hal_vti_cma3000_D01_accelerometer.c File Reference

Hardware Abstraction Layer (HAL) support file for VTI Technologies CMA3000-D01 Accelerometer. More...

#include "../HAL/hal.h"

Functions
unsigned char	readAccelerometerRegister (unsigned char reg)
unsigned char	writeAccelerometerRegister (unsigned char reg, unsigned char data)
char *	getAccelerometerInterruptReason (unsigned char interruptReason)

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Detailed Description

Hardware Abstraction Layer (HAL) support file for VTI Technologies CMA3000-D01 Accelerometer.

Note:

ACCELEROMETER_RX_BUF and ACCELEROMETER_SS_SET and ACCELEROMETER_SS_CLEAR, and spiWriteAccelerometer() must be defined

See also:

VTI Technologies document: CMA3000-D01 datasheet

VTI Technologies document: Product Family Specification, CMA3000-D0X Series 3-axis accelerometer

VTI Technologies document: Interfacing CMA3000-D01 to an MSP430 ultra low-power microcontroller

Rev

545

Author

dsmith

Date

2010-05-27 17:09:05 -0700 (Thu, 27 May 2010)

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Function Documentation

char* getAccelerometerInterruptReason

(

unsigned char

interruptReason

)

Returns the name of the Accelerometer Interrupt Status Register that caused the interrupt.

Parameters:

interruptReason

the value read from the ACCEL_INT_STATUS register.

Returns:

the name of the reason for the interrupt, e.g. "Motion on X" or "Motion on Y" or "Free Fall" etc.

unsigned char readAccelerometerRegister

(

unsigned char

reg

)

Read a byte from the accelerometer over SPI

Precondition:

SPI port configured for the accelerometer correctly

Parameters:

reg

which register to read from

Returns:

the value read from the register

unsigned char writeAccelerometerRegister	(	unsigned char	reg,
		unsigned char	data
	)

Write a byte to the acceleration sensor over SPI

Precondition:

SPI port configured correctly

Parameters:

reg

which register to read from

Returns:

the value returned by the write operation