Could I find any RS232 example code for PIC16F1947 ?

che_chia · Joined: 09 May 2011 Posts: 6

I'm trying to verify whether my pcb RS232 function is normal or not by HyperTerminal.

I can't do it very well for many until now. Where could I find this kind of example code?

Thanks a lot!!!

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

The code should be similar for any PIC16Fxxxx chip. On the other hand HyperTerminal is awful. Use SIOW that comes with CCS or Realterm or Terminal by Brady++ or any one of the other better terminal programs for the PC.
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Douglas Kennedy · Joined: 07 Sep 2003 Posts: 755 Location: Florida

Please heed the advice not to use Hyperterminal. When new to RS232 the last thing you need is to deal with the quirks of Hyperterminal. Next remember that RS232 is asynchronous so a character can arrive and will arrive at anytime not just at the ends of lines of code or sections of your main code. The robust way is to write an interrupt driven circular buffer. Except for the simplest use you'll find you'll need a circular buffer anyway. This board has many questions about wayward RS232 code most of which would have been avoided by use of an interrupt driven circular buffer.

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Here is a sample program. When you type a character in a terminal
window on your PC, this program should receive and send it back to
the PC, where it will be displayed.