chipKIT MX7 button inputs

[davc]

Hi, I've just recently picked up coding the chipKIT board and ran into a problem with button inputs. When I run my code on the board, I need to push my button1 about five times before it exits the while loop and executes the next function. What is wrong with my code?

Thanks.

The following is my code

#include <plib.h>            //include peripheral library
#include <stdio.h>
#include <stdlib.h>
#pragma config ICESEL = ICS_PGx1    //configure on board licensed debugger
#pragma config FNOSC = PRIPLL        //configure system clock 80 MHz
#pragma config POSCMOD = EC
#pragma config FPLLIDIV = DIV_2
#pragma config FPLLMUL = MUL_20
#pragma config FPLLODIV = DIV_1
#pragma config FPBDIV = DIV_8        //configure peripheral bus clock to 10 MHz

#define TIMER 100000        //Set the period or flashing rate
int press;
int input;
int i;
int count;

 void turnOn(void){
    //Set button 1 as an input
    PORTSetPinsDigitalIn(IOPORT_G, BIT_6);
    //Set LEDs as output
    PORTSetPinsDigitalOut(IOPORT_G, BIT_12 | BIT_13 | BIT_14 | BIT_15);
    
    input = 0;
    while(!input)
    {
        PORTSetBits(IOPORT_G,BIT_12);  
        for(i = 0; i < TIMER && !input; i++)
        {
            input = PORTReadBits(IOPORT_G, BIT_6);
        }
        //Turn off LEDs
        PORTClearBits(IOPORT_G, BIT_12 | BIT_13 | BIT_14 | BIT_15); 
        for(i = 0; i < TIMER && !input; i++)
        {
            input = PORTReadBits(IOPORT_G, BIT_6);
        }
        //Turn on LED 2
        PORTSetBits(IOPORT_G, BIT_13);  
        for(i = 0; i < TIMER && !input; i++)
        {
            input = PORTReadBits(IOPORT_G, BIT_6);
        }
        //Turn off LEDs
        PORTClearBits(IOPORT_G, BIT_12 | BIT_13 | BIT_14 | BIT_15); 
        for(i = 0; i < TIMER && !input; i++)
        {
            input = PORTReadBits(IOPORT_G, BIT_6);
        }
        //Turn on LED 3
        PORTSetBits(IOPORT_G, BIT_14);  
        for(i = 0; i < TIMER && !input; i++)
        {
            input = PORTReadBits(IOPORT_G, BIT_6);
        }
        //Turn off LEDs
        PORTClearBits(IOPORT_G, BIT_12 | BIT_13 | BIT_14 | BIT_15); 
        for(i = 0; i < TIMER && !input; i++)
        {
            input = PORTReadBits(IOPORT_G, BIT_6);
        }
        //Turn on LED 4
        PORTSetBits(IOPORT_G, BIT_15);  
        for(i = 0; i < TIMER && !input; i++)
        {
            input = PORTReadBits(IOPORT_G, BIT_6);
        }
        //Turn off LEDs
        PORTClearBits(IOPORT_G, BIT_12 | BIT_13 | BIT_14 | BIT_15); 
        for(i = 0; i < TIMER && !input; i++)
        {
            input = PORTReadBits(IOPORT_G, BIT_6);
        }
    }
}

void main(void){
    //Set button 1 as an input
    PORTSetPinsDigitalIn(IOPORT_G, BIT_6);
    //Set LEDs as output
    PORTSetPinsDigitalOut(IOPORT_G, BIT_12 | BIT_13 | BIT_14 | BIT_15);
    
    while (1)                //perform the following loop indefinitely    
    {
        PORTClearBits(IOPORT_G, BIT_12 | BIT_13 | BIT_14 | BIT_15); 
        press = 0;
        while(!press)
        {
            press = PORTReadBits(IOPORT_G, BIT_6);
        }
turnOn();
PORTClearBits(IOPORT_G, BIT_12 | BIT_13 | BIT_14 | BIT_15); 
   }
}

[jpeyron]

Hi davc,

Which while loop are you refering to?  Also have you tried using mplabx?  It has a realtime debugger for the different variables.

cheers,

Jon