Component: Accelerometer 3-Axis (MMA8452Q) (Movement Orientation): Difference between revisions
m Text replacement - "width="10%" align="center" style="background-color:#D8C9D8;"" to "width="10%" align="center" class="mtx-class-macrohead"" |
m Text replacement - "style="background-color:#EAE1EA;"" to "class="mtx-class-propfolder"" |
||
| (2 intermediate revisions by the same user not shown) | |||
| Line 97: | Line 97: | ||
|- | |- | ||
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''CollectXYZData''' | ||
|- | |- | ||
| colspan="2" | Collect the data from the local accelerometer buffers. The Axis parameter specifies the Axis to be read. 0 / 'x' / 'X' - X axis 1 / 'y' / 'Y' - Y axis 2 / 'z' / 'Z' - Z axis | | colspan="2" | Collect the data from the local accelerometer buffers. The Axis parameter specifies the Axis to be read. 0 / 'x' / 'X' - X axis 1 / 'y' / 'Y' - Y axis 2 / 'z' / 'Z' - Z axis | ||
| Line 116: | Line 116: | ||
|- | |- | ||
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Initialise''' | ||
|- | |- | ||
| colspan="2" | Sets up up the communication bus and initialises the accelerometer module. Returns 0 for success and > 0 for fail. | | colspan="2" | Sets up up the communication bus and initialises the accelerometer module. Returns 0 for success and > 0 for fail. | ||
| Line 130: | Line 130: | ||
|- | |- | ||
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Read_N_Registers''' | ||
|- | |- | ||
| colspan="2" | Reads a set of data values from sequential registers on the accelerometer | | colspan="2" | Reads a set of data values from sequential registers on the accelerometer | ||
| Line 159: | Line 159: | ||
|- | |- | ||
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Read_Register''' | ||
|- | |- | ||
| colspan="2" | Reads a value from a register on the accelerometer. | | colspan="2" | Reads a value from a register on the accelerometer. | ||
| Line 178: | Line 178: | ||
|- | |- | ||
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''SimReset1G''' | ||
|- | |- | ||
| colspan="2" | Resets the simulation to 0.0 on X and Y and 1.0 on Z as if the accelerometer was sitting completely horizontal. | | colspan="2" | Resets the simulation to 0.0 on X and Y and 1.0 on Z as if the accelerometer was sitting completely horizontal. | ||
| Line 192: | Line 192: | ||
|- | |- | ||
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''SimSetXYZ''' | ||
|- | |- | ||
| colspan="2" | Allows the XYZ slider values to be set via the simulation | | colspan="2" | Allows the XYZ slider values to be set via the simulation | ||
| Line 221: | Line 221: | ||
|- | |- | ||
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''UpdateXYZData''' | ||
|- | |- | ||
| colspan="2" | Reads from the accelerometer and updates the local XYZ variables. Returns 1 for new data and 0 for no new data | | colspan="2" | Reads from the accelerometer and updates the local XYZ variables. Returns 1 for new data and 0 for no new data | ||
| Line 235: | Line 235: | ||
|- | |- | ||
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Write_Register''' | ||
|- | |- | ||
| colspan="2" | Writes a data value to a specific register on the accelerometer | | colspan="2" | Writes a data value to a specific register on the accelerometer | ||
| Line 260: | Line 260: | ||
|- | |- | ||
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-prop-icon.png]] | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-prop-icon.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Properties''' | ||
|- | |- | ||
|- | |- | ||
| Line 283: | Line 283: | ||
| colspan="2" | Sets if we use the interrupt pin to check if new data is available | | colspan="2" | Sets if we use the interrupt pin to check if new data is available | ||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]] | ||
| width="90%" | | width="90%" class="mtx-class-propfolder" | Connections | ||
|- | |- | ||
|- | |- | ||
| Line 292: | Line 292: | ||
| colspan="2" | | | colspan="2" | | ||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]] | ||
| width="90%" | | width="90%" class="mtx-class-propfolder" | I2C Connections | ||
|- | |- | ||
|- | |- | ||
| Line 336: | Line 336: | ||
| 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. | ||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]] | ||
| width="90%" | | width="90%" class="mtx-class-propfolder" | Simulation | ||
|- | |- | ||
|- | |- | ||
Latest revision as of 14:36, 13 July 2026
| Author | Matrix Ltd. |
| Version | 2.0 |
| Category | Movement Orientation |
Accelerometer 3-Axis (MMA8452Q) component
MMA8452Q Accelerometer sensor with I2C. Useful for approximating Pitch and Roll or for detecting acceleration.
