Mercurial > mbsePi-apps / file comparison
comparison: dht11/dht11.c
dht11/dht11.c
- changeset 31
- 89dd2b691701
- child 35
- f3c5ae78b746
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| 30:9c7119ac0455 | 31:89dd2b691701 |
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| 1 /***************************************************************************** | |
| 2 * Copyright (C) 2014 | |
| 3 * | |
| 4 * Michiel Broek <mbroek at mbse dot eu> | |
| 5 * | |
| 6 * This file is part of the mbsePi-apps | |
| 7 * | |
| 8 * This is free software; you can redistribute it and/or modify it | |
| 9 * under the terms of the GNU General Public License as published by the | |
| 10 * Free Software Foundation; either version 2, or (at your option) any | |
| 11 * later version. | |
| 12 * | |
| 13 * mbsePi-apps is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 * General Public License for more details. | |
| 17 * | |
| 18 * You should have received a copy of the GNU General Public License | |
| 19 * along with EC-65K; see the file COPYING. If not, write to the Free | |
| 20 * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
| 21 *****************************************************************************/ | |
| 22 | |
| 23 #include "../lib/mbselib.h" | |
| 24 #include "dht11.h" | |
| 25 | |
| 26 #ifdef HAVE_WIRINGPI_H | |
| 27 | |
| 28 extern int dht11_valid; | |
| 29 extern int dht11_temperature; | |
| 30 extern int dht11_humidity; | |
| 31 | |
| 32 int main(int argc, char *argv[]) { | |
| 33 | |
| 34 int PIN = 3; | |
| 35 | |
| 36 if (wiringPiSetup() == -1) | |
| 37 return 0; | |
| 38 | |
| 39 dht11Init(PIN, 0, 6); | |
| 40 dht11Read(); | |
| 41 if (dht11_valid) { | |
| 42 fprintf(stdout, "DHT11: temperature %d degrees, humidity %d%%\n", dht11_temperature, dht11_humidity); | |
| 43 } else { | |
| 44 fprintf(stdout, "DHT11: no valid data or sensor not connected\n"); | |
| 45 } | |
| 46 | |
| 47 exit(0); | |
| 48 } | |
| 49 | |
| 50 #else | |
| 51 | |
| 52 int main(int argc, char *argv[]) { | |
| 53 fprintf(stderr, "This program does nothing without the wiringPi library\n"); | |
| 54 return 0; | |
| 55 } | |
| 56 | |
| 57 #endif | |
| 58 |
