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PIC16F628A #int_RA Interrupt problem

 
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bells_electronics



Joined: 05 Dec 2009
Posts: 40

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PIC16F628A #int_RA Interrupt problem
PostPosted: Thu Jan 20, 2011 1:07 pm     Reply with quote
hey guys
I'm having problem with #int_RA, I want an interrupt whenever any change occurs at port A. Here is my code
Code:

#include <16F628A.h>

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES HS                       //High speed Osc (>4mhz)
#FUSES PUT                      //No Power Up Timer
#FUSES NOPROTECT                //Code not protected from reading
#FUSES NOBROWNOUT               //No brownout reset
#FUSES NOLVP                    //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOCPD                    //No EE protection

#use delay(clock=4MHz , internal)

#define test_led PIN_B0

#INT_RDA                     
void port_a_isr()
 {
 
  output_toggle(test_led);
 }
 
void main()
 {
  set_tris_b(0b00000000);
  set_tris_a(0b00000111);
  output_low(test_led);
 
  setup_comparator(NC_NC_NC_NC); 
  enable_interrupts(INT_RDA);
  enable_interrupts(GLOBAL);
 
  while(TRUE)     
   delay_ms(1000);
 }
 
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Thu Jan 20, 2011 1:38 pm     Reply with quote
Go to the webpage for the 16F628A and download the data sheet.
http://www.microchip.com/wwwproducts/devices.aspx?ddocname=en010210

Look in this section, which is in the "Special Features of the CPU" section.
Quote:
14.5 Interrupts

Do you see any interrupt-on-change for PortA listed ?


Download the CCS compiler manual.
http://www.ccsinfo.com/downloads/ccs_c_manual.pdf
Look in this section:
Quote:
#INT_xxxx

What does #INT_RDA do ?
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