I did not notice an imp.configure() - is it part of your code?
The configure is the first line, so that’s OK. Yes, that should work fine, sending an 0xAA once per second. If you want to be more rigid with the timing put the imp.wakeup at the top of the txtx function, otherwise the period will be 1s plus however long the rest of the function takes to execute. Not really an issue here, but for a more complex function it might be.
Well that’s embarrassing! I’ve been putting it at the bottom, so I guess that’s why I didn’t see it.
Hmm, I tried this and it doesn’t seem to be working. I can confirm that the code on the msp430 is fine because I tested it with 2 msp430 boards talking to each other. So there must be something wrong with the squirrel code.
Your eval board serial port is definitely 3.3V not RS232?
I’m a tad suspicious of types. Try imp.wakeup(1.0, rxtx) to ensure the period is a float.
…and pin 8 is transmit. Just checking
Word format? Baud rate? Flow control disabled on the other side?
Solved. I actually had it hooked up to the wrong pin on the msp430 board! It works perfectly fine. Receiving 0xAA every 1 s.