mirror of
https://github.com/sigmasternchen/MH-Z-CO2-Sensors
synced 2025-03-15 06:38:55 +00:00
8a063e7c27
* added possibility to set Range, to enable/disable Autocalibrate and to calibrate maually ( see Datasheet v 1.2 : https://www.winsen-sensor.com/d/files/MH-Z14A.pdf * Update MHZ.cpp * Update MHZ.cpp * Update MHZ.h added calibrate Span, for complete functionality but commented out , due to professional use (req. constant atmosphere with 2k, 5k or 10k ppm CO2.). corrected the bugs in MHZ.cpp also. * Update MHZ.cpp Added comments for Sensors with specific firmware. Co-authored-by: Christoph Schultz <christoph@schultz1-christoph.de>
57 lines
1.2 KiB
C++
57 lines
1.2 KiB
C++
/* MHZ library
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By Tobias Schürg
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*/
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#ifndef MHZ_H
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#define MHZ_H
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#if ARDUINO >= 100
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#include "Arduino.h"
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#else
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#include "WProgram.h"
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#endif
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#include <SoftwareSerial.h>
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// types of sensors.
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extern const int MHZ14A;
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extern const int MHZ19B;
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extern const int MHZ_2K;
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extern const int MHZ_5k;
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extern const int MHZ_10K;
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// status codes
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extern const int STATUS_NO_RESPONSE;
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extern const int STATUS_CHECKSUM_MISMATCH;
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extern const int STATUS_INCOMPLETE;
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extern const int STATUS_NOT_READY;
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class MHZ {
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public:
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MHZ(uint8_t rxpin, uint8_t txpin, uint8_t pwmpin, uint8_t type);
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MHZ(uint8_t rxpin, uint8_t txpin, uint8_t type);
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MHZ(uint8_t pwmpin, uint8_t type);
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MHZ(Stream * serial, uint8_t pwmpin, uint8_t type);
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MHZ(Stream * serial, uint8_t type);
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void setDebug(boolean enable);
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boolean isPreHeating();
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boolean isReady();
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void setAutoCalibrate(boolean b);
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void calibrateZero();
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void setRange(int range);
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// void calibrateSpan(int range); //only for professional use... see implementation and Dataheet.
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int readCO2UART();
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int readCO2PWM();
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int getLastTemperature();
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private:
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uint8_t _pwmpin, _type, temperature;
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boolean debug = false;
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Stream * _serial;
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byte getCheckSum(byte *packet);
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};
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#endif
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