71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
/*
|
|
* File : drv_sdram.h
|
|
* This file is part of RT-Thread RTOS
|
|
* COPYRIGHT (C) 2016 RT-Thread Develop Team
|
|
*
|
|
* The license and distribution terms for this file may be
|
|
* found in the file LICENSE in this distribution or at
|
|
* http://www.rt-thread.org/license/LICENSE
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2016-08-20 xuzhuoyi The first version for STM32F42x
|
|
*/
|
|
|
|
/* Define to prevent recursive inclusion -------------------------------------*/
|
|
#ifndef __DRV_SDRAM_H
|
|
#define __DRV_SDRAM_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include <rtthread.h>
|
|
#include <board.h>
|
|
|
|
|
|
#define SDRAM_BANK_ADDR ((uint32_t)0XC0000000)
|
|
|
|
/* #define SDRAM_MEMORY_WIDTH FMC_SDRAM_MEM_BUS_WIDTH_8 */
|
|
#define SDRAM_MEMORY_WIDTH FMC_SDRAM_MEM_BUS_WIDTH_16
|
|
|
|
#define SDCLOCK_PERIOD FMC_SDRAM_CLOCK_PERIOD_2
|
|
/* #define SDCLOCK_PERIOD FMC_SDRAM_CLOCK_PERIOD_3 */
|
|
|
|
#define SDRAM_TIMEOUT ((uint32_t)0xFFFF)
|
|
|
|
#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)
|
|
|
|
#define BUFFER_SIZE ((uint32_t)0x0100)
|
|
#define WRITE_READ_ADDR ((uint32_t)0x0800)
|
|
#define REFRESH_COUNT ((uint32_t)0x02AB) /* SDRAM refresh counter (90MHz SD clock) */
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup STM32429I_DISCO_SDRAM_Exported_Functions
|
|
* @{
|
|
*/
|
|
void SDRAM_Init(void);
|
|
void SDRAM_GPIOConfig(void);
|
|
void SDRAM_InitSequence(void);
|
|
void SDRAM_WriteBuffer(uint32_t* pBuffer, uint32_t uwWriteAddress, uint32_t uwBufferSize);
|
|
void SDRAM_ReadBuffer(uint32_t* pBuffer, uint32_t uwReadAddress, uint32_t uwBufferSize);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|