##include "include.h" #include "Nand_Flash.h" void Nand_FSMC_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; FSMC_NAND_PCCARDTimingInitTypeDef p; FSMC_NANDInitTypeDef FSMC_NANDInitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG,ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_14 | GPIO_Pin_15 | GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_7; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOD,&GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10; GPIO_Init(GPIOE,&GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; GPIO_Init(GPIOD,&GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; GPIO_Init(GPIOG,&GPIO_InitStructure); p.FSMC_SetupTime = 0x1; //建立时间 p.FSMC_WaitSetupTime = 0x3; //等待时间 p.FSMC_HoldSetupTime = 0x2; //保持时间 p.FSMC_HiZSetupTime = 0x1; //高阻建立时间 FSMC_NANDInitStructure.FSMC_Bank = FSMC_Bank2_NAND; //使用FSMC BANK2 FSMC_NANDInitStructure.FSMC_Waitfeature = FSMC_Waitfeature_Enable; //使能FSMC的等待功能 FSMC_NANDInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_8b; //NAND Flash的数据宽度为8位 FSMC_NANDInitStructure.FSMC_ECC = FSMC_ECC_Enable; //使能ECC特性 FSMC_NANDInitStructure.FSMC_ECCPageSize = FSMC_ECCPageSize_2048Bytes; //ECC页大小2048 FSMC_NANDInitStructure.FSMC_TClrsetupTime = 0x00; FSMC_NANDInitStructure.FSMC_TARSetupTime = 0x00; FSMC_NANDInitStructure.FSMC_CommonSpaceTimingStruct = &p; FSMC_NANDInitStructure.FSMC_AttributeSpaceTimingStru ct = &p; FSMC_NANDInit(&FSMC_NANDInitStructure); FSMC_NANDCmd(FSMC_Bank2_NAND,ENABLE); } uint8 Nand_GetState(void) { NAND_CMD=0x70; return NAND_DAT8; } void Nand_WriteAddr(uint32 RowAddr,uint16 ColAddr) { NAND_ADR16=ColAddr; NAND_ADR=(uint8)RowAddr; NAND_ADR16=(RowAddr>>8); } uint32 Nand_GetID(void) { NAND_CMD=0x90; NAND_ADR=0x00; return NAND_DAT32; } void Nand_ReadPage(uint32 StartPage,uint8 *rBuffer,uint16 ByteOffset,uint16 Length) { uint16 *DP=(uint16 *)rBuffer; NAND_CMD=0x00; Nand_WriteAddr(StartPage,ByteOffset); NAND_CMD=0x30; Tos_TaskDelay(1); Length>>=1; do{ *DP++=NAND_DAT16; }while(--Length); } void Nand_ReadPage_Random(uint16 ByteOffset,uint16 Length) { NAND_CMD=0x05; NAND_ADR=(uint8)(ByteOffset); NAND_ADR=(uint8)(ByteOffset>>8); //写入页内偏移地址 NAND_CMD=0xE0; while(Length--)*rBuffer++=NAND_DAT8; } void Nand_FillPage(uint32 StartPage,uint8 Data,uint16 Length) { uint32 T; T=Data;T<<=8;T|=Data;T<<=8;T|=Data;T<<=8;T|=Data; // 合并成32Bit数据 NAND_CMD=0x80; Nand_WriteAddr(StartPage,ByteOffset); Length>>=2; do{NAND_DAT32=T;}while(--Length); NAND_CMD=0x10; } void Nand_WritePage(uint32 StartPage,uint8 *wBuffer,uint16 Length) { NAND_CMD=0x80; Nand_WriteAddr(StartPage,ByteOffset); while(Length--)NAND_DAT8=*wBuffer++; NAND_CMD=0x10; } void Nand_WritePage_WriteStart(uint32 StartPage) { NAND_CMD=0x80; Nand_WriteAddr(StartPage,0); // 按照物理页大小进行读取 } void Nand_WritePage_Writerandom(uint16 ByteOffset,uint16 Length) { NAND_CMD=0x85; NAND_ADR=(uint8)(ByteOffset); NAND_ADR=(uint8)(ByteOffset>>8); while(Length--)NAND_DAT8=*wBuffer++; } void Nand_WritePage_WriteStop(void) { NAND_CMD=0x10; } void Nand_copyBack(uint32 StartPage,uint32 DestPage) { NAND_CMD=0x00; Nand_WriteAddr(StartPage,0); NAND_CMD=0x35; NAND_CMD=0x85; Nand_WriteAddr(DestPage,0); NAND_CMD=0x10; } void Nand_copyBack_WriteStart(uint32 StartPage,0); } void Nand_copyBack_Writerandom(uint16 ByteOffset,uint16 Length) { // uint32 *DP=(uint32 *)wBuffer; NAND_CMD=0x85; NAND_ADR=(uint8)(ByteOffset); NAND_ADR=(uint8)(ByteOffset>>8); while(Length--)NAND_DAT8=*wBuffer++; // Length>>=2; // do{NAND_DAT32=*DP++;}while(--Length); } void Nand_copyBack_WriteStop(void) { NAND_CMD=0x10; } void Nand_EraseBlock(uint32 BlockAddr) { NAND_CMD=0x60; BlockAddr*=NAND_BLOCK_SIZE; //转换到块地址 NAND_ADR=(uint8)BlockAddr; NAND_ADR=(uint8)(BlockAddr>>8); NAND_ADR=(uint8)(BlockAddr>>16); NAND_CMD=0xD0; } void NandFlash_Write(void *Addr,void *Data,void *Length) { } void NandFlash_Read(void *Addr,void *Length) { } void DeviceMount_NandFlash() { _Tos_Device_Tab[deviceid_NandFlash].deviceid=deviceid_NandFlash; _Tos_Device_Tab[deviceid_NandFlash].DeviceName="NandFlash"; _Tos_Device_Tab[deviceid_NandFlash].DeviceOwnerId=Null; _Tos_Device_Tab[deviceid_NandFlash].DeviceVirtue=ReadOnly|writeonly|CharDerice; _Tos_Device_Tab[deviceid_NandFlash].DeviceState=Ready; _Tos_Device_Tab[deviceid_NandFlash].Init=Nand_FSMC_Init; _Tos_Device_Tab[deviceid_NandFlash].Write=NandFlash_Write; _Tos_Device_Tab[deviceid_NandFlash].Read=NandFlash_Read; _Tos_Device_Tab[deviceid_NandFlash].Exit=Null; }
