#ifndef _NAND_H
#define _NAND_H
#include "stm32h7xx_hal.h"
//////////////////////////////////////////////////////////////////////////////////	 
//本程序只供学习使用，未经作者许可，不得用于其它任何用途
//ALIENTEK STM32H7开发板
//NAND驱动代码	   
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//创建日期:2017/8/16
//版本：V1.0
//版权所有，盗版必究。
//Copyright(C) 广州市星翼电子科技有限公司 2014-2024
//All rights reserved									  
////////////////////////////////////////////////////////////////////////////////// 	
//升级说明
//V1.1 20160520
//1,新增硬件ECC支持(仅在以NAND_ECC_SECTOR_SIZE大小为单位进行读写时处理)
//2,新增NAND_Delay函数,用于等待tADL/tWHR
//3,新增NAND_WritePageConst函数,用于搜寻坏块.
//V1.2 20160525
//1,去掉NAND_SEC_SIZE宏定义，由NAND_ECC_SECTOR_SIZE替代
//2,去掉nand_dev结构体里面的secbuf指针，用不到
////////////////////////////////////////////////////////////////////////////////// 	








typedef int32_t  s32;
typedef int16_t s16;
typedef int8_t  s8;

typedef const int32_t sc32;  
typedef const int16_t sc16;  
typedef const int8_t sc8;  

typedef __IO int32_t  vs32;
typedef __IO int16_t  vs16;
typedef __IO int8_t   vs8;

typedef __I int32_t vsc32;  
typedef __I int16_t vsc16; 
typedef __I int8_t vsc8;   

typedef uint32_t  u32;
typedef uint16_t u16;
typedef uint8_t  u8;

typedef const uint32_t uc32;  
typedef const uint16_t uc16;  
typedef const uint8_t uc8; 

typedef __IO uint32_t  vu32;
typedef __IO uint16_t vu16;
typedef __IO uint8_t  vu8;

typedef __I uint32_t vuc32;  
typedef __I uint16_t vuc16; 
typedef __I uint8_t vuc8;  








#define NAND_MAX_PAGE_SIZE			4096		//定义NAND FLASH的最大的PAGE大小（不包括SPARE区），默认4096字节
#define NAND_ECC_SECTOR_SIZE		512			//执行ECC计算的单元大小，默认512字节

//NAND FLASH操作相关延时函数
#define NAND_TADL_DELAY				35			//tADL等待延迟,最少70ns
#define NAND_TWHR_DELAY				30			//tWHR等待延迟,最少60ns
#define NAND_TRHW_DELAY				50			//tRHW等待延迟,最少100ns
#define NAND_TPROG_DELAY			350			//tPROG等待延迟,典型值200us,最大需要700us
#define NAND_TBERS_DELAY			4			//tBERS等待延迟,典型值3.5ms,最大需要10ms
#define NAND_TRST_FIRST_DELAY		3			//tRST复位后的第一次等待时间，最大为3ms

//NAND属性结构体
typedef struct
{
    u16 page_totalsize;     	//每页总大小，main区和spare区总和
    u16 page_mainsize;      	//每页的main区大小
    u16 page_sparesize;     	//每页的spare区大小
    u8  block_pagenum;      	//每个块包含的页数量
    u16 plane_blocknum;     	//每个plane包含的块数量
    u16 block_totalnum;     	//总的块数量
    u16 good_blocknum;      	//好块数量    
    u16 valid_blocknum;     	//有效块数量(供文件系统使用的好块数量)
    u32 id;             		//NAND FLASH ID
    u16 *lut;      			   	//LUT表，用作逻辑块-物理块转换
	u32 ecc_hard;				//硬件计算出来的ECC值
	u32 ecc_hdbuf[NAND_MAX_PAGE_SIZE/NAND_ECC_SECTOR_SIZE];//ECC硬件计算值缓冲区  	
	u32 ecc_rdbuf[NAND_MAX_PAGE_SIZE/NAND_ECC_SECTOR_SIZE];//ECC读取的值缓冲区
}nand_attriute;      

extern nand_attriute nand_dev;				//nand重要参数结构体 

#define NAND_RB  	            HAL_GPIO_ReadPin(GPIOD,GPIO_PIN_6)//NAND Flash的闲/忙引脚

