stm32l4r9i_eval_sram.c File Reference

This file provides a set of functions needed to drive the IS61WV102416BLL-10MLI SRAM memory mounted on STM32L4R9I-EVAL board. More...

#include "stm32l4r9i_eval_sram.h"

Go to the source code of this file.

Defines
#define	SRAM_ADDR_SETUP_TIME   2 /* 10ns with a clock at 120 MHz (period of 8.33 ns) */
#define	SRAM_DATA_SETUP_TIME   1 /* 6ns with a clock at 120 MHz (period of 8.33 ns) */
#define	SRAM_DATA_HOLD_TIME   0
#define	SRAM_TURN_AROUND_TIME   1 /* 4ns with a clock at 120 MHz (period of 8.33 ns) */
Functions
static void	SRAM_MspInit (void)
	Initializes SRAM MSP.
uint8_t	BSP_SRAM_Init (void)
	Initializes the SRAM device.
uint8_t	BSP_SRAM_ReadData (uint32_t uwStartAddress, uint16_t *pData, uint32_t uwDataSize)
	Reads an amount of data from the SRAM device in polling mode.
uint8_t	BSP_SRAM_ReadData_DMA (uint32_t uwStartAddress, uint16_t *pData, uint32_t uwDataSize)
	Reads an amount of data from the SRAM device in DMA mode.
uint8_t	BSP_SRAM_WriteData (uint32_t uwStartAddress, uint16_t *pData, uint32_t uwDataSize)
	Writes an amount of data from the SRAM device in polling mode.
uint8_t	BSP_SRAM_WriteData_DMA (uint32_t uwStartAddress, uint16_t *pData, uint32_t uwDataSize)
	Writes an amount of data from the SRAM device in DMA mode.
void	BSP_SRAM_DMA_IRQHandler (void)
	Handles SRAM DMA transfer interrupt request.
Variables
static SRAM_HandleTypeDef	sramHandle
static FMC_NORSRAM_TimingTypeDef	Timing

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Detailed Description

This file provides a set of functions needed to drive the IS61WV102416BLL-10MLI SRAM memory mounted on STM32L4R9I-EVAL board.

Author:

MCD Application Team

  ==============================================================================
                     ##### How to use this driver #####
  ==============================================================================
  [..]
   (#) This driver is used to drive the IS61WV102416BLL-10MLI SRAM external memory mounted
       on STM32L4R9I-EVAL evaluation board.

   (#) This driver does not need a specific component driver for the SRAM device
       to be included with.

   (#) Initialization steps:
       (++) Initialize the SRAM external memory using the BSP_SRAM_Init() function. This
            function includes the MSP layer hardware resources initialization and the
            FMC controller configuration to interface with the external SRAM memory.

   (#) SRAM read/write operations
       (++) SRAM 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_SRAM_ReadData()/BSP_SRAM_WriteData(), or by DMA transfer using the functions
            BSP_SRAM_ReadData_DMA()/BSP_SRAM_WriteData_DMA().
       (++) The AHB access is performed with 16-bit width transaction, the DMA transfer
            configuration is fixed at single (no burst) halfword transfer
            (see the SRAM_MspInit() static function).
       (++) User can implement his own functions for read/write access with his desired
            configurations.
       (++) If interrupt mode is used for DMA transfer, the function BSP_SRAM_DMA_IRQHandler()
            is called in IRQ handler file, to serve the generated interrupt once the DMA
            transfer is complete.
  

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Definition in file stm32l4r9i_eval_sram.c.