Component Source Code
Please click here to download the component source project: FC_Comp_Source_Accelerometer_MMA8452Q.fcfx
Please click here to view the component source code (Beta): FC_Comp_Source_Accelerometer_MMA8452Q.fcfx
Detailed description
No detailed description exists yet for this component
Examples
No additional examples
Macro reference
CollectXYZData
|
CollectXYZData |
| Collect the data from the local accelerometer buffers. The Axis parameter specifies the Axis to be read. 0 / 'x' / 'X' - X axis 1 / 'y' / 'Y' - Y axis 2 / 'z' / 'Z' - Z axis | |
 - BYTE
|
Axis |
 - INT
|
Return |
Initialise
|
|
Initialise |
| Sets up up the communication bus and initialises the accelerometer module. Returns 0 for success and > 0 for fail. | |
| - BYTE
|
Return |
Read_N_Registers
|
|
Read_N_Registers |
| Reads a set of data values from sequential registers on the accelerometer | |
| - BYTE
|
Start_Reg |
| First address to read data from | |
| - BYTE
|
Num_Regs |
| Number of registers to read | |
| - BYTE
|
data |
| Data variable to populate with the register values | |
 - VOID
|
Return |
Read_Register
|
|
Read_Register |
| Reads a value from a register on the accelerometer. | |
| - BYTE
|
Reg |
| Register address to read from | |
| - BYTE
|
Return |
SimReset1G
|
|
SimReset1G |
| Resets the simulation to 0.0 on X and Y and 1.0 on Z as if the accelerometer was sitting completely horizontal. | |
| - VOID
|
Return |
SimSetXYZ
|
|
SimSetXYZ |
| Allows the XYZ slider values to be set via the simulation | |
| - INT
|
X |
| - INT
|
Y |
| - INT
|
Z |
| - VOID
|
Return |
UpdateXYZData
|
|
UpdateXYZData |
| Reads from the accelerometer and updates the local XYZ variables. Returns 1 for new data and 0 for no new data | |
| - BYTE
|
Return |
Write_Register
|
|
Write_Register |
| Writes a data value to a specific register on the accelerometer | |
| - BYTE
|
Reg |
| Register Address to Write to | |
| - BYTE
|
Data |
| Value to write to the register | |
| - VOID
|
Return |
Property reference
|
Properties |
|
Bit Depth |
| The number of binary bits used to store the sensor's X,Y,Z readings. | |
|
Scale |
| The accelerometer readings are scaled based on the maximum amount of G force the sensor can represent. 6G = Bigger gravitational force 2G = Higher resolution | |
|
|
Data Rate |
|
|
Int Option |
| Sets if we use the interrupt pin to check if new data is available | |
|
Connections |
|
|
Device Address |
|
|
I2C Connections |
|
|
Channel |
| Channel selection | |
|
|
Baud Select |
| Baud rate option selector | |
|
|
Baud Rate |
| Baud rate to be used | |
|
SDA |
| Pin used for SDA (data signal) | |
|
|
SDA Remap Pin |
|
|
SCL |
| Pin used for SCL (clock signal) | |
|
|
SCL Remap Pin |
|
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 |
|
|
Simulate Comms |
| Yes: Accelerometer data will come from the simulation component sliders. No: Accelerometer data will come from the CAL component - I2C or SPI - API etc | |