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141 lines
3.8 KiB
C++
141 lines
3.8 KiB
C++
/*
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* Author: Scott Ware <scott.r.ware@intel.com>
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* Copyright (c) 2014 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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#pragma once
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#include <mraa/i2c.hpp>
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#include "upm/iTemperatureSensor.hpp"
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#include "upm/iHumiditySensor.hpp"
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/* ADDRESS AND NOT_FOUND VALUE */
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#define SI7005_ADDRESS ( 0x40 )
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#define SI7005_NOT_FOUND ( 0x00 )
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namespace upm {
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/**
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* @brief Si7005 digital I2C humidity and temperature sensor library
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* @defgroup si7005 libupm-si7005
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* @ingroup i2c silabs temp itemperaturesensor
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*/
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/**
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* @library si7005
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* @sensor si7005
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* @comname Silicon Labs Si7005 Humidity And Temperature Sensor
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* @altname Si7005
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* @type temp
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* @man silabs
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* @con i2c
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* @if itemperaturesensor
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*
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* @brief C++ API for SI7005 sensor (Humidity And Temperature Sensor)
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*
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* The Silicon Labs Si7005
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* [SI7005](https://www.silabs.com/Support%20Documents/TechnicalDocs/Si7005.pdf)
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* is a digital relative humidity and temperature sensor.
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*
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* @snippet si7005.cxx Interesting
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*/
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class SI7005 : public ITemperatureSensor, public IHumiditySensor {
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public:
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/**
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* Instantiates a SI7005 object
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*
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* @param bus number of used bus
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* @param devAddr address of used i2c device
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* @param pin mraa gpio number for chip select pin
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*/
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SI7005 (int bus, int pin);
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/**
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* SI7005 object destructor.
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*/
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~SI7005 ();
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/**
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* Get temperature measurement.
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*/
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uint16_t getTemperatureRaw ();
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/**
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* Get temperature measurement.
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*/
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int getTemperatureCelsius ();
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/**
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* Get relative humidity measurement.
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*/
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uint16_t getHumidityRaw ();
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/**
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* Get relative humidity measurement.
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*/
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int getHumidityRelative ();
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/**
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* Returns sensor module name
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*/
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const char* getModuleName() { return "si7005"; }
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/**
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* Detects the sensor to ensure it is connected as required.
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*/
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bool isAvailable();
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/**
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* Enables the integrated heating element.
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*/
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void enableHeater();
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/**
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* Disables the integrated heating element.
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*/
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void disableHeater();
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/**
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* Enables fast conversion mode.
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*/
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void enableFastConversionMode();
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/**
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* Enables fast conversion mode.
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*/
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void disableFastConversionMode();
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private:
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int m_controlAddr;
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int m_bus;
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int m_pin;
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mraa::I2c* m_i2c;
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mraa::Result status;
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uint8_t config_reg;
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float last_temperature;
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uint16_t getMeasurement(uint8_t configValue);
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};
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}
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