spi.c File Reference

PER Serial Peripheral Interface Device driver for STM32F4 and STM32F7. More...

#include "common/phal_F4_F7/spi/spi.h"

Functions
bool	PHAL_SPI_init (SPI_InitConfig_t *cfg)
	Initilize SPI peripheral with the configuired structure.
bool	PHAL_SPI_transfer_noDMA (SPI_InitConfig_t *spi, const uint8_t *out_data, uint32_t txlen, uint32_t rxlen, uint8_t *in_data)
	SPI handle.
bool	PHAL_SPI_transfer (SPI_InitConfig_t *spi, const uint8_t *out_data, const uint32_t data_len, const uint8_t *in_data)
	Transfer data_len bytes from out_data to SPI device and place MISO data in in_data This function just starts the DMA transfer,.
bool	PHAL_SPI_busy (SPI_InitConfig_t *cfg)
	Check for current SPI transaction to complete.
void	PHAL_SPI_ForceReset (SPI_InitConfig_t *spi)
void	DMA2_Stream3_IRQHandler ()
uint8_t	PHAL_SPI_readByte (SPI_InitConfig_t *spi, uint8_t address, bool skipDummy)
	Blocking function to read a single byte from a SPI device. Useful for Initilization functions that just need to read a single byte in a blocking function.
uint8_t	PHAL_SPI_writeByte (SPI_InitConfig_t *spi, uint8_t address, uint8_t writeDat)
	Blocking function to write a single byte to a SPI device. Useful for Initilization functions that just need to write a single byte in a blocking function.

Variables
uint32_t	APB2ClockRateHz
uint32_t	APB1ClockRateHz

Detailed Description

PER Serial Peripheral Interface Device driver for STM32F4 and STM32F7.

Author

Aditya Anand (anand.nosp@m.89@p.nosp@m.urdue.nosp@m..edu) - Port of L4 HAL by Adam Busch (busch.nosp@m.8@pu.nosp@m.rdue..nosp@m.edu)

Version

0.1

Date

2023-12-4

Copyright

Copyright (c) 2021

Function Documentation

PHAL_SPI_busy()

bool PHAL_SPI_busy

(

SPI_InitConfig_t *

cfg

)

Check for current SPI transaction to complete.

Parameters

cfg	Spi config

Returns

true

false

PHAL_SPI_init()

bool PHAL_SPI_init

(

SPI_InitConfig_t *

handle

)

Initilize SPI peripheral with the configuired structure.

Parameters

handle

SPI handle to configure.

Returns

true

false

PHAL_SPI_readByte()

uint8_t PHAL_SPI_readByte	(	SPI_InitConfig_t *	spi,
		uint8_t	address,
		bool	skipDummy )

Blocking function to read a single byte from a SPI device. Useful for Initilization functions that just need to read a single byte in a blocking function.

Parameters

spi	Spi handle
address	Address of data to read
skipDummy	Return the 3rd byte read instead of the 2nd byte

PHAL_SPI_transfer()

bool PHAL_SPI_transfer	(	SPI_InitConfig_t *	spi,
		const uint8_t *	out_data,
		const uint32_t	data_len,
		const uint8_t *	in_data )

Transfer data_len bytes from out_data to SPI device and place MISO data in in_data This function just starts the DMA transfer,.

Parameters

spi	SPI handle
out_data	Address of data buffer to put on MOSI line
data_len	Number of SPI packets to send
in_data	Address of data buffer to put data coming in MISO line

Returns

true Able to start DMA transaction

false Unable to start DMA transaction

PHAL_SPI_transfer_noDMA()

bool PHAL_SPI_transfer_noDMA	(	SPI_InitConfig_t *	spi,
		const uint8_t *	out_data,
		uint32_t	txlen,
		uint32_t	rxlen,
		uint8_t *	in_data )

SPI handle.

Parameters

spi	SPI handle
out_data	Address of data buffer to put on MOSI line
txlen	Number of SPI Packets to Send
rxlen	Number of SPI Packets to Receive
in_data	Address of data buffer to put data coming in MISO line

Returns

true Successfully completed non-DMA SPI transaction

false Unable to complete non-DMA SPI transaction

PHAL_SPI_writeByte()

uint8_t PHAL_SPI_writeByte	(	SPI_InitConfig_t *	spi,
		uint8_t	address,
		uint8_t	writeDat )

Blocking function to write a single byte to a SPI device. Useful for Initilization functions that just need to write a single byte in a blocking function.

Parameters

spi	Spi handle
address	Address of data to read
writeDat	Data to write to address