更新文件存储地址定义 #define FLASH_SECTION            (4096u)     /*扇区大小*/
#define FLASH_PAGE               (256u)      /*页大小*/
#define FLASH_SIZE               (8 * 1024 * 1024)
#define FLASH_ADDR_BASE         (0x80000000)/*Flash区域的偏移地址*/ #define FLASH_SAV_SIZE          0x00040000      //256K
#define FLASH_SAV_ADDR_OLD      (FLASH_SIZE - FLASH_SAV_SIZE)
#define FLASH_SAV_ADDR_NEW      (FLASH_SIZE - FLASH_SAV_SIZE * 2)
  #define SU_BUF_LEN              1024 1、通过USB升级 USHORT Update_USB() { BYTE FileID; SYS_VER Version; UINT WriteAddr; if (USB_Init() == 0) { FileID = USB_Open("App.bin", 0); if (FileID == 0) { printf("Open USB error "); return ERR_READ_FILE; } USB_Seek(FileID, SYS_HEADER_OFFSET + 8); USB_Read(FileID, (BYTE*)&Version, sizeof(SYS_VER)); DisplayVersion(&Version); //compare the new & old version if (Version.ProjID[0] != PROJECT_ID[0]) { printf("Update file version error... "); USB_Close(FileID); return ERR_DAT_PARA; } printf("Update file copying... "); WriteAddr = FLASH_SAV_ADDR_NEW; USB_Seek(FileID, 0); while(USB_Read(FileID, UpdateBuf, SU_BUF_LEN) != 0) { Flash_WriteBytes(WriteAddr, UpdateBuf, SU_BUF_LEN); WriteAddr += SU_BUF_LEN; } USB_Close(FileID); } else { return ERR_READ_FILE; } return UpdateCheck(); } 2、通过以太网升级，按照协议，将受到的升级文件数据写到flash存储升级文件地址上。 3、通过BootLoader 完成升级
#define BANK_A_START_ADDR       0x1A000000      //Bank A起始地址
#define BANK_B_START_ADDR       0x1B000000      //Bank B起始地址 #define SYS_APP_OFFSET          0x00008000      //Bootloader Size: 32K #define SYS_ROM1_SIZE           0x00038000      //Bank A Code:240K
#define SYS_ROM2_SIZE           0x00040000      //Bank B Code:256K #define SYS_CODE1_START         (BANK_A_START_ADDR + SYS_APP_OFFSET)
#define SYS_CODE2_START         (BANK_B_START_ADDR) #define SYS_CODE1_END           (SYS_CODE1_START + SYS_ROM1_SIZE)
#define SYS_CODE2_END           (SYS_CODE2_START + SYS_ROM2_SIZE) void BackupSystem(void) { UINT SaveAddr; UINT CodeSize1; UINT CodeSize2; UINT CodeSize; USHORT CRCResult; BYTE *pSyscode; CodeSize1 = GetSysCodeLen(0); //Get Bank A Code Size CodeSize2 = GetSysCodeLen(1); //Get Bank B Code Size CRCResult = 0; SaveAddr = FLASH_SAV_ADDR_OLD; UINT2MSB((BYTE *)&CodeSize, CodeSize1); WriteFlashBuf(&SaveAddr, (BYTE*)&CodeSize, 4); WriteFlashBuf(&SaveAddr, (BYTE*)&CRCResult, 2); UINT2MSB((BYTE *)&CodeSize, CodeSize2); WriteFlashBuf(&SaveAddr, (BYTE*)&CodeSize, 4); WriteFlashBuf(&SaveAddr, (BYTE*)&CRCResult, 2); //Backup the bank A code pSyscode = (BYTE*)SYS_CODE1_START; while (CodeSize1) { if (CodeSize1 >= IAP_FLASH_PAGE) { WriteFlashBuf(&SaveAddr, pSyscode, IAP_FLASH_PAGE); pSyscode += IAP_FLASH_PAGE; CodeSize1 -= IAP_FLASH_PAGE; } else { WriteFlashBuf(&SaveAddr, pSyscode, CodeSize1); CodeSize1 = 0; } } //Backup the bank B code pSyscode = (BYTE*)SYS_CODE2_START; while (CodeSize2) { if (CodeSize2 >= IAP_FLASH_PAGE) { WriteFlashBuf(&SaveAddr, pSyscode, IAP_FLASH_PAGE); pSyscode += IAP_FLASH_PAGE; CodeSize2 -= IAP_FLASH_PAGE; } else { WriteFlashBuf(&SaveAddr, pSyscode, CodeSize2); CodeSize2 = 0; } } if(UpdateBufLen) { Flash_WriteBytes(SaveAddr, UpdateBuf, UpdateBufLen); UpdateBufLen = 0; } } UINT