| Gordon Henderson | 3fbc564 | 2013-03-24 20:04:07 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * blink.c: |
| 3 | * Standard "blink" program in wiringPi. Blinks an LED connected |
| 4 | * to the first GPIO pin. |
| 5 | * |
| 6 | * Copyright (c) 2012-2013 Gordon Henderson. <projects@drogon.net> |
| 7 | *********************************************************************** |
| 8 | * This file is part of wiringPi: |
| 9 | * https://projects.drogon.net/raspberry-pi/wiringpi/ |
| 10 | * |
| 11 | * wiringPi is free software: you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU Lesser General Public License as published by |
| 13 | * the Free Software Foundation, either version 3 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * wiringPi is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU Lesser General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU Lesser General Public License |
| 22 | * along with wiringPi. If not, see <http://www.gnu.org/licenses/>. |
| 23 | *********************************************************************** |
| 24 | */ |
| 25 | |
| 26 | #include <stdio.h> |
| 27 | #include <wiringPi.h> |
| 28 | |
| 29 | // LED Pin - wiringPi pin 0 is BCM_GPIO 17. |
| 30 | |
| 31 | #define LED 0 |
| 32 | |
| 33 | int main (void) |
| 34 | { |
| 35 | printf ("Raspberry Pi blink\n") ; |
| 36 | |
| 37 | if (wiringPiSetup () == -1) |
| 38 | return 1 ; |
| 39 | |
| 40 | pinMode (LED, OUTPUT) ; |
| 41 | |
| 42 | for (;;) |
| 43 | { |
| 44 | digitalWrite (LED, 1) ; // On |
| 45 | delay (500) ; // mS |
| 46 | digitalWrite (LED, 0) ; // Off |
| 47 | delay (500) ; |
| 48 | } |
| 49 | return 0 ; |
| 50 | } |