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#use rs232 on pins other than rx and tx

 
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umka



Joined: 28 Aug 2007
Posts: 99
Location: New Zealand

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#use rs232 on pins other than rx and tx
PostPosted: Sat Apr 12, 2008 3:02 pm     Reply with quote

I am wanting to send data to a computer from a pic16F877a but also be able to send an int16 reference to a pic16F628a.

So the question is if RX and TX are being used for the communication between Master PIC and PC how can i communicate between Master and Slave PIC?
KU5D



Joined: 10 Feb 2008
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Location: Asheville, North Carolina

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PostPosted: Sat Apr 12, 2008 5:45 pm     Reply with quote

I've not worked with the 877 but I think it'll do software uarts. Do the following:

#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, ERRORS, stream=PC)
#use rs232(baud=4800, xmit=PIN_D7, rcv=PIN_D6,stream=PIC)

Set your pins for the software uart according to your hardware, and set the baud rates for what you want. If you're using interrupts on your comm ports, the software uart is a bit different, but this should get you started.
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umka



Joined: 28 Aug 2007
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Location: New Zealand

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PostPosted: Sat Apr 12, 2008 9:36 pm     Reply with quote

cheers KU5D I will try that and see how it goes
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