Component: Barometer (BMP180) (Environmental): Difference between revisions

Revision as of 14:23, 13 July 2026

Author	Matrix TSL
Version	1.1
Category	Environmental

Barometer (BMP180) component

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

Component Source Code

Please click here to download the component source project: FC_Comp_Source_Pressure_Sensor_BMP180.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_Pressure_Sensor_BMP180.fcfx

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
	Humidity Oversampling

	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.

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 | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Altitude'''
+| width="90%" class="mtx-class-macrohead" | '''Altitude'''
 |-
 | colspan="2" | Calculates the altitude based on difference between actual pressure and the pressure at the sea level P0=1013.25 hPa. &nbsp;
@@ Line 103: / Line 103: @@
 |-
 | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Forced_Read'''
+| width="90%" class="mtx-class-macrohead" | '''Forced_Read'''
 |-
 | colspan="2" | &nbsp;
@@ Line 117: / Line 117: @@
 |-
 | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''I2C_Read_Register'''
+| width="90%" class="mtx-class-macrohead" | '''I2C_Read_Register'''
 |-
 | colspan="2" | Reads a byte value from a register on the device&nbsp;
@@ Line 136: / Line 136: @@
 |-
 | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''I2C_Write_Register'''
+| width="90%" class="mtx-class-macrohead" | '''I2C_Write_Register'''
 |-
 | colspan="2" | Writes a byte value to a register on the device&nbsp;
@@ Line 160: / Line 160: @@
 |-
 | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Initialise'''
+| width="90%" class="mtx-class-macrohead" | '''Initialise'''
 |-
 | colspan="2" | 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.&nbsp;
@@ Line 174: / Line 174: @@
 |-
 | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''ReadPressureFloat'''
+| width="90%" class="mtx-class-macrohead" | '''ReadPressureFloat'''
 |-
 | colspan="2" | Reads the pressure as a floating point value in Bars. Calls the ReadPressureRaw function and then converts to a meaningful value.&nbsp;
@@ Line 188: / Line 188: @@
 |-
 | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''ReadTemperatureFloat'''
+| width="90%" class="mtx-class-macrohead" | '''ReadTemperatureFloat'''
 |-
 | colspan="2" | 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.&nbsp;
@@ Line 202: / Line 202: @@
 |-
 | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Reset'''
+| width="90%" class="mtx-class-macrohead" | '''Reset'''
 |-
 | colspan="2" | Resets the device&nbsp;
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 |-
 | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-prop-icon.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Properties'''
+| width="90%" class="mtx-class-macrohead" | '''Properties'''
 |-
 |-

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