CheckCodeCRC(BYTE CodeFlag) { UINT FlashAddr = 0; UINT FileSize1 = 0; UINT FileSize2 = 0; USHORT CrcValue1; USHORT CrcValue2; USHORT CrcCalc; if (CodeFlag == IAP_CODE_OLD) { return 0; } FlashAddr = FLASH_SAV_ADDR_NEW; CrcValue1 = 0; CrcValue2 = 0; Flash_ReadBytes(FlashAddr, (BYTE *)&FileSize1, 4); FileSize1 = MSB2UINT((BYTE *)&FileSize1); Flash_ReadBytes(FlashAddr + 4, (BYTE *)&CrcValue1, 2); CrcCalc = CrcValue1 & 0xFF; CrcCalc <<= 8; CrcCalc += (CrcValue1 >> 8) & 0xFF; CrcValue1 = CrcCalc; Flash_ReadBytes(FlashAddr + 6, (BYTE *)&FileSize2, 4); FileSize2 = MSB2UINT((BYTE *)&FileSize2); Flash_ReadBytes(FlashAddr + 10, (BYTE *)&CrcValue2, 2); CrcCalc = CrcValue2 & 0xFF; CrcCalc <<= 8; CrcCalc += (CrcValue2 >> 8) & 0xFF; CrcValue2 = CrcCalc; FlashAddr += (4 + 2) + (4 + 2); CrcCalc = GetFlashCodeCrc(FlashAddr, FileSize1); if (CrcCalc != CrcValue1) { return 1; } FlashAddr += FileSize1; CrcCalc = GetFlashCodeCrc(FlashAddr, FileSize2); if (CrcCalc != CrcValue2) { return 1; } return 0; } BYTE CopySystemCode(BYTE CodeFlag) { UINT FlashAddr = 0; UINT FileSize1; UINT FileSize2; BYTE Result; if(CheckCodeCRC(CodeFlag) !=0 ) { //CRC失败，不再尝试升级 IAP_WriteFlag(IAP_FLAG_NEWCODE, IAP_FLAG_CLEAR); return 1; } if(CodeFlag == IAP_CODE_OLD) { FlashAddr = FLASH_SAV_ADDR_OLD; } else { FlashAddr = FLASH_SAV_ADDR_NEW; } Flash_ReadBytes(FlashAddr, (BYTE *)&FileSize1, 4); FileSize1 = MSB2UINT((BYTE *)&FileSize1); if (FileSize1 > SYS_ROM1_SIZE) { return 1; } Flash_ReadBytes(FlashAddr+6, (BYTE *)&FileSize2, 4); FileSize2 = MSB2UINT((BYTE *)&FileSize2); if (FileSize2 > SYS_ROM2_SIZE) { return 1; } FlashAddr += (4 + 2) + (4 + 2); IAP_WriteFlag(IAP_FLAG_COPY_START, IAP_FLAG_MARK); IAP_WriteFlag(IAP_FLAG_COPY_END, IAP_FLAG_CLEAR); if (EraseBank(SYS_BANK_A)) { //Display log information return 1; } Result = CopyCodeToBank(SYS_BANK_A, FlashAddr, FileSize1); if (Result != 0) { return 1; } if (EraseBank(SYS_BANK_B)) { //Display log information return 1; } FlashAddr += FileSize1; Result = CopyCodeToBank(SYS_BANK_B, FlashAddr, FileSize2); if (Result != 0) { return 1; } IAP_WriteFlag(IAP_FLAG_COPY_START, IAP_FLAG_CLEAR); IAP_WriteFlag(IAP_FLAG_COPY_END, IAP_FLAG_MARK); return 0; } void StartSystem(void) //启动系统 { UINT BootAddr; UINT *BootPtr; Func Boot; BootAddr = SYS_CODE1_START; BootPtr = ((UINT *)BootAddr + 1); Boot = (Func)*BootPtr; Boot(); } int BootLoader_start(void) { SYS_VER Version; UINT Addr; SystemInit(); SystemCoreClock = CGU_GetPCLKFrequency(CGU_PERIPHERAL_M3CORE); E2P_Init(); //Flash_Init(); //NFTL_INIT(); Drv_Init(); NFTL_INIT(); SDRAM_Init(); //Check system Addr = SYS_CODE1_START + 0x200; memcpy((BYTE *)&Version, (BYTE*)Addr, sizeof(SYS_VER)); __disable_irq(); //是否有升级程序 if(IAP_ReadFlag(IAP_FLAG_NEWCODE) == IAP_FLAG_MARK) { DelayMs(100); BackupSystem(); //备份原来的程序 if (CopySystemCode(IAP_CODE_NEW) == 0) { IAP_WriteFlag(IAP_FLAG_NEWCODE, IAP_FLAG_CLEAR); IAP_WriteFlag(IAP_FLAG_NEWRUN, IAP_FLAG_MARK); } DelayMs(1000); } else { //是否上次升级程序运行出错 if(IAP_ReadFlag(IAP_FLAG_NEWRUN) == IAP_FLAG_MARK) { DelayMs(500); CopySystemCode(IAP_CODE_OLD); } } __enable_irq(); StartSystem(); return 0; }