I have already checked possible electrical problems (pull-up and wires).
I use the last TinyOs version, I will try to analyze the behaviour of
the mote step by step at low level with leds.
Matteo
Quoting "R. Steve McKown" <[EMAIL PROTECTED]>:
My code was a hack used to do some bench testing. If I were you, I would get
the TI MSP430 User's Guide from www.ti.com/msp430 and use it as a reference
as you do some debugging on the I2C transaction code on the the slave code.
For example, you can turn on a LED if the slave sees the start sequence
(I2CIV_STT), and if so, then you can instead turn on the LED where the slave
gets a read or write request (I2CIV_RXRDY, I2CIV_TXRDY). You can "walk" the
LED debug code along the I2C process to find out where the code is broken.
Take a look at I2CInterrupts.fired() in Msp430I2CP.nc.
The problem might be electrical, but from prior posts I expect
you've got this
resolved. You need a pull-up resistor on (only) one mote between the SCL pin
and DVCC. You need three wires connecting the two motes, between their SDA,
SCL and Ground signals, respectively.
One final thought: the code worked on TinyOS 2.0.0beta2-3. It's
possible that
changes to tinyos since then have made the hack I wrote invalid.
Best of luck,
Steve
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