File content as of revision 3:bc403474b366:

/**
  ******************************************************************************
  * @file    stm32h747i_discovery_sdram.h
  * @author  MCD Application Team
  * @brief   This file contains the common defines and functions prototypes for
  *          the stm32h747i_discovery_sdram.c driver.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */ 

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32H747I_DISCOVERY_SDRAM_H
#define __STM32H747I_DISCOVERY_SDRAM_H

#ifdef __cplusplus
 extern "C" {
#endif 

/* Includes ------------------------------------------------------------------*/
#include "stm32h7xx_hal.h"

/** @addtogroup BSP
  * @{
  */ 

/** @addtogroup STM32H747I_DISCOVERY
  * @{
  */
    
/** @addtogroup STM32H747I_DISCOVERY_SDRAM
  * @{
  */    

/** @defgroup STM32H747I_DISCOVERY_SDRAM_Exported_Constants Exported Constants
  * @{
  */
/** 
  * @brief  SDRAM status structure definition  
  */     
#define   SDRAM_OK         ((uint8_t)0x00)
#define   SDRAM_ERROR      ((uint8_t)0x01)

#define SDRAM_DEVICE_ADDR  ((uint32_t)0xD0000000)
#define SDRAM_DEVICE_SIZE  ((uint32_t)0x2000000)  /* SDRAM device size in MBytes */

/* #define SDRAM_MEMORY_WIDTH            FMC_SDRAM_MEM_BUS_WIDTH_8  */
/* #define SDRAM_MEMORY_WIDTH            FMC_SDRAM_MEM_BUS_WIDTH_16 */
#define SDRAM_MEMORY_WIDTH               FMC_SDRAM_MEM_BUS_WIDTH_32

#define SDCLOCK_PERIOD                   FMC_SDRAM_CLOCK_PERIOD_2
/* #define SDCLOCK_PERIOD                FMC_SDRAM_CLOCK_PERIOD_3 */   

#define REFRESH_COUNT                    ((uint32_t)0x0603)   /* SDRAM refresh counter (100Mhz SD clock) */
   
#define SDRAM_TIMEOUT                    ((uint32_t)0xFFFF)

/* DMA definitions for SDRAM DMA transfer */
#define __MDMAx_CLK_ENABLE                 __HAL_RCC_MDMA_CLK_ENABLE
#define __MDMAx_CLK_DISABLE                __HAL_RCC_MDMA_CLK_DISABLE
#define SDRAM_MDMAx_CHANNEL               MDMA_Channel0  
#define SDRAM_MDMAx_IRQn                  MDMA_IRQn

  
/**
  * @brief  FMC SDRAM Mode definition register defines
  */
#define SDRAM_MODEREG_BURST_LENGTH_1             ((uint16_t)0x0000)
#define SDRAM_MODEREG_BURST_LENGTH_2             ((uint16_t)0x0001)
#define SDRAM_MODEREG_BURST_LENGTH_4             ((uint16_t)0x0002)
#define SDRAM_MODEREG_BURST_LENGTH_8             ((uint16_t)0x0004)
#define SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL      ((uint16_t)0x0000)
#define SDRAM_MODEREG_BURST_TYPE_INTERLEAVED     ((uint16_t)0x0008)
#define SDRAM_MODEREG_CAS_LATENCY_2              ((uint16_t)0x0020)
#define SDRAM_MODEREG_CAS_LATENCY_3              ((uint16_t)0x0030)
#define SDRAM_MODEREG_OPERATING_MODE_STANDARD    ((uint16_t)0x0000)
#define SDRAM_MODEREG_WRITEBURST_MODE_PROGRAMMED ((uint16_t)0x0000) 
#define SDRAM_MODEREG_WRITEBURST_MODE_SINGLE     ((uint16_t)0x0200) 
/**
  * @}
  */ 
  
   
/** @addtogroup STM32H747I_DISCOVERY_SDRAM_Exported_Functions
  * @{
  */  
uint8_t BSP_SDRAM_Init(void);
uint8_t BSP_SDRAM_DeInit(void);
void    BSP_SDRAM_Initialization_sequence(uint32_t RefreshCount);
uint8_t BSP_SDRAM_ReadData(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize);
uint8_t BSP_SDRAM_ReadData_DMA(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize);
uint8_t BSP_SDRAM_WriteData(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize);
uint8_t BSP_SDRAM_WriteData_DMA(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize);
uint8_t BSP_SDRAM_Sendcmd(FMC_SDRAM_CommandTypeDef *SdramCmd);
   
/* These functions can be modified in case the current settings (e.g. DMA stream)
   need to be changed for specific application needs */
void    BSP_SDRAM_MspInit(SDRAM_HandleTypeDef  *hsdram, void *Params);
void    BSP_SDRAM_MspDeInit(SDRAM_HandleTypeDef  *hsdram, void *Params);


/**
  * @}
  */ 

/**
  * @}
  */ 

/**
  * @}
  */ 

/**
  * @}
  */ 

#ifdef __cplusplus
}
#endif

#endif /* __STM32H747I_DISCOVERY_SDRAM_H */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/