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coding help

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PCM programmer

Joined: 06 Sep 2003
Posts: 21708

Posted: Thu Jan 04, 2007 12:16 pm

To me, it just sounds like you're making more complicated then it
needs to be. I made the following test program for a PicDem2-Plus
and it displays an incrementing number as I press the tactile switch
that's connected to Pin B0. Here's the output displayed on a terminal
window:

Quote:

123123123

Code:

#include <18F452.h>
#fuses XT, NOWDT, PUT, BROWNOUT, NOLVP
#use delay(clock=4000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, ERRORS)

#define BUTTON_PIN PIN_B0 // This pin must have a pull-up.
#define DEBOUNCE_PERIOD_IN_MS 10
#define DEBOUNCE_COUNT 2

void wait_for_keypress(void);

//====================================
void main()
{
int value;

value = 0;

while(1)
{
wait_for_keypress();
value++;

if(value == 1)
printf("1");

if(value == 2)
printf("2");

if(value == 3)
{
printf("3");
value = 0;
}
}

while(1);
}

//==================================

void wait_for_keypress(void)
{
// Put the function code here from the link that
// I posted earlier in the thread.

}

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