IMU with an Invensense MPU6000 connected via the SPI bus to flightcontroller.
No detailed description...
Example for airframe file
Add to your firmware section: This example contains all possible configuration options, not all of them are mandatory!
<module name="imu_mpu6000">
b'<define name="IMU_MPU_LOWPASS_FILTER" value="MPU60X0_DLPF_256HZ" />\n '
b'<define name="IMU_MPU_SMPLRT_DIV" value="3" />\n '
b'<define name="IMU_MPU_GYRO_RANGE" value="MPU60X0_GYRO_RANGE_2000" />\n '
b'<define name="IMU_MPU_ACCEL_RANGE" value="MPU60X0_ACCEL_RANGE_16G" />\n '
b'<define name="IMU_MPU_USE_MEDIAN_FILTER" value="FALSE" />\n '
b'<configure name="IMU_MPU_SPI_DEV" value="spi1" />\n '
b'<configure name="IMU_MPU_SPI_SLAVE_IDX" value="SPI_SLAVE0" />\n '
</module>
Module configuration options
Configure Options
- name:
IMU_MPU_SPI_DEV
value: spi1
Description: SPI device to use for MPU6000
- name:
IMU_MPU_SPI_SLAVE_IDX
value: SPI_SLAVE0
Description: slave index of the MPU CS pin
Define Options
- name:
IMU_MPU_LOWPASS_FILTER
value: MPU60X0_DLPF_256HZ
Description: DigitalLowPassFilter setting of the MPU
- name:
IMU_MPU_SMPLRT_DIV
value: 3
Description: sample rate divider setting of the MPU
- name:
IMU_MPU_GYRO_RANGE
value: MPU60X0_GYRO_RANGE_2000
Description: gyroscope range setting of the MPU
- name:
IMU_MPU_ACCEL_RANGE
value: MPU60X0_ACCEL_RANGE_16G
Description: accelerometer range setting of the MPU
- name:
IMU_MPU_USE_MEDIAN_FILTER
value: FALSE
Description: Use ONLY in case the MPU has spikes in the raw output due to various reasons. Default is FALSE
Module functions
Init Functions
These initialization functions are called once on startup.
Event Functions
These event functions are called in each cycle of the module event loop.
Periodic Functions
These functions are called periodically at the specified frequency from the module periodic loop.
- imu_mpu_spi_periodic()
- Running at maximum module frequency.
- Autorun: LOCK
Periodic function automatically starts after init and can't be stopped.
Files
Header Files
The following headers are automatically included in modules.h
Source Files
Raw imu_mpu6000.xml file:
<!DOCTYPE module SYSTEM "module.dtd">
<module name="imu_mpu6000" dir="imu" task="sensors">
<doc>
<description>
IMU with an Invensense MPU6000 connected via the SPI bus to flightcontroller.
</description>
<configure name="IMU_MPU_SPI_DEV" value="spi1" description="SPI device to use for MPU6000"/>
<configure name="IMU_MPU_SPI_SLAVE_IDX" value="SPI_SLAVE0" description="slave index of the MPU CS pin"/>
<define name="IMU_MPU_LOWPASS_FILTER" value="MPU60X0_DLPF_256HZ" description="DigitalLowPassFilter setting of the MPU"/>
<define name="IMU_MPU_SMPLRT_DIV" value="3" description="sample rate divider setting of the MPU"/>
<define name="IMU_MPU_GYRO_RANGE" value="MPU60X0_GYRO_RANGE_2000" description="gyroscope range setting of the MPU"/>
<define name="IMU_MPU_ACCEL_RANGE" value="MPU60X0_ACCEL_RANGE_16G" description="accelerometer range setting of the MPU"/>
<define name="IMU_MPU_USE_MEDIAN_FILTER" value="FALSE" description="Use ONLY in case the MPU has spikes in the raw output due to various reasons. Default is FALSE"/>
</doc>
<dep>
<depends>spi_master,imu_common</depends>
<provides>imu</provides>
</dep>
<header>
<file name="imu_mpu6000.h"/>
</header>
<init fun="imu_mpu_spi_init()"/>
<periodic fun="imu_mpu_spi_periodic()"/>
<event fun="imu_mpu_spi_event()"/>
<makefile target="!sim|nps|fbw">
<configure name="IMU_MPU_SPI_DEV" default="spi1" case="lower|upper"/>
<configure name="IMU_MPU_SPI_SLAVE_IDX" default="SPI_SLAVE0"/>
<define name="IMU_MPU_SPI_DEV" value="$(IMU_MPU_SPI_DEV_LOWER)"/>
<define name="USE_$(IMU_MPU_SPI_DEV_UPPER)"/>
<define name="IMU_MPU_SPI_SLAVE_IDX" value="$(IMU_MPU_SPI_SLAVE_IDX)"/>
<define name="USE_$(IMU_MPU_SPI_SLAVE_IDX)"/>
<file name="mpu60x0.c" dir="peripherals"/>
<file name="mpu60x0_spi.c" dir="peripherals"/>
<file name="imu_mpu6000.c"/>
<test>
<define name="SPI_MASTER"/>
<define name="IMU_MPU_SPI_DEV" value="spi1"/>
<define name="USE_SPI1"/>
<define name="IMU_MPU_SPI_SLAVE_IDX" value="0"/>
<define name="USE_SPI_SLAVE0"/>
<define name="PERIODIC_FREQUENCY" value="512"/>
<define name="IMU_MPU_SPI_PERIODIC_FREQ" value="512"/>
</test>
</makefile>
</module>