mirror of https://github.com/arendst/Tasmota.git
114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
/* Blue Robotics Arduino MS5837-30BA Pressure/Temperature Sensor Library
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------------------------------------------------------------
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Title: Blue Robotics Arduino MS5837-30BA Pressure/Temperature Sensor Library
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Description: This library provides utilities to communicate with and to
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read data from the Measurement Specialties MS5837-30BA pressure/temperature
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sensor.
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Authors: Rustom Jehangir, Blue Robotics Inc.
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Adam Šimko, Blue Robotics Inc.
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-------------------------------
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The MIT License (MIT)
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Copyright (c) 2015 Blue Robotics Inc.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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-------------------------------*/
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#ifndef MS5837_H_BLUEROBOTICS
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#define MS5837_H_BLUEROBOTICS
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#include "Arduino.h"
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#include <Wire.h>
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class MS5837 {
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public:
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static const float Pa;
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static const float bar;
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static const float mbar;
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static const uint8_t MS5837_30BA;
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static const uint8_t MS5837_02BA;
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static const uint8_t MS5837_UNRECOGNISED;
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MS5837();
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bool init(TwoWire &wirePort = Wire);
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bool begin(TwoWire &wirePort = Wire); // Calls init()
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/** Set model of MS5837 sensor. Valid options are MS5837::MS5837_30BA (default)
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* and MS5837::MS5837_02BA.
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*/
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void setModel(uint8_t model);
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uint8_t getModel();
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/** Provide the density of the working fluid in kg/m^3. Default is for
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* seawater. Should be 997 for freshwater.
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*/
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void setFluidDensity(float density);
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/** The read from I2C takes up to 40 ms, so use sparingly is possible.
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*/
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void read();
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/** Pressure returned in mbar or mbar*conversion rate.
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*/
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float pressure(float conversion = 1.0f);
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/** Temperature returned in deg C.
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*/
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float temperature();
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/** Depth returned in meters (valid for operation in incompressible
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* liquids only. Uses density that is set for fresh or seawater.
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*/
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float depth();
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/** Altitude returned in meters (valid for operation in air only).
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*/
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float altitude();
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uint8_t crc4(uint16_t n_prom[]);
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private:
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//This stores the requested i2c port
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TwoWire * _i2cPort;
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uint16_t C[8];
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uint32_t D1_pres, D2_temp;
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int32_t TEMP;
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int32_t P;
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uint8_t _model;
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float fluidDensity;
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/** Performs calculations per the sensor data sheet for conversion and
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* second order compensation.
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*/
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void calculate();
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//uint8_t crc4(uint16_t n_prom[]);
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};
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#endif
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