main.cpp

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"
00017 
00018 DigitalIn  mypin(SW2); // change this to the button on your board
00019 DigitalOut myled(LED1);
00020 
00021 int main()
00022 {
00023     // check mypin object is initialized and connected to a pin
00024     if(mypin.is_connected()) {
00025         printf("mypin is connected and initialized! \n\r");
00026     }
00027     
00028     // Optional: set mode as PullUp/PullDown/PullNone/OpenDrain
00029     mypin.mode(PullNone); 
00030     
00031     // press the button and see the console / led change
00032     while(1) {
00033         printf("mypin has value : %d \n\r", mypin.read());
00034         myled = mypin; // toggle led based on value of button
00035         wait(0.25);
00036     }
00037 }