Specialised driver API for IMU devices. More...

#include <zephyr/kernel.h>
#include <zephyr/device.h>

Data Structures
struct	imu_config
	IMU configuration struct. More...

struct	imu_config_output
	Configured IMU value. More...

struct	imu_sample

struct	imu_sensor_meta
	Metadata for each sub-sensor in a FIFO buffer. More...

struct	imu_sample_array
	FIFO read structure. More...

struct	infuse_imu_api

struct	imu_linear_downsample_scaled_state
	State for imu_linear_downsample_scaled. More...

Macros
#define	IMU_SAMPLE_ARRAY_TYPE_DEFINE(type_name, max_samples)
	Create type that holds a given number of IMU samples.

#define	IMU_SAMPLE_ARRAY_CREATE(name, max_samples)
	Create static buffer of IMU samples suitable for use with imu_data_read.

Functions
static int	imu_configure (const struct device dev, const struct imu_config config, struct imu_config_output *output)
	Configure IMU for operation.

static int	imu_data_wait (const struct device *dev, k_timeout_t timeout)
	Wait for FIFO interrupt from IMU.

static int	imu_data_read (const struct device dev, struct imu_sample_array samples, uint16_t max_samples)
	Read samples from IMU.

static int	imu_self_test (const struct device *dev)
	Run self-test functionality on the IMU.

static int16_t	imu_accelerometer_1g (uint8_t full_scale)
	Convert a full scale range to an expected value for 1G.

static uint32_t	imu_sample_period (const struct imu_sensor_meta *meta)
	Get the local ticks between samples in a buffer.

static uint16_t	imu_sample_rate (const struct imu_sensor_meta *meta)
	Get the approximate sample rate of a buffer.

static k_ticks_t	imu_sample_timestamp (const struct imu_sensor_meta *meta, uint8_t sample)
	Get the local tick counter of a given sample in a buffer.

int	imu_linear_downsample_scaled (struct imu_linear_downsample_scaled_state state, const struct imu_sample input, uint16_t num_input)
	Downsample IMU samples to a new frequency using linear interpolation.

Detailed Description

Specialised driver API for IMU devices.

SPDX-License-Identifier: FSL-1.1-ALv2

Driver API optimised for high datarate, FIFO buffered IMU sensors.

Data Structures