Component: Barometer (BMP180) (Environmental): Difference between revisions
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| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Altitude''' | ||
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| colspan="2" | Calculates the altitude based on difference between actual pressure and the pressure at the sea level P0=1013.25 hPa. | | colspan="2" | Calculates the altitude based on difference between actual pressure and the pressure at the sea level P0=1013.25 hPa. | ||
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| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Forced_Read''' | ||
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| width="90%" | | width="90%" class="mtx-class-macrohead" | '''I2C_Read_Register''' | ||
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| colspan="2" | Reads a byte value from a register on the device | | colspan="2" | Reads a byte value from a register on the device | ||
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| width="90%" | | width="90%" class="mtx-class-macrohead" | '''I2C_Write_Register''' | ||
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| colspan="2" | Writes a byte value to a register on the device | | colspan="2" | Writes a byte value to a register on the device | ||
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| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Initialise''' | ||
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| 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. | | 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. | ||
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| width="90%" | | width="90%" class="mtx-class-macrohead" | '''ReadPressureFloat''' | ||
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| colspan="2" | Reads the pressure as a floating point value in Bars. Calls the ReadPressureRaw function and then converts to a meaningful value. | | colspan="2" | Reads the pressure as a floating point value in Bars. Calls the ReadPressureRaw function and then converts to a meaningful value. | ||
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| width="90%" | | width="90%" class="mtx-class-macrohead" | '''ReadTemperatureFloat''' | ||
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| 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. | | 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. | ||
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| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Reset''' | ||
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| colspan="2" | Resets the device | | colspan="2" | Resets the device | ||
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| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Properties''' | ||
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| width="90%" | | width="90%" class="mtx-class-propfolder" | I2C Properties | ||
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| colspan="2" | 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. | | colspan="2" | 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. | ||
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| width="90%" | | width="90%" class="mtx-class-propfolder" | Sensor Properties | ||
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| colspan="2" | | | colspan="2" | | ||
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| width="90%" | | width="90%" class="mtx-class-propfolder" | Simulation | ||
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Latest revision as of 14:36, 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) | |
|
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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. | |