mxm_cfg.c File Reference

Configuration for the MAX monitoring chip. More...

#include "mxm_cfg.h"
#include "io.h"
#include "spi.h"

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Functions
void	MXM_MonitoringPinInit (void)
	Initialize the pins connected to the MAX17841B. More...
STD_RETURN_TYPE_e	MXM_GetSPIStateReady (void)
	Return whether SPI interface is ready. More...
STD_RETURN_TYPE_e	MXM_SendData (uint16_t *txBuffer, uint16_t length)
	Transmit data over SPI. More...
STD_RETURN_TYPE_e	MXM_ReceiveData (uint16_t *txBuffer, uint16_t *rxBuffer, uint16_t length)
	Send and Receive data over SPI. More...

Detailed Description

Configuration for the MAX monitoring chip.

Copyright

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SPDX-License-Identifier: BSD-3-Clause

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Author

foxBMS Team

Date

2019-01-09 (date of creation)

Updated

2021-07-14 (date of last update)

Prefix

MXM

Definition in file mxm_cfg.c.

Function Documentation

MXM_GetSPIStateReady()

STD_RETURN_TYPE_e MXM_GetSPIStateReady

(

void

)

Return whether SPI interface is ready.

In the case of an DMA-based implementation this function can be used to check the state of the SPI interface and whether it can be accessed for writing.

Returns

STD_OK if the SPI interface is free

Definition at line 81 of file mxm_cfg.c.

MXM_MonitoringPinInit()

void MXM_MonitoringPinInit

(

void

)

Initialize the pins connected to the MAX17841B.

Initializes the pins that are needed by MAX17841B to a known state. The pins are:

• the interrupt pin
• the shutdown pin
• the chip select pin

Only the necessary pins are configured.

Definition at line 72 of file mxm_cfg.c.

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MXM_ReceiveData()

STD_RETURN_TYPE_e MXM_ReceiveData	(	uint16_t *	txBuffer,
		uint16_t *	rxBuffer,
		uint16_t	length
	)

Send and Receive data over SPI.

Wraps the SPI_TransmitReceiveData API function in order to have one single point of access for the driver to the SPI interface.

Parameters

[in]	txBuffer	pointer to an array that is to be transmitted
[out]	rxBuffer	pointer to an array into which received data shall be written
[in]	length	length of both arrays

Returns

STD_NOT_OK for unsuccessful transmissions, STD_OK on success

Definition at line 92 of file mxm_cfg.c.

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MXM_SendData()

STD_RETURN_TYPE_e MXM_SendData	(	uint16_t *	txBuffer,
		uint16_t	length
	)

Transmit data over SPI.

Wraps the SPI_TransmitData API function in order to have one single point of access for the driver to the SPI interface.

Parameters

[in]	txBuffer	pointer to an array that is to be transmitted
[in]	length	length of array

Returns

STD_NOT_OK for unsuccessful transmissions, STD_OK on success

Definition at line 86 of file mxm_cfg.c.

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