STM32F723E-Discovery BSP User Manual: stm32f723e_discovery_psram.c File Reference

STM32F723E-Discovery BSP

stm32f723e_discovery_psram.c File Reference

This file includes the PSRAM driver for the IS61WV51216BLL-10MLI memory device mounted on STM32F723E-DISCOVERY boards. More...

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Functions

uint8_t BSP_PSRAM_Init (void)
 Initializes the PSRAM device.
uint8_t BSP_PSRAM_DeInit (void)
 DeInitializes the PSRAM device.
uint8_t BSP_PSRAM_ReadData (uint32_t uwStartAddress, uint16_t *pData, uint32_t uwDataSize)
 Reads an amount of data from the PSRAM device in polling mode.
uint8_t BSP_PSRAM_ReadData_DMA (uint32_t uwStartAddress, uint16_t *pData, uint32_t uwDataSize)
 Reads an amount of data from the PSRAM device in DMA mode.
uint8_t BSP_PSRAM_WriteData (uint32_t uwStartAddress, uint16_t *pData, uint32_t uwDataSize)
 Writes an amount of data from the PSRAM device in polling mode.
uint8_t BSP_PSRAM_WriteData_DMA (uint32_t uwStartAddress, uint16_t *pData, uint32_t uwDataSize)
 Writes an amount of data from the PSRAM device in DMA mode.
__weak void BSP_PSRAM_MspInit (SRAM_HandleTypeDef *hsram, void *Params)
 Initializes PSRAM MSP.
__weak void BSP_PSRAM_MspDeInit (SRAM_HandleTypeDef *hsram, void *Params)
 DeInitializes SRAM MSP.

Variables

SRAM_HandleTypeDef psramHandle

Detailed Description

This file includes the PSRAM driver for the IS61WV51216BLL-10MLI memory device mounted on STM32F723E-DISCOVERY boards.

Author:
MCD Application Team
  How To use this driver:
  -----------------------
   - This driver is used to drive the IS61WV51216BLL-10M PSRAM external memory mounted
     on STM32F723E discovery board.
   - This driver does not need a specific component driver for the PSRAM device
     to be included with.

  Driver description:
  ------------------
  + Initialization steps:
     o Initialize the PSRAM external memory using the BSP_PSRAM_Init() function. This 
       function includes the MSP layer hardware resources initialization and the
       FMC controller configuration to interface with the external PSRAM memory.
  
  + PSRAM read/write operations
     o PSRAM external memory can be accessed with read/write operations once it is
       initialized.
       Read/write operation can be performed with AHB access using the functions
       BSP_PSRAM_ReadData()/BSP_PSRAM_WriteData(), or by DMA transfer using the functions
       BSP_PSRAM_ReadData_DMA()/BSP_PSRAM_WriteData_DMA().
     o The AHB access is performed with 16-bit width transaction, the DMA transfer
       configuration is fixed at single (no burst) halfword transfer 
       (see the PSRAM_MspInit() static function).
     o User can implement his own functions for read/write access with his desired 
       configurations.
     o If interrupt mode is used for DMA transfer, the function BSP_PSRAM_DMA_IRQHandler()
       is called in IRQ handler file, to serve the generated interrupt once the DMA 
       transfer is complete.
  
Attention:

© COPYRIGHT(c) 2016 STMicroelectronics

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Definition in file stm32f723e_discovery_psram.c.

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