1 /*
2 * Author: Jon Trulson <jtrulson@ics.com>
3 * Copyright (c) 2014 Intel Corporation.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25 #include <iostream>
26 #include <string>
27 #include <stdexcept>
28
29 #include "a110x.h"
30
31 using namespace upm;
32 using namespace std;
33
A110X(int pin)34 A110X::A110X(int pin)
35 {
36 if ( !(m_gpio = mraa_gpio_init(pin)) )
37 {
38 throw std::invalid_argument(std::string(__FUNCTION__) +
39 ": mraa_gpio_init() failed, invalid pin?");
40 return;
41 }
42
43 mraa_gpio_dir(m_gpio, MRAA_GPIO_IN);
44 m_isrInstalled = false;
45 }
46
~A110X()47 A110X::~A110X()
48 {
49 if (m_isrInstalled)
50 uninstallISR();
51
52 mraa_gpio_close(m_gpio);
53 }
54
magnetDetected()55 bool A110X::magnetDetected()
56 {
57 return (!mraa_gpio_read(m_gpio) ? true : false);
58 }
59
60 #ifdef JAVACALLBACK
installISR(IsrCallback * cb)61 void A110X::installISR( IsrCallback *cb)
62 {
63 installISR(generic_callback_isr, cb);
64 }
65 #endif
66
installISR(void (* isr)(void *),void * arg)67 void A110X::installISR(void (*isr)(void *), void *arg)
68 {
69 if (m_isrInstalled)
70 uninstallISR();
71
72 // install our interrupt handler
73 mraa_gpio_isr(m_gpio, MRAA_GPIO_EDGE_FALLING,
74 isr, arg);
75 m_isrInstalled = true;
76 }
77
uninstallISR()78 void A110X::uninstallISR()
79 {
80 mraa_gpio_isr_exit(m_gpio);
81 m_isrInstalled = false;
82 }
83