Starting a Project in MPLAB X for ChipKIT Products

Copy and paste the following code into your main file (overwriting whatever is already there).

// This code is specific to the DP32, and will not work on any other chipKIT device.
// For instructions on how to change this code to suit other chipKIT boards, check the
// Digilent blog for my post on how this code works.

#include <stdio.h>
#include <stdlib.h>
#include <p32xxxx.h>

// Main is where our program starts
int main(int argc, char** argv)
{
    // This code only gets executed once
    // It's the same as our setup() function in Arduino
    
    int i = 0; // Generic index value
    
    // Set pin 13/RB02 to output
    TRISBbits.TRISB2 = 0;
    // This is functionally the same as the pinMode() function in Arduino
    
    // This while loop runs forever.
    // It's the same as our loop() function in Arduino.
    while(1)
    {
        // Read the logic level of pin 13/RB0
        // Invert that, and set its logic level to the opposite of what it was
        LATBbits.LATB2 = ~PORTBbits.RB2;
        // This is a combination of digitalRead() and digitalWrite() in Arduino.
        
        // Delay for some time.
        // We're cheating and not using timers, because those are complicated,
        // so we don't know the exact time this will delay for.
        for(i = 0; i < 10000; i++);
    }

    return (EXIT_SUCCESS);
}

I won’t explain what this code does here, but if you’re interested and would like a complete explanation of what is going on, I’m writing a blog post for the Digilent blog that goes into more depth.