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DigitalIn Hello World
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Use
The DigitalIn API is used to read a digital pin. The value will be either 0 or 1. Buttons and switches are some of the more common digital inputs.
API
API reference.
Import librarymbed
main.cpp
- Committer:
- mbedAustin
- Date:
- 2015-03-27
- Revision:
- 4:9b20ef58e04c
- Parent:
- 3:e2f865861a7a
- Child:
- 5:fa65447e171b
File content as of revision 4:9b20ef58e04c:
/* mbed Example Program * Copyright (c) 2006-2014 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "mbed.h" DigitalIn enable(p5); DigitalOut led(LED1); // blink LED when enable line is high int main() { while(1) { if(enable) { led = !led; } wait(0.25); } }