Programming problem for PIC 16f877a

[Rooney_04]

hi
below is some programing code i did for binary sequence count. So i like to use push button as to count up and another push button to push down. So i would like how i can PIN_b0 and Pin_B1 as the input. how i can do that or the coding ?


#include <16F877a.h>
#include <stdio.h>
#include <stdlib.h>
#use delay(clock=20000000)
#fuses hs, noprotect, nowdt, nolvp
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,stream=RS232,bits=8)

#byte portb=6
#byte portc=7
#byte portd=8



int k, datain;

void main()
{
k=0;

loop:

// Check Input
datain=input_b();

if( bit_test(datain,0) && !bit_test (datain,1) )
k++;
if( !bit_test(datain,0) && bit_test (datain,1) )
k--;

// Send Data to RS232
putc(k);
delay_ms(50);

goto loop;

}

 

[john blue]

what compiler you are using?

 

[Rooney_04]

i m using CCS compiler

 

[john blue]

if ((input(PIN_E1) == 1) // for pin E1 as input

---------- Post added at 06:17 ---------- Previous post was at 05:55 ----------

you need some debouncing routine also for the switches

 

[betwixt]

And get rid of the "goto" before it causes you problems!
Wrap the read/send routines in a while(1) loop instead.

Brian.