MMA51xx.h File Reference

Establishes a relationship between the SBC and the peculiarities of PSI5 sensors. More...

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Defines
#define	TRUE   (1u)
#define	CLEAR   (0u)
#define	BITS_IN_NIBBLE   (4u)
#define	BITS_IN_BYTE   (8u)
#define	BYTES_IN_16   (2u)
#define	BYTES_IN_32   (4u)
#define	BIT_DEFINITION
#define	BIT0   (1u << 0u)
#define	BIT1   (1u << 1u)
#define	BIT2   (1u << 2u)
#define	BIT3   (1u << 3u)
#define	BIT4   (1u << 4u)
#define	BIT5   (1u << 5u)
#define	BIT6   (1u << 6u)
#define	BIT7   (1u << 7u)
#define	BIT8   (1u << 8u)
#define	BIT9   (1u << 9u)
#define	BIT10   (1u << 10)
#define	BIT11   (1u << 11)
#define	BIT12   (1u << 12)
#define	BIT13   (1u << 13)
#define	BIT14   (1u << 14)
#define	BIT15   (1u << 15)
#define	BIT16   (1u << 16)
#define	BIT17   (1u << 17)
#define	BIT18   (1u << 18)
#define	BIT19   (1u << 19)
#define	BIT20   (1u << 20)
#define	BIT21   (1u << 21)
#define	BIT22   (1u << 22)
#define	BIT23   (1u << 23)
#define	BIT24   (1u << 24)
#define	BIT25   (1u << 25)
#define	BIT26   (1u << 26)
#define	BIT27   (1u << 27)
#define	BIT28   (1u << 28)
#define	BIT29   (1u << 29)
#define	BIT30   (1u << 30)
#define	BIT31   (1u << 31)
#define	N_ELEMENTS(X)   (sizeof(X)/sizeof(*(X)))
#define	MMA5100_SENSOR_READY_STATUS   BIT15
#define	MMA5100_SENSOR_READY_UNLOCKED_STATUS   (MMA5100_SENSOR_READY_STATUS | BIT14)
#define	MMA5100_SENSOR_DEFECT_STATUS   BIT13
#define	MMA5100_SENSOR_BUSY_STATUS   BIT12
#define	MMA5100_COMMAND_NOT_RECOGNIZED   BIT11
#define	MMA5100_SENSOR_DEFECT   ((uint16_t)0x1F4)
#define	MMA5100_SENSOR_BUSY   ((uint16_t)0x1e8)
#define	MMA5100_SENSOR_READY   ((uint16_t)0x1e7)
#define	MMA5100_SENSOR_READY_UNLOCKED   ((uint16_t)0x1e6)
#define	MMA5100_DATA_INDICATOR   ((uint16_t)0x10u)
#define	MMA5100_CONTENTS_MASK   ((uint16_t)0x0Fu)
#define	MMA5100_N_REGISTERS   ((uint8_t)19u)
#define	MMA5100_UL_FOR_DATA   ((uint16_t)0x220u)
#define	MMA5100_LL_FOR_DATA   ((uint16_t)0x1FFu)
#define	MMA5100_UL_FOR_STATUS   ((uint16_t)0x200u)
#define	MMA5100_LL_FOR_STATUS   ((uint16_t)0x1E0u)
Enumerations
enum	MMA5100_REGISTER_INDEX {   PROTOCOL = 0, N_DATA_BLOCKS, MANUFACTURER, SENSOR_TYPE,   AXIS, RANGE, DEVCFG2, PRODUCT_REVISION,   DEVCFG6, PROD_DATE_1, PROD_DATE_2, SN0,   SN1, SN2, SN3, INIT_RAW_OFFSET,   COMBINED_OFFSET_SELF_TEST, AVG_SELF_TEST, DEVCFG1 }
enum	MMA5100_RAW_DATA_INDEX {   MMA5100_D1 = 0, MMA5100_D2, MMA5100_D3, MMA5100_D4,   MMA5100_D5, MMA5100_D6, MMA5100_D7, MMA5100_D8,   MMA5100_D9, MMA5100_D10, MMA5100_D11, MMA5100_D12,   MMA5100_D13, MMA5100_D14, MMA5100_D15, MMA5100_D16,   MMA5100_D17, MMA5100_D18, MMA5100_D19, MMA5100_D20,   MMA5100_D21, MMA5100_D22, MMA5100_D23, MMA5100_D24,   MMA5100_D25, MMA5100_D26, MMA5100_D27, MMA5100_D28,   MMA5100_D29, MMA5100_D30, MMA5100_D31, MMA5100_D32 }
Functions
uint16_t	u16fnMMA5100TreatData (uint16_t *pu16SatData, uint8_t *pu8ResultArray, uint8_t *pu8CurrentIndex, uint8_t *pu8IndexAdder, uint32_t *pu32AlreadyWritten)
	As PSI5 satellite data comes in, this function treates the currently received word and gets ready to treat it. It shall be called several times in order to take care of all downloaded data.

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Detailed Description

Establishes a relationship between the SBC and the peculiarities of PSI5 sensors.

Copyright (C) 2011 Freescale Semiconductor Freescale Confidential Proprietary

Author:

Freescale Semiconductor

SASD Automotive

r11515

Version:

Date:

Warning:

(If needed)

History:

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Function Documentation

uint16_t u16fnMMA5100TreatData	(	uint16_t *	pu16SatData,
		uint8_t *	pu8ResultArray,
		uint8_t *	pu8CurrentIndex,
		uint8_t *	pu8IndexAdder,
		uint32_t *	pu32AlreadyWritten
	)

As PSI5 satellite data comes in, this function treates the currently received word and gets ready to treat it. It shall be called several times in order to take care of all downloaded data.

Parameters:

pu16SatData,:	Pointer to the current word that has been received.
pu8ResultArray,:	Pointer to a memory location that shall contain an array where to store all registers; a virtual memory map, if you will.
pu8CurrentIndex,:	Pointer to a memory location that keeps track of the current index for the next piece of data.
pu8IndexAdder,:	Pointer to a memory location that shall remember if we have already downloaded the first half of the register table, and if we have, writes to it to generate an index offset used in the pu8ResultArray.
pu32AlreadyWritten,:	Pointer to a mask that keeps track if an existing register has already been written or not.

Returns:

Status based on whether the received data has been: Ok (CLEAR); MMA5100_COMMAND_NOT_RECOGNIZED; MMA5100_SENSOR_READY_UNLOCKED_STATUS; MMA5100_SENSOR_READY_STATUS; MMA5100_SENSOR_BUSY_STATUS; MMA5100_SENSOR_DEFECT_STATUS