// 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;
}