Hi,
I suppose the USART is multiplexed between the radio and the SPI so
connecting it won't be a problem, you will need to acquire the bus though
using the proper arbiter before calling SPI functions. Another way can be to
use the I2C pins on the header and using a I2C to SPI converter (it is
Janos,
thanks for your quick answer.
The sensor board MTS420 use the UART1 of mica bus, therefore it isn't possible
to switch to UART0 of mica bus. At tinyOS 1.x it works with UART1 well.
I'm not sure what you mean with
USART1 is used by the radio (in SPI mode)
I thought the communication
Hi,
try looking past messages from this list or googling it. In a quick search I
found the following threads that might help you. When I used it was
something like that.
http://mail.millennium.berkeley.edu/pipermail/tinyos-help/2004-August/005027.html
From the datasheet:
Two command strobes, SACK and
SACKPEND are defined to transmit
acknowledge frames with the frame
pending field cleared or set, respectively.
The acknowledge frame is only
transmitted if the CRC is valid.
The CRC is checked in hardware before the acknowledgment
The CC1000 and CC2420 radios are completely different, with no relation to
each other.
Disabling CCA is easy to do in TinyOS 2.x: you just capture requestCca()
event in the RadioBackoff interface, provided by CC2420CsmaC, and call back
within that event to setCca(FALSE).
TinyOS 1.x is no
Hi Sha -
You're right, we are missing a check for RXFIFO overflow. Right now the
maximum default CC2420 packet size in TinyOS is 41 bytes (including CRC).
The RXFIFO is 128 bytes, which means you'd be able to fit 3 full packets in
the RXFIFO before an overflow occurs. Although I think it may be
hi, i now that in tinyos1, the paket size is limited to 29 bytes.is this the same thing in tinyos2.Boushra
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Not sure whether you've already figured it out.
CC2420Config is provided by CC2420Control component.
Ittipong
On 11/03/2008, Baozhi Chen [EMAIL PROTECTED] wrote:
Thank you a lot. How about CC2420Config?
Philip
On Tue, Mar 11, 2008 at 10:20 AM, Ittipong Khemapech
[EMAIL PROTECTED] wrote:
Hi David,
Thanks for the explanation.
The treatment of packets already in the RXFIFO queue is definitely
reasonable to the receiver. But if we use SACK to issue acknowledgements
like in CC2420ReceiveP.nc, the 3rd packet may wait quite some time before
the ack for it is sent, and hence the
Thanks very much for David's advice. I am installing modified version
of CountDual application on one mote as the transmitter, and the
modified version of TOSBase on another as the receiver. I found the
CountDual application is using the *GenericComm* component, is that
different from the
i now that in tinyos1, the paket size is limited to 29 bytes.
That's the default payload length.
This value is specified by TOSH_DATA_LENGTH and can be reset, for
instance, in your makefile using:
CFLAGS +=-DTOSH_DATA_LENGTH=value
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Forget this one.
CC2420PacketC provides CC2420PacketBody interface.
Ittipong
On 17/03/2008, Ittipong Khemapech [EMAIL PROTECTED] wrote:
Not sure whether you've already figured it out.
CC2420Config is provided by CC2420Control component.
Ittipong
On 11/03/2008, Baozhi Chen [EMAIL
The ACK delay was increased from ~128 (or lower) from earlier versions of
the CC2420 to 256 simply to handle these types of cases. Functional tests
show this delay works well for 'normal' networks of multiple nodes and
unaltered CSMA backoffs; however, modifying the CSMA behavior may
necessitate
Hello,
I have installed the crossbow software (cygwin, moteconfig, moteview, ...) on
windows xp. When I try to install MyApp (tutorials/lesson1) into the mote I
will get it compiled but it won't upload.
make micaz install mib520,com3
{}
uisp -dprog=mib520 -dserial=com3
Hi All,
I wrote the following program:
one sensor sends data (an array of integers) and another sensor that
receives
I wrote the following header file that defines the structure of the message:
#ifndef RSSISAMPLESC_H
#define RSSISAMPLESC_H
#define SAMPLES_NUM 1002
#define MESSAGE_LEN 100
The packet payload size can be changed in T1 by changing
TOSH_DATA_LENGTH at compile time. I suspect there is a
similar define (and further suspect that they changed
the name just to keep us on our toes). Search this list
for references to those names to find a multitude of advice.
