nxp_mc33775a.h File Reference

Headers for the driver for the MC33775A analog front-end. More...

#include "nxp_mc33775a_cfg.h"
#include <stdint.h>

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Functions
STD_RETURN_TYPE_e	N775_I2cRead (uint8_t module, uint8_t deviceAddress, uint8_t *pData, uint8_t dataLength)
	trigger a read on the I2C bus of the slave. More...
STD_RETURN_TYPE_e	N775_I2cWrite (uint8_t module, uint8_t deviceAddress, uint8_t *pData, uint8_t dataLength)
	trigger a write on the I2C bus of the slave. More...
STD_RETURN_TYPE_e	N775_I2cWriteRead (uint8_t module, uint8_t deviceAddress, uint8_t *pDataWrite, uint8_t writeDataLength, uint8_t *pDataRead, uint8_t readDataLength)
	trigger a read on the I2C bus of the slave, first write address of register to read. More...
bool	N775_IsFirstMeasurementCycleFinished (N775_STATE_s *pState)
	gets the measurement initialization status. More...
void	N775_Measure (N775_STATE_s *pState)
	trigger function for the N775 driver state machine. More...

Variables
N775_STATE_s	n775_stateBase

Detailed Description

Headers for the driver for the MC33775A analog front-end.

Copyright

© 2010 - 2023, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. All rights reserved.

SPDX-License-Identifier: BSD-3-Clause

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Author

foxBMS Team

Date

2020-05-08 (date of creation)

Updated

2023-10-12 (date of last update)

Version

v1.6.0

Prefix

N775

Defines the interface to perform measurements with the MC33775A: It further defines functions to write to and read from the I2C bus that is implement of the AFE.

Definition in file nxp_mc33775a.h.

Function Documentation

N775_I2cRead()

STD_RETURN_TYPE_e N775_I2cRead	(	uint8_t	module,
		uint8_t	deviceAddress,
		uint8_t *	pData,
		uint8_t	dataLength
	)

trigger a read on the I2C bus of the slave.

Parameters

module	module number to address in the daisy-chain
deviceAddress	address of the I2C device addressed
pData	data read on I2C bus
dataLength	number of bytes to read

Definition at line 1096 of file nxp_mc33775a.c.

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N775_I2cWrite()

STD_RETURN_TYPE_e N775_I2cWrite	(	uint8_t	module,
		uint8_t	deviceAddress,
		uint8_t *	pData,
		uint8_t	dataLength
	)

trigger a write on the I2C bus of the slave.

Parameters

module	module number to address in the daisy-chain
deviceAddress	address of the I2C device addressed
pData	data to write on I2C bus
dataLength	number of bytes to write

Definition at line 1125 of file nxp_mc33775a.c.

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N775_I2cWriteRead()

STD_RETURN_TYPE_e N775_I2cWriteRead	(	uint8_t	module,
		uint8_t	deviceAddress,
		uint8_t *	pDataWrite,
		uint8_t	writeDataLength,
		uint8_t *	pDataRead,
		uint8_t	readDataLength
	)

trigger a read on the I2C bus of the slave, first write address of register to read.

Parameters

module	module number to address in the daisy-chain
deviceAddress	address of the I2C device addressed
pDataWrite	data written on I2C bus
writeDataLength	number of bytes to write
pDataRead	data read on I2C bus
readDataLength	number of bytes to read

Definition at line 1154 of file nxp_mc33775a.c.

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N775_IsFirstMeasurementCycleFinished()

bool N775_IsFirstMeasurementCycleFinished

(

N775_STATE_s *

pState

)

gets the measurement initialization status.

Parameters

pState

state of the N775A driver

Returns

true if a first measurement cycle was made, false otherwise

Definition at line 1196 of file nxp_mc33775a.c.

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N775_Measure()

void N775_Measure

(

N775_STATE_s *

pState

)

trigger function for the N775 driver state machine.

This function contains the sequence of events in the N775 state machine. It must be called time-triggered, every 1ms.

Parameters

pState

state of the N775A driver

Definition at line 1207 of file nxp_mc33775a.c.

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Variable Documentation

n775_stateBase

N775_STATE_s n775_stateBase

extern

state of the state machine for the MC33775A driver

Definition at line 100 of file nxp_mc33775a.c.