1 /*
2 * Author: Jon Trulson <jtrulson@ics.com>
3 * Copyright (c) 2015 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 <unistd.h>
26 #include <iostream>
27 #include <string>
28 #include <stdexcept>
29
30 #include "sx6119.h"
31
32 using namespace upm;
33 using namespace std;
34
SX6119(int powerPin,int seekPin)35 SX6119::SX6119(int powerPin, int seekPin)
36 {
37 if ( !(m_gpioPower = mraa_gpio_init(powerPin)) )
38 {
39 throw std::invalid_argument(std::string(__FUNCTION__) +
40 ": mraa_gpio_init(power) failed, invalid pin?");
41 return;
42 }
43
44 mraa_gpio_dir(m_gpioPower, MRAA_GPIO_OUT);
45 mraa_gpio_write(m_gpioPower, 1);
46
47 if ( !(m_gpioSeek = mraa_gpio_init(seekPin)) )
48 {
49 throw std::invalid_argument(std::string(__FUNCTION__) +
50 ": mraa_gpio_init(seek) failed, invalid pin?");
51 return;
52 }
53
54 mraa_gpio_dir(m_gpioSeek, MRAA_GPIO_OUT);
55 mraa_gpio_write(m_gpioSeek, 1);
56 }
57
~SX6119()58 SX6119::~SX6119()
59 {
60 mraa_gpio_close(m_gpioPower);
61 mraa_gpio_close(m_gpioSeek);
62 }
63
togglePower()64 void SX6119::togglePower()
65 {
66 // this is just a toggle -- we set LOW for one second and power will
67 // be turned on or off depending on the previous condition.
68 mraa_gpio_write(m_gpioPower, 0);
69 sleep(1);
70 mraa_gpio_write(m_gpioPower, 1);
71 }
72
seek()73 void SX6119::seek()
74 {
75 // this is just a trigger -- we set LOW for 500ms to seek to the
76 // next available station, wrapping around when we reach the end.
77 mraa_gpio_write(m_gpioSeek, 0);
78 usleep(500000);
79 mraa_gpio_write(m_gpioSeek, 1);
80 }
81