1 /*
2  * Author: Zion Orent <zorent@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 <iostream>
26 #include <string>
27 #include <stdexcept>
28 
29 #include "groveemg.h"
30 
31 using namespace upm;
32 using namespace std;
33 
GroveEMG(int pin)34 GroveEMG::GroveEMG(int pin)
35 {
36     if ( !(m_aio = mraa_aio_init(pin)) )
37     {
38       throw std::invalid_argument(std::string(__FUNCTION__) +
39                                   ": mraa_aio_init() failed, invalid pin?");
40       return;
41     }
42 }
43 
~GroveEMG()44 GroveEMG::~GroveEMG()
45 {
46   mraa_aio_close(m_aio);
47 }
48 
calibrate()49 void GroveEMG::calibrate()
50 {
51 	int val, sum = 0;
52 
53 	for (int i=0; i<1100; i++)
54 	{
55 		val = mraa_aio_read(m_aio);
56 		sum += val;
57 		usleep(1000);
58 	}
59 	sum /= 1100;
60 	cout << "Static analog data = " << sum << endl;
61 }
62 
value()63 int GroveEMG::value()
64 {
65 	int val = mraa_aio_read(m_aio);
66 	return val;
67 }
68