I don't use T2 so this should be taken under advisement...
It may be that the dest addr is FFFF because it gets overwritten
with the UART address when being forwarded. There is no src addr
in the standard header (unless this changed in T2), but it is
often included in the message body. If that is getting overwritten
all bets are off. In T1, the UART message format is the mica2 format
in tos/types/AM.h. TOSBase converts from micaz to mica2 format unless
you do some special magic, and the 2420 radio fields (lqi, etc) are
dropped. Tmotes with Boomerang do not do this, so the behavior is
different on different platforms/versions. RSSI is tagged on to the
end of messages in receive() but is not part of the UART forwarded
message so you have no way to see it on the PC side. Folks have fixed
this by modifying the receive() in the base-station to grab the RSSI
and overwrite some field in the message before forwarding.
So I guess the message is that you'll have to dig through your base-
station code to see what it is really doing...also search this list
for RSSI grabbing advice.
MS
Ittipong Khemapech wrote:
Hi,
I am trying to do the same thing but in TinyOS 2.x. I am modifying
BlinkToRadio and BaseStation to vart transmission power level (TX) and
see how RSSI changes. I have successfully change the TX.
I've been using the tools/java/net/tinyos/tools/Listen.java program by
following Lesson 4 in the tutorial. There are several problems that I am
having:
1. I've got FF FF for both source and destination addresses.
2. I have no clue where to start getting RSSI and LQI readings.
Any suggestions would be appreciated.
Best wishes,
Ittipong
On 03/12/2007, *Michael Schippling* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
In TOS1.x the OscilloscopeRF and SenseToRfm demo apps send ADC readings
over the radio. TOSBase is used at the PC receiving end to forward the
messages through the UART into the host PC. Oscope has a host side
display
program, or you can use the tools/java/net/tinyos/tools/Listen.java
program
to peek at the messages themselves. You shouldn't have to fiddle with
any code to get this working and they provide a reasonable basis for
your own development.
You should also read through the doc/tutorial where most of this is
covered.
MS
Ruoshui Liu wrote:
> Dear all,
>
> Currently, I have implemented a single transmission link
containing one
> transmitter and one receiver. What I want to do next is to use
the PC or
> laptop to read the received raw data from the receiver over the UART
> channel. I know I have to plug the receiver to the programming board
> acting as the basestation, and I think the start point is probably to
> modify the TOSBase. However, there are many other functions
included in
> the TOSBase application. What I want to do is just the simple job to
> send the raw data back to the PC via UART. Could anyone tell me
how to
> simplify this? I mean what is the core part or key function I
should use
> in order to read the raw data. Thank you very much!
>
> Best regards,
> Ruoshui Liu
> _______________________________________________
> Tinyos-help mailing list
> [email protected]
<mailto:[email protected]>
>
https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
--
Platform: WinXP/Cygwin
TinyOS version: 1.x, Boomerang
Programmer: MIB510
Device(s): Mica2, MicaZ, Tmote
Sensor board: homebrew
_______________________________________________
Tinyos-help mailing list
[email protected]
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--
Platform: WinXP/Cygwin
TinyOS version: 1.x, Boomerang
Programmer: MIB510
Device(s): Mica2, MicaZ, Tmote
Sensor board: homebrew
_______________________________________________
Tinyos-help mailing list
[email protected]
https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