MS
Boushra
Miles,
The sensor board MTS420 use the UART1 of mica bus, therefore it isn't
possible to switch to UART0 of mica bus. At tinyOS 1.x it works with
UART1 well.
OK, then you must use USART1.
?I'm not sure what you mean with
USART1 is used by the radio (in SPI mode)
I thought the communication
Hi Everyone,
I setup a network of 4 motes( including basestation) running with
'MultihopOscilloscope' application from TinyOS 2.x.
// MultihopOscilloscope is a simple data-collection demo. It periodically
samples the default sensor and broadcasts a message every few readings //
I want to
I was wondering how I would go about calling a command from another module
to utilize in my own module. For instance, I want to use the command
txBytes in NoCRCPacket in my own program MyApp. What do I have to add in
my program to do so. I've read in other threads that I need to wire
Few things to check/try:
- Make sure the programming port on MIB520 is in fact COM3 (lower of the 2 COM
ports)
- Make sure that the Mote is seated firmly into the 51-pin connector of the
MIB520
- Make sure that no other application is using COM3.
- Try make micaz install mib520,/dev/ttyS2 or
I checked all of the above without result.
- The port is com3 because it is the lower of both.
- the mote is firmly into the connector because its attached to it with two
screws.
- no other application was using the port since I rebooted the machine and this
was the first thing I did.
- even
Please search the archives and you might find more relevant details. For
telosb in tinyos-1.x you can have a look at the two files available at
\opt\tinyos-1.x\tos\platform\telosb called I2CPacketC.nc I2CPacketM.nc .
For tinyos-2.x please look at files inside \opt\tinyos-
Hello Eric,
I can see a switch in the mote which is off, but I think there is no switch in
the mib520.
Thanks,
David
Date: Mon, 17 Mar 2008 16:27:07 -0400
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: Re: [Tinyos-help] writing problem with micaz
David,
Are both of the
Hi,
Any way that I can restart a mote by coding instead of pressing reset
button? I've search mailing list and found that ResetC.nc may be useful.
Unfortunately, I can't find the file.
I'm using:
Tmote Sky and Invent
TinyOS 2.x
Windows XP cygwin
Many thanks in advance.
Ittipong
look for documentation on NESC. Basically anything in the interface
for a module can be called from another module.
MS
Mark Tsang wrote:
I was wondering how I would go about calling a command from another
module to utilize in my own module. For instance, I want to use the
command “txBytes” in
But NoCRCPacket doesn't have an interface. It looks to be a standalone
module. Or am I missing something?
-Original Message-
From: Michael Schippling [mailto:[EMAIL PROTECTED]
Sent: Monday, March 17, 2008 5:43 PM
To: Mark Tsang
Cc: tinyos-help@millennium.berkeley.edu
Subject: Re:
I am using MoteView and MoteWorks from Crossbow.
I try to install Blink application to my sensor mote. I tried to use make
mica2 reinstall mib520,com4, it has the following error: Who can help me with
this issue?
==
bash: [: /home/Ying: binary
I may have spoken out of turn but the 'provides' block in the T1 file is:
module NoCRCPacket {
provides {
interface StdControl as Control;
interface BareSendMsg as Send;
interface ReceiveMsg as Receive;
interface SendVarLenPacket;
command result_t txBytes(uint8_t *bytes,
Hi
What is the relationship between initialBackoff and congestionBackoff in
CC2420? In TinyOS-1.x, initialBackoff is smaller than congestionBackoff, but
in T2, initialBackoff is larger value. I searched mailing list and some one
mentioned that usually initialBackoff is bigger than
renjie huang wrote:
Hi
What is the relationship between initialBackoff and congestionBackoff in
CC2420? In TinyOS-1.x, initialBackoff is smaller than congestionBackoff,
but in T2, initialBackoff is larger value. I searched mailing list and
some one mentioned that usually initialBackoff
Thanks Yiannis
On 3/17/08, Yiannis Yiakoumis [EMAIL PROTECTED] wrote:
renjie huang wrote:
Hi
What is the relationship between initialBackoff and congestionBackoff in
CC2420? In TinyOS-1.x, initialBackoff is smaller than congestionBackoff,
but in T2, initialBackoff is larger value.
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