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/*
* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#pragma once
#include <string>
#include <mraa/aio.hpp>
#include <mraa/gpio.hpp>
#include <mraa/spi.hpp>
#define HIGH 1
#define LOW 0
namespace upm {
/**
* @brief MAX31723 Temperature Sensor library
* @defgroup max31723 libupm-max31723
* @ingroup maxim spi temperature
*/
/**
* @library max31723
* @sensor max31723
* @comname MAX31723 Temperature Sensor
* @type temperature
* @man maxim
* @con spi
*
* @brief API for the MAX31723 Temperature Sensor
*
* Maxim Integrated*
* [MAX31723](http://datasheets.maximintegrated.com/en/ds/MAX31722-MAX31723.pdf)
* is a low-voltage 3-wire/SPI temperature sensor controller. This module was
* tested on the Maxim Integrated [MAX31732PMB1 PMOD
* module](http://datasheets.maximintegrated.com/en/ds/MAX31723PMB1.pdf) from
* the analog PMOD kit.
*
* @snippet max31723.cxx Interesting
*/
class MAX31723 {
public:
static const uint8_t R_STS_READ_CMD = 0x00;
static const uint8_t R_STS_WRITE_CMD = 0x80;
static const uint8_t R_TEMPERATURE_LSB = 0x01;
static const uint8_t R_TEMPERATURE_MSB = 0x02;
static const uint8_t B_CONT_READING = 0x00;
/**
* Instantiates an MAX31723 object
*
* @param bus Number of the used bus
* @param devAddr Address of the used I2C device
*/
MAX31723 (int csn);
/**
* MAXDS3231M object destructor; basically, it closes the I2C connection.
* it is not needed anymore, as the connections will be closed when
* m_spi and m_csnPinCtx variables will go out of scope
* ~MAX31723 ();
**/
/**
* Gets the on-board temperature.
*/
short getTemperature ();
/**
* Returns the name of the component
*/
std::string name()
{
return m_name;
}
private:
std::string m_name;
mraa::Spi m_spi;
mraa::Gpio m_csnPinCtx;
uint8_t readRegister (uint8_t reg);
void writeRegister (uint8_t reg, uint8_t data);
/**
* Sets the chip select pin to LOW
*/
mraa::Result CSOn ();
/**
* Sets the chip select pin to HIGH
*/
mraa::Result CSOff ();
};
}
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