Can you use the Propeller Demo Board USB port to communicate with PC ?

Bean

I've tried using simple_serial with both pin 30 and 31. But I cannot get the red LED (send) to light at all.
I'm just using

Serial: "Simple_Serial"
Serial.Start(30, 31, 9600)
REPEAT
· Serial.tx("A")

I've tried swapping 30 and 31, but I cannot get any lights on the USB port on the demo board.

What am I doing wrong ?

Bean.


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“The United States is a nation of laws -· poorly written and randomly enforced.” - Frank Zappa

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Chris Savage

Bean,

Have you tried using the Full Duplex object? I have seen a few people having issues with the Simple Serial Object. Just a suggestion to narrow things down. Take care.

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Chris Savage
Parallax Tech Support

Mike Green

Bean,
The pin numbers do need to be swapped ("Serial.Start(31,30,9600)").

I've used FullDuplexSerial this way before (in BoeBotBasic). I'm not sure
if I've tried Simple_Serial though. It should work the same.
Mike

Bean

Okay I swapped the pins and I noticed that the red LED does come on for a moment, I guess it has a buffer and if nothing is receiving the data it fills up, then it won't send anymore.

I think I got it working now, thanks.

Bean.

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“The United States is a nation of laws -· poorly written and randomly enforced.” - Frank Zappa

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Post Edited (Bean (Hitt Consulting)) : 5/24/2007 6:48:52 PM GMT

Paul Baker

Yes, the COM port has to be open before you will see the LED lit for any extended peiod of time.

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Paul Baker
Propeller Applications Engineer

Parallax, Inc.

Bean

Yep, that was the fixed.
Working perfectly now using the PLX-DAQ software.

Thanks to everyone for your help.

Bean

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“The United States is a nation of laws -· poorly written and randomly enforced.” - Frank Zappa

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
www.hittconsulting.com
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