DigitalInOut Hello World
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Use
The DigitalInOut API can be used to both read and write a digital pin. Use the output() and input() function calls to switch modes and then use just like you would DigitalIn or DigitalOut.
API
API reference.
Import librarymbed
main.cpp
- Committer:
- mab5449
- Date:
- 2017-01-19
- Revision:
- 6:185e0d3e7212
- Parent:
- 5:65ab82bfa4a6
File content as of revision 6:185e0d3e7212:
/* 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" DigitalInOut mypin(LED1); int main() { // check that mypin object is initialized and connected to a pin if(mypin.is_connected()) { printf("mypin is initialized and connected!\n\r"); } // Optional: set mode as PullUp/PullDown/PullNone/OpenDrain mypin.mode(PullNone); while(1) { // write to pin as output mypin.output(); mypin = !mypin; // toggle output wait(0.5); // read from pin as input mypin.input(); printf("mypin.read() = %d \n\r",mypin.read()); wait(0.5); } }