This content relates to a deprecated version of Mbed

Mbed 2 is now deprecated. For the latest version please see the Mbed OS documentation.

For the latest BusOut API, please see BusOut.

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

Hello World!

Import program

00001 /* mbed Example Program
00002  * Copyright (c) 2006-2014 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 #include "mbed.h"
00018 BusOut myleds(LED1, LED2, LED3, LED4);
00020 int main() {
00021     while(1) {
00022         for(int i=0; i<16; i++) {
00023             myleds = i;
00024             wait(0.25);
00025         }
00026     }
00027 }


API summary

Import librarymbed

No documentation found.


The BusOut Interface can be used on any pin with a blue label, and also with the on-board LEDs (LED1-LED4)

The BusOut Interface can be used to set the state of the output pin, and also read back the current output state. Set the BusOut to zero to turn it off, or 1 to turn it on.

See the Pinout page for more details

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