Straightforward LED blinking program for PIC32 devices.

pic32_blink_led.c

// pic32_blink_led.c
// Author: github.com/Costava
// License: MIT License (see end of file)

// The wiring is the recommended minimum connections with an additional resistor
// and LED. The positive lead of the LED is connected to VDD and the negative
// lead to RB3 through a 220 ohm resistor.

// Tested on:
// PIC32MX270F256B
// MPLAB X IDE v4.15
// XC32 v2.05

#include "xc.h"
#include "p32xxxx.h"

#pragma config FWDTEN   = OFF    // Turn off watchdog timer
#pragma config FNOSC    = FRCPLL // Select 8 MHz internal Fast RC (FRC) oscillator with PLL
#pragma config FPLLIDIV = DIV_2  // Divide PLL input (FRC) to get into required range [4 MHz, 5 MHz]
#pragma config FPLLMUL  = MUL_15 // PLL Multiplier
#pragma config FPLLODIV = DIV_1  // PLL Output Divider
#pragma config FPBDIV   = DIV_1  // Peripheral Clock divisor

// Operating at 8 / 2 * 15 / 1 = 60 MHz

void led_on() {
    LATBbits.LATB3 = 0;
}

void led_off() {
    LATBbits.LATB3 = 1;
}

void delay() {
    int i;
    for (i = 0; i < 1400000; i += 1);
}

int main() {
    ANSELBbits.ANSB3 = 0;// RB3 is digital
    TRISBbits.TRISB3 = 0;// RB3 is output 

    while (1) {
        delay();
        led_off();
        delay();
        led_on();
    }
    
    return 0;
}

/*
Copyright (c) 2020 Costava

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/