1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* Author: Brendan Le Foll <brendan.le.foll@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "mraa/gpio.h"
int
main(int argc, char** argv)
{
mraa_platform_t platform = mraa_get_platform_type();
mraa_gpio_context gpio, gpio_in = NULL;
const char* board_name = mraa_get_platform_name();
int ledstate = 0;
switch (platform) {
case MRAA_INTEL_GALILEO_GEN1:
gpio = mraa_gpio_init_raw(3);
break;
case MRAA_INTEL_MINNOWBOARD_MAX:
// there is no onboard LED that we can flash on the minnowboard max
// but on the calamari lure pin 21 is an LED. If you don't have the
// lure put an LED on pin 21
gpio = mraa_gpio_init(21);
break;
default:
gpio = mraa_gpio_init(13);
}
fprintf(stdout, "Welcome to libmraa\n Version: %s\n Running on %s\n", mraa_get_version(), board_name);
if (gpio == NULL) {
fprintf(stdout, "Could not initilaize gpio\n");
return 1;
}
// on platforms with physical button use gpio_in
if (platform == MRAA_INTEL_MINNOWBOARD_MAX) {
gpio_in = mraa_gpio_init(14);
if (gpio_in != NULL) {
mraa_gpio_dir(gpio_in, MRAA_GPIO_IN);
// S1 on minnowboardmax's calamari lure maps to pin 14, SW1 != S1
fprintf(stdout, "Press and hold S1 to stop, Press SW1 to shutdown!\n");
}
}
mraa_gpio_dir(gpio, MRAA_GPIO_OUT);
for (;;) {
if (gpio_in != NULL && mraa_gpio_read(gpio_in) == 0) {
return 0;
}
ledstate = !ledstate;
mraa_gpio_write(gpio, !ledstate);
sleep(1);
}
return 0;
}
|
