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0e52ea619b
Added the C source for the gsr sensor with necessary changes to cmake,
examples, docs.
* Renamed all files with grovegsr to gsr
* Replaced all instances of grovegsr with gsr
* Added C source for gsr sensor
* Updated all cmake files
* Added C example for gsr sensor
* Fixed C++ threshold method from throwing on a successfull aio read
Signed-off-by: Noel Eck <noel.eck@intel.com>
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/*
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* Author: Zion Orent <zorent@ics.com>
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* Copyright (c) 2015 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <iostream>
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#include <string>
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#include <stdexcept>
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#include "gsr.hpp"
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using namespace upm;
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using namespace std;
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GSR::GSR(int pin)
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{
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if ( !(m_aio = mraa_aio_init(pin)) )
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throw std::invalid_argument(std::string(__FUNCTION__) +
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": mraa_aio_init() failed, invalid pin?");
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}
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GSR::~GSR()
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{
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mraa_aio_close(m_aio);
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}
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void GSR::calibrate()
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{
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int val, threshold, sum = 0;
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for(int i=0; i<500; i++)
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{
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val = mraa_aio_read(m_aio);
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if (val < 0)
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throw std::runtime_error(std::string(__FUNCTION__) +
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": Failed to do an aio read.");
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sum += val;
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usleep(5000);
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}
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threshold = sum / 500;
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cout << "Threshold = " << threshold << endl;
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}
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int GSR::value()
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{
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int val = mraa_aio_read(m_aio);
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return val;
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}
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