File content as of revision 0:63cb70b5e1f8:

#include "mbed.h"

// https://lancaster-university.github.io/microbit-docs/ubit/display/
/* 
 * All the LEDs on the micro:bit are part of the LED Matrix,
 * In order to get simple blinking behaviour, we set column 0
 * to be permanently at ground. If you want to use the LEDs as
 * a screen, there is a display driver in the micro:bit 'DAL',
 */
DigitalOut col0(P0_4, 0);


DigitalOut myled1(P0_14);   //4,2
DigitalOut myled2(P0_13);   //0,0
DigitalOut myled3(P0_15);   //2,4
DigitalOut myled4(P0_18);   //2,4




//DigitalOut myled(P0_13); //0,0
//DigitalOut myled(P0_13); //0,0
//DigitalOut myled(P0_13); //0,0






int main() {
    while(1) {
        
        myled1 = 1;
        wait_us(1000000);
        myled1 = 0;
        wait_us(1000000);
        /*
        myled2 = 1;
        wait_us(1000000);
        myled2 = 0;
        wait_us(1000000);
        
        
        myled4 = 1;
        wait_us(1000000);
        myled4 = 0;
        wait_us(1000000);
        */
    }
}