BarGraph

Simple code to turn a percentage (0.0 - 1.0, e.g. AnalogIn) to a bargraph (e.g. leds) using BusOut and some maths...

#include "mbed.h"

BusOut leds(LED1, LED2, LED3, LED4);
AnalogIn sound(p18);

int main() {
    while(1) {
        leds = (1 << (int)(sound * 5.0)) - 1;
    }
}