PIC16F876A and INT_RDA problem

[Khaled]

We were using 16F873 the following code was working ok. but when we upgrade to 16F876a by using CCS compiler version 3.16 the INT_RDA becomes not working. Please advise.

My simple code is:
#include <16f876a.h>
#include <string.h>
#include <stdlib.h>
#use delay(clock=3686400)
#use rs232(baud=9600,xmit=PIN_c6,rcv=PIN_c7)

#int_rda
void serial_isr(){
char ch;
disable_interrupts(global);
ch=getc();
printf("rec ok");
delay_ms(1000);
putc(ch);
enable_interrupts(global);
}

main(){
set_tris_c(0x80);
enable_interrupts(global);
enable_interrupts(int_rda);
while (1) {}

}
___________________________
This message was ported from CCS's old forum
Original Post ID: 144515566

[PCM programmer]

:=We were using 16F873 the following code was working ok. but when we upgrade to 16F876a by using CCS compiler version 3.16 the INT_RDA becomes not working. Please advise.
-------------------------------------------------------

You didn't show your #fuses statement, and that could
be part of the problem.

You're doing several things in your #int_rda function
that are not good.

Instead of using your program, try the one shown in this post.
<a href="http://www.pic-c.com/forum/general/posts/13774.html" TARGET="_blank">http://www.pic-c.com/forum/general/posts/13774.html</a>
Change the PIC to 16F877A, change the clock speed to 3686400,
and also change the oscillator type in the #fuses statement
from HS to XT. But don't change anything else. Then try it.
___________________________
This message was ported from CCS's old forum
Original Post ID: 144515568