foxBMS  1.2.0
The foxBMS Battery Management System API Documentation
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.

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]txBufferpointer to an array that is to be transmitted
[out]rxBufferpointer to an array into which received data shall be written
[in]lengthlength 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]txBufferpointer to an array that is to be transmitted
[in]lengthlength 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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