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e51c5f3018
aio: mraa_aio_read (v1.0.0) can now return -1, treat that in sensors using it Adds alot of exceptions if the aio read goes wrong Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com> Signed-off-by: Noel Eck <noel.eck@intel.com>
66 lines
1.8 KiB
C++
66 lines
1.8 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 <unistd.h>
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#include "ina132.hpp"
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using namespace upm;
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using namespace std;
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INA132::INA132(int pin)
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{
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if ( !(m_aio = mraa_aio_init(pin)) )
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{
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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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return;
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}
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}
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INA132::~INA132()
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{
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mraa_aio_close(m_aio);
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}
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float INA132::value()
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{
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int val, i;
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float v, vo;
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float sum=0;
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for(i=0;i<10;i++)
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{
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val = mraa_aio_read(m_aio);
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if (val == -1) return -1;
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v = val*5.00/1023;
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sum += v;
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usleep(10000);
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}
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vo = sum/10;
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return vo;
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}
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