[Tinyos-help] oscilloscope failing to read successfully (mica z, mts300, tinyOS 2.0)

[Murray, Ben]

further investigations, still no readings...

I modified the SenseC application that comes with tos2 to check the error_t
returned for both the Read.read() call and the Read.readDone() event:

calling Read.read() returns SUCCESS the first two times it is called, and
EBUSY thereafter, no matter what the interval between calls (I tried from
100ms up to 10,000ms...)

Read.readDone is never signalled (!?) at all. Not once. I have tried with a
few different motes and a few sensor boards, so it's not h/w as far as I can
tell. Is there perhaps something that is not getting booted up / initiated /
released properly? It's using the default Demosensor (VoltageC) I also tried
just setting a OneShot timer to call Read.read() to see if readDone was
signalled - it wasn't after a minute or two...

Could this have anything to do with the tos2 updates recently and something
I recall seeing called I2C or was that something else? Or possibly some
setting for the micaz (with or without a mts300 cb attached) that is no
longer working properly? Perhaps the ADC isn't starting up? ...but it is all
the default TinyOS (2.0 --> 2.0.2 updated a while ago) setup etc etc. Make
output in p.s.

Thanks!
-Ben


-------------------------
$ makei
mkdir -p build/micaz
    compiling SenseAppC to a micaz binary
ncc -o build/micaz/main.exe -Os -finline-limit=100000 -Wall -Wshadow
-Wnesc-all -target=micaz -fnesc-cfile=build/micaz/app.c -board=micasb
-fnesc-dump=wiring -fnesc-dump='interfaces(!abstract())'
-fnesc-dump='referenced(interfacedefs, components)'
-fnesc-dumpfile=build/micaz/wiring-check.xml SenseAppC.nc -lm
    compiled SenseAppC to build/micaz/main.exe
            3084 bytes in ROM
              47 bytes in RAM
avr-objcopy --output-target=srec build/micaz/main.exe build/micaz/main.srec
avr-objcopy --output-target=ihex build/micaz/main.exe build/micaz/main.ihex
    writing TOS image
cp build/micaz/main.srec build/micaz/main.srec.out
    installing micaz binary using mib510
uisp -dprog=mib510 -dserial=/dev/ttyS0 --wr_fuse_h=0xd9 -dpart=ATmega128
--wr_fuse_e=ff  --erase --upload if=build/micaz/main.srec.out
Firmware Version: 2.1
Atmel AVR ATmega128 is found.
Uploading: flash

Fuse High Byte set to 0xd9

Fuse Extended Byte set to 0xff
rm -f build/micaz/main.exe.out build/micaz/main.srec.out
-------------------------



> 
> As an update to this, I tried using the basic provided 
> application "Sense"
> (cygwin\opt\tinyos-2.x\apps\Sense) with a slightly modified 
> "read.read" line
> as follows:
> 
>     if (call Read.read() != SUCCESS) {
> 		call Leds.led0Toggle();
> 	}
> 
> And all I get is led0 toggling -- it never returned a result. 
>  We have tried
> to trace it to work out where the error_t is not being set to 
> SUCCESS, but
> it gets rather confusing with all the arbiters and resource management
> thrown in!
> 
> My current installed version is tinyOS 2.0.2 -- are there any 
> known problems
> or updates regarding the Read.read interface that could cause 
> it to never
> returned a SUCCESS.
> 
> Regards
> Ben
> 
> 
> > I am not quite sure what is going wrong but the oscilloscope 
> > application
> > (unmodified) does not seem to be able to get a SUCCESS upon calling
> > Read.read() and therefore simply sits there and blinks 
> Led0.  It fails
> > whether or not I connect a sensor board -- any idea what 
> > might be causing
> > the problem?
> 
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