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BusOut

Table of Contents

  1. Hello World!
  2. API
  3. Interface
  4. Examples
  5. Related

/media/uploads/mbedofficial/digitalout_interfaces.png

The BusOut interface is used to create a number of DigitalOut pins that can be written as one value.

Hello World!

Binary counter on LEDs

#include "mbed.h"

BusOut myleds(LED1, LED2, LED3, LED4);

int main() {
    while(1) {
        for(int i=0; i<16; i++) {
            myleds = i;
            wait(0.25);
        }
    }
}

API

API summary

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Interface

The BusOut interface can be used on mbed pins p5-p30, and also on-board LED1-LED4

The BusOut interface can be used to set the state of the output pins, and also read back the current output state.

Examples

Scroll across the LEDs

#include "mbed.h"

BusOut myleds(LED1, LED2, LED3, LED4);

int main() {
    while(1) {
        for(int i=0; i<4; i++) {
            myleds = 1 << i;
            wait(0.25);
        }
    }
}
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