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TX/RX 434 interfacing

 
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PICnewbie



Joined: 12 Mar 2010
Posts: 2

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TX/RX 434 interfacing
PostPosted: Sat Mar 13, 2010 6:39 pm     Reply with quote
Hi, I am trying to test my wireless TX with PIC18F4520.
http://www.sparkfun.com/commerce/product_info.php?products_id=8946
In PIC18F4520 RS232 Hardware ports are C6,C7 and built-in to the board. i.e. pin ports are already used.

If I were to connect with TX/RX data pin, how am I going to connect with the devices since C6 and C7 are already taken for RS232? And how to check the transmit/receive data? Do I need 2 microcontrollers to achieve the result?

I am a little slow on understanding things. Can anyone please help?
Code:

#include <18f4520.h>             //IC HEADER FILE
#use delay(clock=20000000)     //SETTING CLOCK FREQUENCY
#fuses HS,NOLVP,NOWDT  //SETTING FUSES

#use rs232(baud=2400,parity=N,xmit=PIN_C6,rcv=PIN_C7)

void main()
{
int i=0;
   while(1)
   {
      putc(i);
      i++;
   }
}
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Sun Mar 14, 2010 5:11 pm     Reply with quote
You could specify a software UART on two other i/o pins.

See this thread for other issues:
http://www.ccsinfo.com/forum/viewtopic.php?t=37927
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