File content as of revision 3:68629c6c4970:

/* 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"
 
BusInOut pins(D0, D1, D2);
 
int main() {
    while(1) {
        pins.output();
        pins = 0x3;
        wait(1);
        pins.input();
        wait(1);
        if(pins == 0x6) {
            printf("Hello!\n");
        }
    }
}