Serial communication problems

dev/null

Hi all,

I have problems getting serial com between Stamps to work. I am trying both BS2 and BS2p combinations, and all tries results in jibberish data or timeouts. I have numerous other serial devices connected to both Master and Slave and they all work fine.
This is critical for my robot to work, and if I can't get this working my whole robot project will die a lonesome death.
- The baud rates are correct.
- The pins are correctly connected
- All units are connected to common ground.
- I've tried 2400 and 9600 speeds.

Master:

  SEROUT IOSlave/FCSlave, N2400 + Inverted, [noparse][[/noparse] 1 ]

Slave:

  SERIN SIOpin/FCpin, N2400 + Inverted, 1000, Cont, [noparse][[/noparse]indata]

Any ideas?

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/dev/null

dev/null

I tried with 1200 baud and no flow control, and that actually works. I loose flow-control but I can live with that.
Or I'll buy a MAX3100.

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/dev/null

stamptrol

Flow control usually works fine. The only thing I'd suggest is doing a test with the setup shown in the Editor Help file for SERIN.

There's a chance the 1K and the two 470 ohm are just a bit too high.

Cheers,

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Tom Sisk

http://www.siskconsult.com
·

Tracy Allen

You need a back slash, not forward slash for the flow control pin.
SEROUT IOSlave\FCSlave,...
not
SEROUT IOSlave/FCSlave,...
Same for SERIN.
The faulty syntax selects the i/o pin that is the result of dividing IOSlave by FCSlave, not what you want!

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Tracy Allen
www.emesystems.com

dev/null

omg. thanks! I will try that.
(lol)

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/dev/null