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 "grovewater.h"
30
31using namespace upm;
32using namespace std;
33
34GroveWater::GroveWater(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}
45
46GroveWater::~GroveWater()
47{
48  mraa_gpio_close(m_gpio);
49}
50
51bool GroveWater::isWet()
52{
53  return (!mraa_gpio_read(m_gpio) ? true : false);
54}
55