Jump to content

Component: Gyroscope 3-Axis I2C (L3GD20) (Movement Orientation)

From Flowcode Help
Revision as of 14:36, 13 July 2026 by SteveT (talk | contribs) (Text replacement - "style="background-color:#EAE1EA;"" to "class="mtx-class-propfolder"")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Author Matrix TSL
Version 1.0
Category Movement Orientation


Gyroscope 3-Axis I2C (L3GD20) component

Interface to the L3GD20 three axis digital gyroscope. Panel GUI can be used to simulate incoming data for testing.

Component Source Code

Please click here to download the component source project: FC_Comp_Source_Gyroscope_L3GD20_I2C.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_Gyroscope_L3GD20_I2C.fcfx

Detailed description

No detailed description exists yet for this component

Examples

No additional examples








Macro reference

GetGyroReading

GetGyroReading
Collects one of the gyroscope readings from the last sample. 
- BYTE Axis
0=X, 1=Y, 2=Z 
- INT Return


Initialise

Initialise
Initialise the component. Returns 0 if successful 
- BYTE Return


ReadRegister

ReadRegister
Read the data byte at the given address of the device 
- BYTE Reg
address of the register to be read 
- BYTE Return


SampleDevice

SampleDevice
Reads the Axis data from the device. 
- BYTE Return


WriteRegister

WriteRegister
Writes the data byte to the given address of the device. Returns 0 if successful 
- BYTE Reg
address of register to be written with data byte 
- BYTE data
data byte to be written to device register 
- BYTE Return


Property reference

Properties
Output Data Rate
Specifies the gryoscope sample data rate 
Full Scale Selection
Specifies the maximum angular speed which the sensor can measure in degrees per second 
Bandwidth Selection
Linked with data rate, See device datasheet table 21. 
Filter Enable
Enables automatic internal filtering on the gyro data 
X Axis
Enables or disables the selected axis allowing it to generate data or be switched off to save power. 
Y Axis
Enables or disables the selected axis allowing it to generate data or be switched off to save power. 
Z Axis
Enables or disables the selected axis allowing it to generate data or be switched off to save power. 
Connection
Address Pin
The state of the SDO address pin. 0 = Connected to GND 1 = Connected to VCC 
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.  
Simulation
Label
 
Simulate Comms
Controls where the simulation data comes from. Component GUI - Data comes from the sliders on the component panel GUI API - Comms data is sent and received via an API component