DigitalInOut Hello World

Fork of DigitalInOut_HelloWorld_Mbed by Mbed

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

No documentation found.

main.cpp

Committer:
sarahmarshy
Date:
20 months ago
Revision:
7:5ed5244f3929
Parent:
5:65ab82bfa4a6

File content as of revision 7:5ed5244f3929:

/* 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);
    }
}