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Simple question about 16F628 RS232

 
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leesing2k3



Joined: 08 Nov 2005
Posts: 28

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Simple question about 16F628 RS232
PostPosted: Mon Nov 14, 2005 12:28 am     Reply with quote

I try to use other pins other than B1 and B2 to do RS232 but the data i m receiving is not correct. Izzit possible to use other pins to do RS232 or is there anything i should do to make it possible?

I have declared it correctly.

Thank you.
asmallri



Joined: 12 Aug 2004
Posts: 1607
Location: Perth, Australia

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Re: Simple question about 16F628 RS232
PostPosted: Mon Nov 14, 2005 12:54 am     Reply with quote

leesing2k3 wrote:
I try to use other pins other than B1 and B2 to do RS232 but the data i m receiving is not correct. Izzit possible to use other pins to do RS232 or is there anything i should do to make it possible?

I have declared it correctly.

Thank you.


You can use any I/O pins that are free. You have not given any clue as to what your problem is. Without a crystal ball there is nothing else I can suggest.
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PCM programmer



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PostPosted: Mon Nov 14, 2005 12:57 am     Reply with quote

What pins are you using ?

Try this simple program with a terminal program running on your PC.
This program just returns the same character that was sent to it.
Substitute your pins for B2 and B1. See if it works.

If it doesn't work, then post your version of the compiler.
Code:
#include <16F628.H>
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
#use delay(clock = 4000000)
#use rs232(baud=9600, xmit=PIN_B2, rcv=PIN_B1, ERRORS)

//======================================
void main()
{
char c;

while(1)
  {
   c = getc();
   putc(c);
  }
     
}
leesing2k3



Joined: 08 Nov 2005
Posts: 28

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PostPosted: Mon Nov 14, 2005 8:52 am     Reply with quote

thank you very much
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