mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-09-19 16:46:11 -04:00
120 lines
2.0 KiB
C++
120 lines
2.0 KiB
C++
#pragma once
|
|
//
|
|
// FILE: MHZCO2.h
|
|
// AUTHOR: Rob Tillaart
|
|
// VERSION: 0.2.1
|
|
// PURPOSE: Arduino Library for MHZ series CO2 sensors
|
|
// DATE: 2020-05-05
|
|
// URL: https://github.com/RobTillaart/MHZCO2
|
|
//
|
|
|
|
#include "Arduino.h"
|
|
|
|
#define MHZCO2_LIB_VERSION (F("0.2.1"))
|
|
|
|
#define MHZCO2_OK 0
|
|
#define MHZCO2_TIMEOUT -10
|
|
#define MHZCO2_ERROR_CRC -11
|
|
|
|
|
|
class MHZCO2
|
|
{
|
|
public:
|
|
MHZCO2();
|
|
// Stream is either a HW or SW serial.
|
|
void begin(Stream * str);
|
|
uint32_t uptime();
|
|
|
|
|
|
// PPM = 2000, 5000, 10000 (other values unknown)
|
|
// check datasheet
|
|
void setPPM(uint16_t PPM);
|
|
uint16_t getPPM();
|
|
|
|
|
|
// MEASUREMENT
|
|
int measure();
|
|
uint32_t lastMeasurement();
|
|
int getCO2();
|
|
int getTemperature();
|
|
int getAccuracy();
|
|
int getMinCO2();
|
|
|
|
|
|
// CALIBRATION
|
|
// USE WITH CARE => READ DATASHEET!
|
|
void calibrateZero();
|
|
void calibrateSpan(uint16_t span);
|
|
void calibrateAuto(bool mode = true);
|
|
|
|
// default = 1000 millisecond
|
|
// depending on baud rate (9600) low values may fail
|
|
// 0 means no time ut check.
|
|
void setTimeOut(uint16_t timeout = 1000);
|
|
uint16_t getTimeOut();
|
|
|
|
|
|
protected:
|
|
Stream * _str = NULL;
|
|
uint32_t _startTime = 0;
|
|
uint32_t _lastMeasurement = 0;
|
|
uint16_t _timeout = 1000;
|
|
|
|
uint16_t _PPM = 0;
|
|
int _CO2 = 0;
|
|
int _temperature = 0;
|
|
int _accuracy = 0;
|
|
int _minCO2 = 0;
|
|
|
|
void send(uint8_t * data, uint8_t len);
|
|
int receive(uint8_t * answer);
|
|
uint8_t checksum(uint8_t * arr);
|
|
};
|
|
|
|
|
|
|
|
/////////////////////////////////////////////////////////
|
|
//
|
|
// DERIVED CLASSES
|
|
//
|
|
class MHZ1311A : public MHZCO2
|
|
{
|
|
public:
|
|
MHZ1311A();
|
|
};
|
|
|
|
|
|
class MHZ19 : public MHZCO2
|
|
{
|
|
public:
|
|
MHZ19();
|
|
};
|
|
|
|
class MHZ19B : public MHZCO2
|
|
{
|
|
public:
|
|
MHZ19B();
|
|
};
|
|
|
|
class MHZ19C : public MHZCO2
|
|
{
|
|
public:
|
|
MHZ19C();
|
|
};
|
|
|
|
class MHZ19D : public MHZCO2
|
|
{
|
|
public:
|
|
MHZ19D();
|
|
};
|
|
|
|
class MHZ19E : public MHZCO2
|
|
{
|
|
public:
|
|
MHZ19E();
|
|
};
|
|
|
|
|
|
|
|
// -- END OF FILE --
|