Component: Barometer (BMP280 / Grove 101020192) (101020192) (Environmental)

Author	Matrix TSL
Version	8.0
Category	Environmental

Barometer (BMP280 / Grove 101020192) component

Barometric pressure sensor with a I2C bus interface. Pressure range 300 to 1100 hPa. Temperature range -40 to +85 ?C.

Version information

Library Version, Component Version, Date, Author, Info
7,7.0, 27-06-24, MW, Removed all  references to humidity as not present within BMP280.
8,8.0, 27-06-24, MW, Added Ev_initialise API, setting the pressure of the library sensor to an inital value of 300.

Detailed description

No detailed description exists yet for this component

Examples

No additional examples

Macro reference

Altitude

	Altitude
Calculates the altitude based on difference between actual pressure and the pressure at the sea level P0=1013.25 hPa.
- FLOAT	Return

Forced_Read

	Forced_Read

- VOID	Return

I2C_Read_Register

	I2C_Read_Register
Reads a byte value from a register on the device
- BYTE	Address

- BYTE	Return

I2C_Write_Register

	I2C_Write_Register
Writes a byte value to a register on the device
- BYTE	Address

- BYTE	Value

- VOID	Return

Initialise

	Initialise
Starts up the I2C bus and initialises the pressure sensor ready for use. Returns 1 for a sucessful startup. Returns 0 for a failed startup or no device detected.
- BYTE	Return

ReadPressureFloat

	ReadPressureFloat
Reads the pressure as a floating point value in Bars. Calls the ReadPressureRaw function and then converts to a meaningful value.
- FLOAT	Return

ReadTemperatureFloat

	ReadTemperatureFloat
Reads the temperature as a floating point value in °C. Resultion sets the return bit value and conversion time. Calls the ReadTemperatureRaw function and then converts to a meaningful value.
- FLOAT	Return

Reset

	Reset
Resets the device
- VOID	Return

Property reference

	Properties
	I2C Properties
	Slave Address

	Channel
Channel selection
	SDA
Pin used for SDA (data signal)
	SCL
Pin used for SCL (clock signal)
	Baud Select
Baud rate option selector
	Baud Rate
Baud rate to be used
	Stop Delay
On older microcontroller devices there is a potential for the I2C hardware channel to lock up if there is not a 10ms delay between an I2C stop event and the next I2C start event. Most modern microcontrollers will not have a problem so this property can be disabled to speed up the I2C communications.
	Sensor Properties
	Compensation
Compensation formulas in double precision floating point or 32 bit fixed point
	Pressure Oversampling

	Temperature Oversampling

	Mode

	Standby Normal Mode (ms)

	Filter Coefficient

	Simulation
	Simulate Comms
Allows the simulation data to come from the panel GUI or relayed via an injector component.