fsl_mma8451.h File Reference

#include "i2c_master/fsl_i2c_master_driver.h"

Go to the source code of this file.

Data Structures
struct	mma8451_device_t
	MMA8451 driver instance. More...
struct	acceleration_t
	3D acceleration values. More...

Enumerations
enum	_mma8451_constants {   kMMA8451_STATUS,   kMMA8451_OUT_X_MSB,   kMMA8451_OUT_X_LSB,   kMMA8451_OUT_Y_MSB,   kMMA8451_OUT_Y_LSB,   kMMA8451_OUT_Z_MSB,   kMMA8451_OUT_Z_LSB,   kMMA8451_F_SETUP,   kMMA8451_TRIG_CFG,   kMMA8451_SYSMOD,   kMMA8451_INT_SOURCE,   kMMA8451_WHO_AM_I,   kMMA8451_WHO_AM_I_Device_ID,   kMMA8451_XYZ_DATA_CFG,   kMMA8451_CTRL_REG1,   kMMA8451_CTRL_REG2,   kMMA8451_CTRL_REG3,   kMMA8451_CTRL_REG4,   kMMA8451_CTRL_REG5 }
	Register definitions for the MMA8451. More...

Functions
int32_t	mma8451_init (mma8451_device_t *device, uint8_t i2c_addr, uint32_t baud_kbps)
	Initialize the MMA8451 driver instance. More...
int32_t	mma8451_get_acceleration (const mma8451_device_t *device, acceleration_t *accel)
	Read the current acceleration values. More...
uint8_t	mma8451_read_register (const mma8451_device_t *device, uint8_t reg_addr)
	Read a single register of the MMA8451. More...
int32_t	mma8451_write_register (const mma8451_device_t *device, uint8_t reg_addr, uint8_t reg_val)
	Write a single register of the MMA8451. More...

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Data Structure Documentation

struct mma8451_device_t

Data Fields
i2c_device_t	address

struct acceleration_t

Data Fields
int32_t	x
int32_t	y
int32_t	z

Enumeration Type Documentation

enum _mma8451_constants

Enumerator
kMMA8451_STATUS
kMMA8451_OUT_X_MSB
kMMA8451_OUT_X_LSB
kMMA8451_OUT_Y_MSB
kMMA8451_OUT_Y_LSB
kMMA8451_OUT_Z_MSB
kMMA8451_OUT_Z_LSB
kMMA8451_F_SETUP
kMMA8451_TRIG_CFG
kMMA8451_SYSMOD
kMMA8451_INT_SOURCE
kMMA8451_WHO_AM_I
kMMA8451_WHO_AM_I_Device_ID
kMMA8451_XYZ_DATA_CFG
kMMA8451_CTRL_REG1
kMMA8451_CTRL_REG2
kMMA8451_CTRL_REG3
kMMA8451_CTRL_REG4
kMMA8451_CTRL_REG5

Function Documentation

int32_t mma8451_get_acceleration	(	const mma8451_device_t *	device,
		acceleration_t *	accel
	)

Parameters

device	Pointer to a valid device instance structure.
accel	Pointer to a structure that will be filled in with the current acceleration values for all three axes.

Returns

kStatus_Success or error code.

Return values

kStatus_Success

int32_t mma8451_init	(	mma8451_device_t *	device,
		uint8_t	i2c_addr,
		uint32_t	baud_kbps
	)

Parameters

device	Device driver state structure that will be filled in by this function. It is the responsibility of the caller to provide storage for this structure, and to free that storage when the driver is no longer needed.
isSaoSet
baud_kbps

Returns

kStatus_Success or error code.

Return values

kStatus_Success
kMMA8451_Invalid_I2C_Address_Error

uint8_t mma8451_read_register	(	const mma8451_device_t *	device,
		uint8_t	reg_addr
	)

Parameters

device	Pointer to a valid device instance structure.
reg_addr	Address of the internal MMA8451 register to read.

Returns

The register's value.

int32_t mma8451_write_register	(	const mma8451_device_t *	device,
		uint8_t	reg_addr,
		uint8_t	reg_val
	)

Parameters

device	Pointer to a valid device instance structure.
reg_addrAddress	of the internal MMA8451 register to change the value of.
reg_val	New value for the register.

Returns

kStatus_Success or error code.

Return values

kStatus_Success