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One wire RS232

 
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One wire RS232
PostPosted: Sun Aug 13, 2006 7:02 am     Reply with quote
Hi,

Is it possible to use 1 pin for rx & tx? If so, what's the way to do it?

I tried this, but it doesn't work:
#use rs232(baud=9600, parity=N, bits=8, rcv=pin_b5, xmit=pin_b5)
Guest
PostPosted: Sun Aug 13, 2006 7:03 am     Reply with quote
Oh and it will be half-duplex communication ofcourse.. don't worry about timing, cause I just want one side to respond to a byte sent on the other side..
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Sun Aug 13, 2006 9:26 am     Reply with quote
See these CCS example files:
c:\program files\picc\examples\ex_pbusm.c
c:\program files\picc\examples\ex_pbusr.c

FAQ page with schematic:
http://www.ccsinfo.com/faq.php?page=connect_pics
SherpaDoug



Joined: 07 Sep 2003
Posts: 1640
Location: Cape Cod Mass USA

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PostPosted: Mon Aug 14, 2006 12:08 pm     Reply with quote
I do that all the time. Here is my usual RS232 setup line:

Code:
#define TXRser      PIN_B0   /* Serial connection to Smart TXR */
#use rs232(baud=1200, xmit=TXRser, rcv=TXRser, invert)

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