spi.c File Reference

G4 SPI. More...

#include "common/phal_G4/spi/spi.h"
#include "common/utils/clamp.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, uint8_t *in_data)
bool	PHAL_SPI_busy (SPI_InitConfig_t *cfg)
	Check for current SPI transaction to complete.
void	PHAL_SPI_ForceReset (SPI_InitConfig_t *spi)
	__attribute__ ((weak))
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

G4 SPI.

Author

Ronak Jain

Version

0.1

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_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