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d3b864362d
Previously, the C++ and C versions of this driver were separate. Now the C++ implementation wraps the C implementation. In addition, the C++ init() function has been deprecated. It currently does nothing, and examples have been modified to remove it's calls. This function will be removed in a separate release. The examples have been further modified to update all detected devices and print their respective temperatures, instead of only reporting the on the first device detected. Signed-off-by: Jon Trulson <jtrulson@ics.com>
121 lines
3.5 KiB
C++
121 lines
3.5 KiB
C++
/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2016 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 <stdexcept>
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#include "ds18b20.hpp"
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using namespace upm;
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using namespace std;
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// conversion from celsius to fahrenheit
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static float c2f(float c)
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{
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return (c * (9.0 / 5.0) + 32.0);
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}
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DS18B20::DS18B20(int uart) :
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m_ds18b20(ds18b20_init(uart))
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{
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if (!m_ds18b20)
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throw std::runtime_error(string(__FUNCTION__)
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+ ": ds18b20_init() failed");
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}
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DS18B20::~DS18B20()
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{
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ds18b20_close(m_ds18b20);
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}
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void DS18B20::init()
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{
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// deprecated function. Handled in ctor now.
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}
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void DS18B20::update(int index)
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{
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if (index >= (int)ds18b20_devices_found(m_ds18b20))
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throw std::out_of_range(string(__FUNCTION__)
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+ ": Invalid index");
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ds18b20_update(m_ds18b20, index);
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}
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float DS18B20::getTemperature(unsigned int index, bool fahrenheit)
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{
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if (index >= ds18b20_devices_found(m_ds18b20))
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throw std::out_of_range(string(__FUNCTION__)
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+ ": Invalid index");
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if (fahrenheit)
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return c2f(ds18b20_get_temperature(m_ds18b20, index));
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else
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return ds18b20_get_temperature(m_ds18b20, index);
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}
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void DS18B20::setResolution(unsigned int index, DS18B20_RESOLUTIONS_T res)
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{
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if (index >= ds18b20_devices_found(m_ds18b20))
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{
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throw std::out_of_range(std::string(__FUNCTION__) +
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": device index out of range");
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}
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ds18b20_set_resolution(m_ds18b20, index, res);
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}
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void DS18B20::copyScratchPad(unsigned int index)
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{
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if (index >= ds18b20_devices_found(m_ds18b20))
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{
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throw std::out_of_range(std::string(__FUNCTION__) +
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": device index out of range");
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}
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ds18b20_copy_scratchpad(m_ds18b20, index);
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}
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void DS18B20::recallEEPROM(unsigned int index)
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{
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if (index >= ds18b20_devices_found(m_ds18b20))
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{
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throw std::out_of_range(std::string(__FUNCTION__) +
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": device index out of range");
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}
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ds18b20_recall_eeprom(m_ds18b20, index);
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}
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string DS18B20::getId(unsigned int index)
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{
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if (index >= ds18b20_devices_found(m_ds18b20))
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{
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throw std::out_of_range(std::string(__FUNCTION__) +
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": device index out of range");
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}
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return string((char *)ds18b20_get_id(m_ds18b20, index),
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MRAA_UART_OW_ROMCODE_SIZE);
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}
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