flash_internal_spi.c File Reference

#include "main.h"
#include "littlefs/flash_internal_spi.h"

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Functions
static void	_chip_select_low (uint8_t chip_number)
static void	_chip_select_high ()
	Deactivates the chip select for all lines.
static HAL_StatusTypeDef	_SPI_fast_receive (SPI_HandleTypeDef *hspi, uint8_t *response, uint16_t response_size)
	Use DMA to speed up receiving. At least 3x faster than HAL_SPI_Receive when transferring 2048 bytes.
FLASH_error_enum_t	FLASH_SPI_send_command (const FLASH_SPI_Data_t cmd[], uint8_t chip_number)
FLASH_error_enum_t	FLASH_SPI_send_command_with_data (const FLASH_SPI_Data_t cmd[], FLASH_SPI_Data_t *data, uint8_t chip_number)
FLASH_error_enum_t	FLASH_SPI_send_command_receive_response (const FLASH_SPI_Data_t cmd[], uint8_t *response, uint16_t response_size, uint8_t chip_number)
void	FLASH_SPI_enable_then_disable_chip_select (uint8_t chip_number)
void	HAL_SPI_RxCpltCallback (SPI_HandleTypeDef *hspi)

Variables
SPI_HandleTypeDef *	hspi_flash_ptr = &hspi1
const uint16_t	FLASH_SPI_TIMEOUT_MS = 25
volatile uint8_t	SPI_DMA_receive_complete = 0

Function Documentation

_chip_select_high()

static void _chip_select_high ( )

inlinestatic

Deactivates the chip select for all lines.

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_chip_select_low()

static void _chip_select_low ( uint8_t chip_number )

inlinestatic

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_SPI_fast_receive()

static HAL_StatusTypeDef _SPI_fast_receive ( SPI_HandleTypeDef * hspi, uint8_t * response, uint16_t response_size )

static

Use DMA to speed up receiving. At least 3x faster than HAL_SPI_Receive when transferring 2048 bytes.

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FLASH_SPI_enable_then_disable_chip_select()

void FLASH_SPI_enable_then_disable_chip_select

(

uint8_t

chip_number

)

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FLASH_SPI_send_command()

FLASH_error_enum_t FLASH_SPI_send_command	(	const FLASH_SPI_Data_t	cmd[],
		uint8_t	chip_number )

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FLASH_SPI_send_command_receive_response()

FLASH_error_enum_t FLASH_SPI_send_command_receive_response	(	const FLASH_SPI_Data_t	cmd[],
		uint8_t *	response,
		uint16_t	response_size,
		uint8_t	chip_number )

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FLASH_SPI_send_command_with_data()

FLASH_error_enum_t FLASH_SPI_send_command_with_data	(	const FLASH_SPI_Data_t	cmd[],
		FLASH_SPI_Data_t *	data,
		uint8_t	chip_number )

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HAL_SPI_RxCpltCallback()

void HAL_SPI_RxCpltCallback

(

SPI_HandleTypeDef *

hspi

)

Variable Documentation

FLASH_SPI_TIMEOUT_MS

const uint16_t FLASH_SPI_TIMEOUT_MS = 25

hspi_flash_ptr

SPI_HandleTypeDef* hspi_flash_ptr = &hspi1

SPI_DMA_receive_complete

volatile uint8_t SPI_DMA_receive_complete = 0