-03 Thread stephane . juillot
Shame on me... I missed that. I will cut the power to that pin and try again tomorrow. Thanks for your help. Stéphane Le jeudi 3 octobre 2013 18:20:20 UTC+2, garyamort a écrit : > > > > On Thursday, October 3, 2013 8:09:02 AM UTC-4, stephane...@gmail.comwrote: >> >> Hello, >> >> I had the same nee

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-03 Thread garyamort
On Thursday, October 3, 2013 8:09:02 AM UTC-4, stephane...@gmail.com wrote: > > Hello, > > I had the same need and try to change my RS485 cape into a 232 one on my > BB White. > I have the folowing issue : > the command cp eeprom.new /sys/bus/i2c/devices/3-0054/eeprom failed due > to connexion

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-03 Thread stephane . juillot
Hello, I had the same need and try to change my RS485 cape into a 232 one on my BB White. I have the folowing issue : the command cp eeprom.new /sys/bus/i2c/devices/3-0054/eeprom failed due to connexion timeout. When trying some commands with i2ctools, the ressource device seems to be busy. A

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-02 Thread Jesper We
Sure, here it goes: First of all, the CANBUS, ProfiBUS, RS232 and RS485 capes from Beagleboardtoys all share the same PCB. It's just different components mounted, and different jumpers configured. So what I did to the hardware was to unmount the 5 jumpers connecting the CANBUS chips to the UART

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-02 Thread garyamort
On Wednesday, October 2, 2013 3:57:48 AM UTC-4, Jesper We wrote: > > Thank you Gary, brilliant! > That made it simple to alter the partnumber and get the correct dts loaded: > > (I didn't bother to change the board name :-) ) > Ah, so you were able to edit the eeprom through a sys file then? A

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-02 Thread Jesper We
Thank you Gary, brilliant! That made it simple to alter the partnumber and get the correct dts loaded: (I didn't bother to change the board name :-) ) ... bone_capemgr.8: slot #0: 'BeagleBone CANBUS CAPE,00A0,Beagleboardtoys,BB-UART1' ... bone_capemgr.8: loader: after slot-0 BB-UART1:00A0 (prio

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-01 Thread garyamort
On Tuesday, October 1, 2013 8:24:10 PM UTC-4, lazarman wrote: > > Maxim > > You must have some magic Hexedit that writes I2C . Very nice (-: how does > that work? > You use one of the Linux I2C EEPROM drivers to access the EEPROM like a file. I don't have any capes, but it is quite possible

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-01 Thread Mark Lazarewicz
Maxim You must have some magic Hexedit that writes I2C . Very nice (-: how does that work? From: Maxim Podbereznyy To: beagleboard Sent: Tuesday, October 1, 2013 3:13 PM Subject: Re: [beagleboard] Changing cape from CAN to RS232 > utility to write

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-01 Thread Jesper We
Please try to understand the question before responding :-) Hexedit is a fine tool for editing binary files on your hard disk, but it has no knowledge what so ever of I2C bus communication or EEPROMs On Tuesday, October 1, 2013 9:13:22 PM UTC+2, lisarden wrote: > > > utility to write to the c

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-01 Thread Maxim Podbereznyy
> utility to write to the cape EEPROM? hexedit works for me just fine 2013/10/1 Jesper We > Several reasons, but please, this is not the topic of this post. I would > prefer getting responses to my questions... > > > On Tuesday, October 1, 2013 5:05:41 PM UTC+2, liyaoshi wrote: >> >> If you nee

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-01 Thread Jesper We
Several reasons, but please, this is not the topic of this post. I would prefer getting responses to my questions... On Tuesday, October 1, 2013 5:05:41 PM UTC+2, liyaoshi wrote: > > If you need RS232 , what my first choise is USB convert . since you need > some chip convert from UART to RS232 ,

Re: [beagleboard] Changing cape from CAN to RS232

2013-10-01 Thread liyaoshi
If you need RS232 , what my first choise is USB convert . since you need some chip convert from UART to RS232 , why not use USB ? Maybe you can consider it 2013/10/1 Jesper We > I needed a couple of RS232 ports for my BBB. However there seems to be a > shortage of RS232 capes in the world, Far

[beagleboard] Changing cape from CAN to RS232

2013-10-01 Thread Jesper We
I needed a couple of RS232 ports for my BBB. However there seems to be a shortage of RS232 capes in the world, Farnell is quoting over a month delivery time. But they had CAN-BUS capes in stock, and that's the same PCB. So I got a couple of CAN-BUS cards and made the following modification: Mov