Paparazzi UAS  v5.0.5_stable-7-g4b8bbb7
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gpio_ardrone.c
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1 /*
2  * Copyright (C) 2011 Hugo Perquin - http://blog.perquin.com
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
17  * MA 02110-1301 USA.
18  */
19 
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include "gpio_ardrone.h"
28 
29 //val=0 -> set gpio output lo
30 //val=1 -> set gpio output hi
31 //val=-1 -> set gpio as input (output hi-Z)
32 int gpio_set(int nr,int val)
33 {
34  char cmdline[200];
35  if(val<0) sprintf(cmdline,"/usr/sbin/gpio %d -d i",nr);
36  else if(val>0) sprintf(cmdline,"/usr/sbin/gpio %d -d ho 1",nr);
37  else sprintf(cmdline,"/usr/sbin/gpio %d -d ho 0",nr);
38  return system(cmdline);
39 }
uint16_t val[TCOUPLE_NB]
ardrone GPIO driver
int gpio_set(int nr, int val)
Definition: gpio_ardrone.c:32