#define NAND_ADDRESS			0X80000000	//nand flash的访问地址,接NCE3,地址为:0X8000 0000
#define NAND_CMD				1<<16		//发送命令
#define NAND_ADDR				1<<17		//发送地址

//NAND FLASH命令
#define NAND_READID         	0X90    	//读ID指令
#define NAND_FEATURE			0XEF    	//设置特性指令
#define NAND_RESET          	0XFF    	//复位NAND
#define NAND_READSTA        	0X70   	 	//读状态
#define NAND_AREA_A         	0X00   
#define NAND_AREA_TRUE1     	0X30  
#define NAND_WRITE0        	 	0X80
#define NAND_WRITE_TURE1    	0X10
#define NAND_ERASE0        	 	0X60
#define NAND_ERASE1         	0XD0
#define NAND_MOVEDATA_CMD0  	0X00
#define NAND_MOVEDATA_CMD1  	0X35
#define NAND_MOVEDATA_CMD2  	0X85
#define NAND_MOVEDATA_CMD3  	0X10

//NAND FLASH状态
#define NSTA_READY       	   	0X40		//nand已经准备好
#define NSTA_ERROR				0X01		//nand错误
#define NSTA_TIMEOUT        	0X02		//超时
#define NSTA_ECC1BITERR       	0X03		//ECC 1bit错误
#define NSTA_ECC2BITERR       	0X04		//ECC 2bit以上错误


//NAND FLASH型号和对应的ID号
#define MT29F4G08ABADA			0XDC909556	//MT29F4G08ABADA
#define MT29F16G08ABABA			0X48002689	//MT29F16G08ABABA

//MPU相关设置
#define NAND_REGION_NUMBER      MPU_REGION_NUMBER4	    //NAND FLASH使用region4
#define NAND_ADDRESS_START      0X80000000              //NAND FLASH区的首地址
#define NAND_REGION_SIZE        MPU_REGION_SIZE_256MB   //NAND FLASH区大小

u8 NAND_Init(void);
u8 NAND_ModeSet(u8 mode);
u32 NAND_ReadID(void);
u8 NAND_ReadStatus(void);
u8 NAND_WaitForReady(void);
u8 NAND_Reset(void);
u8 NAND_WaitRB(vu8 rb);
void NAND_Delay(vu32 i);
void NAND_MPU_Config(void);
u8 NAND_ReadPage(u32 PageNum,u16 ColNum,u8 *pBuffer,u16 NumByteToRead);
u8 NAND_ReadPageComp(u32 PageNum,u16 ColNum,u32 CmpVal,u16 NumByteToRead,u16 *NumByteEqual);
u8 NAND_WritePage(u32 PageNum,u16 ColNum,u8 *pBuffer,u16 NumByteToWrite);
u8 NAND_WritePageConst(u32 PageNum,u16 ColNum,u32 cval,u16 NumByteToWrite);
u8 NAND_CopyPageWithoutWrite(u32 Source_PageNum,u32 Dest_PageNum);
u8 NAND_CopyPageWithWrite(u32 Source_PageNum,u32 Dest_PageNum,u16 ColNum,u8 *pBuffer,u16 NumByteToWrite);
u8 NAND_ReadSpare(u32 PageNum,u16 ColNum,u8 *pBuffer,u16 NumByteToRead);
u8 NAND_WriteSpare(u32 PageNum,u16 ColNum,u8 *pBuffer,u16 NumByteToRead);
u8 NAND_EraseBlock(u32 BlockNum);
void NAND_EraseChip(void);

u16 NAND_ECC_Get_OE(u8 oe,u32 eccval);
u8 NAND_ECC_Correction(u8* data_buf,u32 eccrd,u32 ecccl);
#endif