STM32F429I DISCOVERY SDRAM Private Functions

Functions
uint8_t	BSP_SDRAM_Init (void)
	Initializes the SDRAM device.
void	BSP_SDRAM_Initialization_sequence (uint32_t RefreshCount)
	Programs the SDRAM device.
uint8_t	BSP_SDRAM_ReadData (uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
	Reads an mount of data from the SDRAM memory in polling mode.
uint8_t	BSP_SDRAM_ReadData_DMA (uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
	Reads an mount of data from the SDRAM memory in DMA mode.
uint8_t	BSP_SDRAM_WriteData (uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
	Writes an mount of data to the SDRAM memory in polling mode.
uint8_t	BSP_SDRAM_WriteData_DMA (uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
	Writes an mount of data to the SDRAM memory in DMA mode.
uint8_t	BSP_SDRAM_Sendcmd (FMC_SDRAM_CommandTypeDef *SdramCmd)
	Sends command to the SDRAM bank.
void	BSP_SDRAM_DMA_IRQHandler (void)
	Handles SDRAM DMA transfer interrupt request.
__weak void	BSP_SDRAM_MspInit (SDRAM_HandleTypeDef *hsdram, void *Params)
	Initializes SDRAM MSP.
__weak void	BSP_SDRAM_MspDeInit (SDRAM_HandleTypeDef *hsdram, void *Params)
	DeInitializes SDRAM MSP.

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Function Documentation

void BSP_SDRAM_DMA_IRQHandler

(

void

)

Handles SDRAM DMA transfer interrupt request.

Definition at line 311 of file stm32f429i_discovery_sdram.c.

References SdramHandle.

uint8_t BSP_SDRAM_Init

(

void

)

Initializes the SDRAM device.

Definition at line 99 of file stm32f429i_discovery_sdram.c.

References BSP_SDRAM_Initialization_sequence(), BSP_SDRAM_MspInit(), REFRESH_COUNT, SDCLOCK_PERIOD, SDRAM_CAS_LATENCY, SDRAM_ERROR, SDRAM_MEMORY_WIDTH, SDRAM_OK, SDRAM_READBURST, SdramHandle, and Timing.

Referenced by BSP_LCD_Init().

void BSP_SDRAM_Initialization_sequence

(

uint32_t

RefreshCount

)

Programs the SDRAM device.

Parameters:

RefreshCount,:

SDRAM refresh counter value

Definition at line 160 of file stm32f429i_discovery_sdram.c.

References Command, SDRAM_MODEREG_BURST_LENGTH_1, SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL, SDRAM_MODEREG_CAS_LATENCY_3, SDRAM_MODEREG_OPERATING_MODE_STANDARD, SDRAM_MODEREG_WRITEBURST_MODE_SINGLE, SDRAM_TIMEOUT, and SdramHandle.

Referenced by BSP_SDRAM_Init().

__weak void BSP_SDRAM_MspDeInit	(	SDRAM_HandleTypeDef *	hsdram,
		void *	Params
	)

DeInitializes SDRAM MSP.

Note:

This function can be surcharged by application code.

Parameters:

hsdram,:	pointer on SDRAM handle
Params,:	pointer on additional configuration parameters, can be NULL.

Definition at line 443 of file stm32f429i_discovery_sdram.c.

References SDRAM_DMAx_IRQn, and SDRAM_DMAx_STREAM.

__weak void BSP_SDRAM_MspInit	(	SDRAM_HandleTypeDef *	hsdram,
		void *	Params
	)

Initializes SDRAM MSP.

Note:

This function can be surcharged by application code.

Parameters:

hsdram,:	pointer on SDRAM handle
Params,:	pointer on additional configuration parameters, can be NULL.

Definition at line 322 of file stm32f429i_discovery_sdram.c.

References __DMAx_CLK_ENABLE, SDRAM_DMAx_CHANNEL, SDRAM_DMAx_IRQn, and SDRAM_DMAx_STREAM.

Referenced by BSP_SDRAM_Init().

uint8_t BSP_SDRAM_ReadData	(	uint32_t	uwStartAddress,
		uint32_t *	pData,
		uint32_t	uwDataSize
	)

Reads an mount of data from the SDRAM memory in polling mode.

Parameters:

uwStartAddress	: Read start address
pData	: Pointer to data to be read
uwDataSize,:	Size of read data from the memory

Definition at line 221 of file stm32f429i_discovery_sdram.c.

References SDRAM_ERROR, SDRAM_OK, and SdramHandle.

uint8_t BSP_SDRAM_ReadData_DMA	(	uint32_t	uwStartAddress,
		uint32_t *	pData,
		uint32_t	uwDataSize
	)

Reads an mount of data from the SDRAM memory in DMA mode.

Parameters:

uwStartAddress	: Read start address
pData	: Pointer to data to be read
uwDataSize,:	Size of read data from the memory

Definition at line 239 of file stm32f429i_discovery_sdram.c.

References SDRAM_ERROR, SDRAM_OK, and SdramHandle.

uint8_t BSP_SDRAM_Sendcmd

(

FMC_SDRAM_CommandTypeDef *

SdramCmd

)

Sends command to the SDRAM bank.

Parameters:

SdramCmd,:

Pointer to SDRAM command structure

Return values:

HAL

status

Definition at line 296 of file stm32f429i_discovery_sdram.c.

References SDRAM_ERROR, SDRAM_OK, SDRAM_TIMEOUT, and SdramHandle.

uint8_t BSP_SDRAM_WriteData	(	uint32_t	uwStartAddress,
		uint32_t *	pData,
		uint32_t	uwDataSize
	)

Writes an mount of data to the SDRAM memory in polling mode.

Parameters:

uwStartAddress	: Write start address
pData	: Pointer to data to be written
uwDataSize,:	Size of written data from the memory

Definition at line 257 of file stm32f429i_discovery_sdram.c.

References SDRAM_ERROR, SDRAM_OK, and SdramHandle.

uint8_t BSP_SDRAM_WriteData_DMA	(	uint32_t	uwStartAddress,
		uint32_t *	pData,
		uint32_t	uwDataSize
	)

Writes an mount of data to the SDRAM memory in DMA mode.

Parameters:

uwStartAddress	: Write start address
pData	: Pointer to data to be written
uwDataSize,:	Size of written data from the memory

Definition at line 279 of file stm32f429i_discovery_sdram.c.

References SDRAM_ERROR, SDRAM_OK, and SdramHandle.