mirror of
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922e0cc26b
To make room for UPM C and C++ sensor code to coexist, all UPM
C++ headers have been renamed from h -> hpp. This commit contains
updates to documentation, includes, cmake collateral, examples, and
swig interface files.
* Renamed all cxx/cpp header files which contain the string
'copyright intel' from .h -> .hpp (if not already hpp).
* Replaced all references to .h with .hpp in documentation,
source files, cmake collateral, example code, and swig interface
files.
* Replaced cmake variable module_h with module_hpp.
* Intentionally left upm.h since this file currently does not
contain code (documentation only).
Signed-off-by: Noel Eck <noel.eck@intel.com>
125 lines
3.4 KiB
C++
125 lines
3.4 KiB
C++
/*
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* Author: Jon Trulson <jtrulson@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 "ht9170.hpp"
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using namespace upm;
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using namespace std;
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HT9170::HT9170(int dr, int o1, int o2, int o3, int o4)
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{
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// init the gpio's we will need
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if ( !(m_dr = mraa_gpio_init(dr)) )
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{
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throw std::invalid_argument(std::string(__FUNCTION__) +
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": mraa_gpio_init(dr) failed, invalid pin?");
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return;
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}
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mraa_gpio_dir(m_dr, MRAA_GPIO_IN);
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if ( !(m_o1 = mraa_gpio_init(o1)) )
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{
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throw std::invalid_argument(std::string(__FUNCTION__) +
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": mraa_gpio_init(o1) failed, invalid pin?");
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return;
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}
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mraa_gpio_dir(m_o1, MRAA_GPIO_IN);
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if ( !(m_o2 = mraa_gpio_init(o2)) )
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{
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throw std::invalid_argument(std::string(__FUNCTION__) +
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": mraa_gpio_init(o2) failed, invalid pin?");
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return;
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}
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mraa_gpio_dir(m_o2, MRAA_GPIO_IN);
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if ( !(m_o3 = mraa_gpio_init(o3)) )
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{
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throw std::invalid_argument(std::string(__FUNCTION__) +
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": mraa_gpio_init(o3) failed, invalid pin?");
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return;
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}
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mraa_gpio_dir(m_o3, MRAA_GPIO_IN);
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if ( !(m_o4 = mraa_gpio_init(o4)) )
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{
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throw std::invalid_argument(std::string(__FUNCTION__) +
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": mraa_gpio_init(o4) failed, invalid pin?");
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return;
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}
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mraa_gpio_dir(m_o4, MRAA_GPIO_IN);
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}
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HT9170::~HT9170()
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{
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mraa_gpio_close(m_dr);
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mraa_gpio_close(m_o1);
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mraa_gpio_close(m_o2);
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mraa_gpio_close(m_o3);
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mraa_gpio_close(m_o4);
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}
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bool HT9170::digitReady()
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{
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return (mraa_gpio_read(m_dr) ? true : false);
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}
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char HT9170::decodeDigit()
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{
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// This lookup table is derived from the decode table on page 7 of
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// the HT9170B/HT9170D datasheet.
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static const char decode[16] = {
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'D', // 0
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'1', // 1
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'2', // 2
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'3', // 3
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'4', // 4
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'5', // 5
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'6', // 6
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'7', // 7
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'8', // 8
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'9', // 9
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'0', // 10
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'*', // 11
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'#', // 12
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'A', // 13
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'B', // 14
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'C' // 15
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};
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uint8_t bits = 0;
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bits = mraa_gpio_read(m_o1);
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bits |= (mraa_gpio_read(m_o2) << 1);
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bits |= (mraa_gpio_read(m_o3) << 2);
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bits |= (mraa_gpio_read(m_o4) << 3);
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return decode[bits];
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}
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