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https://github.com/RobTillaart/Arduino.git
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92 lines
2.2 KiB
C++
92 lines
2.2 KiB
C++
#pragma once
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//
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// FILE: MTP40F.h
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// AUTHOR: Rob Tillaart
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// DATE: 2023-07-25
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// VERSION: 0.2.0
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// PURPOSE: Arduino library for MTP40F CO2 sensor
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// URL: https://github.com/RobTillaart/MTP40F
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#include "Arduino.h"
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#define MTP40F_LIB_VERSION (F("0.2.0"))
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#define MTP40F_DEFAULT_ADDRESS 0x64
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#define MTP40F_OK 0x00
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#define MTP40F_INVALID_AIR_PRESSURE 0x01
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#define MTP40F_INVALID_GAS_LEVEL 0x02
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#define MTP40F_INVALID_CRC 0x10
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#define MTP40F_INVALID_ADDRESS 0xFF
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#define MTP40F_REQUEST_FAILED 0xFFFF
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class MTP40F
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{
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public:
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MTP40F(Stream * stream);
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bool begin();
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int getAirPressureReference();
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bool setAirPressureReference(int apr = 1013);
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uint32_t getGasConcentration(); // returns PPM
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void suppressError(bool se) { _suppressError = se; };
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bool getSuppressError() { return _suppressError; };
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// CALIBRATION FUNCTIONS
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// READ DATASHEET !!
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bool setSinglePointCorrection(uint32_t spc);
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bool getSinglePointCorrectionReady();
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bool openSelfCalibration();
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bool closeSelfCalibration();
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uint8_t getSelfCalibrationStatus();
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bool setSelfCalibrationHours(uint16_t hours = 168);
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uint16_t getSelfCalibrationHours();
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// set timeout of serial communication.
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void setTimeout(uint32_t timeout = 100) { _timeout = timeout; };
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uint32_t getTimeout() { return _timeout; };
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uint32_t lastRead() { return _lastRead; };
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// 2 = MTP40C - other library
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// 3 = MTP40D - other library
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// 5 = MTP40F
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uint8_t getType() { return _type; };
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int lastError();
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//////////////////////////////////////////////////////
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//
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// PROTECTED
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//
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protected:
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Stream * _ser;
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uint8_t _buffer[16];
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uint32_t _timeout = 100;
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uint32_t _lastRead = 0;
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int _airPressureReference = 0;
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uint32_t _gasLevel = 0;
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uint8_t _type = 5;
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bool _suppressError = false;
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int _lastError = MTP40F_OK;
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bool request(uint8_t *data, uint8_t commandLength, uint8_t responseLength);
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uint16_t CRC(uint8_t *data, uint16_t length);
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};
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// -- END OF FILE --
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