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How to read status of port or pin?

 
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soulweed



Joined: 20 Oct 2006
Posts: 23

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How to read status of port or pin?
PostPosted: Sat Apr 07, 2007 3:02 am     Reply with quote
ex. now i output_high(PIN_D0)

then ten minute ago i send command to pic and pic send status comeback "Now PIN_DO is high"

thank.
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Sat Apr 07, 2007 11:42 am     Reply with quote
Your question is really about how to create a simple way to have an
external device communicate with your PIC. (Send commands to the
PIC and receive data back).

These posts are about a simpile protocol for RS-232 communications:
http://www.ccsinfo.com/forum/viewtopic.php?t=27059&highlight=protocol
http://www.ccsinfo.com/forum/viewtopic.php?t=28918&highlight=protocol
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