MHZ16 Class Reference

API support for the Grove CO2 sensor. More...

Detailed Description

• ID: mhz16
• Name: Grove CO2 Sensor
• Other Names: MHZ16 Serial CO2 Sensor
• Category: gaseous
• Manufacturer: seeed
• Connection: uart

This class implements support for the Grove CO2 sensor.

Its CO2 detection range is 0-2,000 ppm. It requires a 2-3 minute warm-up time before reporting valid data.

Public Member Functions
synchronized void	delete ()
	MHZ16 (int uart)
boolean	dataAvailable (long millis)
int	readData (byte[] buffer)
int	writeData (byte[] buffer)
boolean	setupTty (int baud)
boolean	setupTty ()
boolean	verifyPacket (byte[] pkt)
boolean	getData ()
int	getGas ()
int	getTemperature ()
void	calibrateZeroPoint ()

Constructor & Destructor Documentation

MHZ16

(

int

uart

)

MHZ16 constructor

Parameters

uart	Default UART to use (0 or 1)

Member Function Documentation

void calibrateZeroPoint

(

)

Sets the zero point of the sensor

boolean dataAvailable

(

long

millis

)

Checks to see if there is data available for reading

Parameters

millis

Number of milliseconds to wait; 0 means no waiting.

Returns

True if there is data available for reading

boolean getData

(

)

Queries the sensor and gets the gas (CO2) concentration and temperature data. Should be called before other "get" functions.

Returns

True if successful

int getGas

(

)

Returns the gas (CO2) concentration data.

Returns

Gas concentration

int getTemperature

(

)

Returns the temperature data.

Returns

Temperature in Celsius

boolean setupTty

(

int

baud

)

Sets up proper tty I/O modes and the baud rate. The default baud rate is 9,600 (B9600).

Parameters

baud	Desired baud rate.

Returns

True if successful

---

The documentation for this class was generated from the following file:

• /var/lib/jenkins/workspace/upm-doc-stable/build-33/src/mhz16/MHZ16.java