upm/src/th02/th02.h

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/*
* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Credits to Seeed Studeo.
*
* 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/i2c.h>
#define ADDR 0x40 // device address
#define REG_STATUS 0x00
#define REG_DATA_H 0x01
#define REG_DATA_L 0x02
#define REG_CONFIG 0x03
#define REG_ID 0x11
#define STATUS_RDY_MASK 0x01
#define CMD_MEASURE_HUMI 0x01
#define CMD_MEASURE_TEMP 0x11
#define TH02_WR_REG_MODE 0xC0
#define TH02_RD_REG_MODE 0x80
#define HIGH 1
#define LOW 0
namespace upm {
/**
* @brief th02 temperature & humidity sensor library
* @defgroup th02 libupm-th02
*/
/**
* @brief C++ API for TH02 chip (Temperature and Humidity Sensor Pro)
*
* This file defines the TH02 C++ interface for libth02
*
* @ingroup th02
* @snippet th02.cxx Interesting
*/
class TH02 {
public:
/**
* Instanciates a TH02 object
*/
TH02 ();
/**
* TH02 object destructor, basicaly it close i2c connection.
*/
~TH02 ();
/**
* Get the temperature value from sensor.
*/
float getTemperature ();
/**
* Get the humidity value from sensor.
*/
float getHumidity ();
/**
* Get the sensor's status.
*/
bool getStatus ();
/**
* Return name of the component
*/
std::string name()
{
return m_name;
}
private:
std::string m_name;
mraa_i2c_context m_i2Ctx;
uint16_t i2cReadReg_N (int reg, unsigned int len, uint8_t * buffer);
mraa_result_t i2cWriteReg_N (uint8_t reg, unsigned int len, uint8_t * buffer);
mraa_result_t i2cWriteReg (uint8_t reg, uint8_t data);
};
}