PX4-Autopilot/msg/sensor_imu_fifo.msg

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uint64 timestamp # time since system start (microseconds)
uint64 timestamp_sample
uint32 device_id # unique device ID for the sensor that does not change between power cycles
float32 dt # delta time between samples (microseconds)
uint8 samples # number of valid samples
float32 accel_scale
float32 gyro_scale
uint8 FIFO_SIZE = 24
int16[24] accel_x # gyro in the FRD board frame X-axis
int16[24] accel_y # gyro in the FRD board frame Y-axis
int16[24] accel_z # gyro in the FRD board frame Z-axis
int16[24] gyro_x # gyro in the FRD board frame X-axis
int16[24] gyro_y # gyro in the FRD board frame Y-axis
int16[24] gyro_z # gyro in the FRD board frame Z-axis
float32 temperature # temperature in degrees Celsius
uint32 error_count
uint8 ORB_QUEUE_LENGTH = 8