CyU3PReturnStatus_t NuandLockOtp() {
CyU3PReturnStatus_t status = CY_U3P_SUCCESS;
uint8_t location[1];
uint8_t read_status;
status = FlashReadStatus(&read_status);
location[0] = 0x06; /* Write enable. */
status = CyU3PSpiSetSsnLine (CyFalse);
status = CyU3PSpiTransmitWords (location, 1);
status = CyU3PSpiSetSsnLine (CyTrue);
status = FlashReadStatus(&read_status);
location[0] = 0x2f;// WRSCUR
status = CyU3PSpiSetSsnLine (CyFalse);
status = CyU3PSpiTransmitWords (location, 1);
status = CyU3PSpiSetSsnLine (CyTrue);
location[0] = 0x02;// Page program
status = CyU3PSpiSetSsnLine (CyFalse);
status = CyU3PSpiTransmitWords (location, 1);
status = CyU3PSpiSetSsnLine (CyTrue);
location[0] = 0x2b; /* RDSCUR */
status = CyU3PSpiSetSsnLine (CyFalse);
status = CyU3PSpiTransmitWords (location, 1);
status = CyU3PSpiReceiveWords(location, 1);
status = CyU3PSpiSetSsnLine (CyTrue);
return status;
}
// Commit the loaded page buffer
char NandStorePage(void)
{
unsigned char status;
FLASH_CE = 0; // Chip select
NandWriteCommand(FLASH_PAGE_PROGRAM_COPY_BACK_2 );
FLASH_CE = 1; // Chip deselect
FLASH_WAIT_RB(); // Wait for page to copy
status = FlashReadStatus(); // Get status
if (status & FLASH_STATUS_FLAG_FAILED) return (FALSE); // Failed
else return (TRUE); // Pass
}
/********************************************************************
函数功能：擦除一个块。
入口参数：Addr：字节地址。
返 回：无。
备 注：无。
********************************************************************/
uint8 FlashEraseBlock(uint32 Addr)
{
//擦除命令第一字节命令
FlashWriteCommand(0x60);
//写入两字节的页地址
FlashWritePageAddr(Addr);
//写入擦除命令第二字节
FlashWriteCommand(0xD0);
//等待擦除完成
FlashWait();
//返回操作状态
return FlashReadStatus();
}
/********************************************************************
函数功能：复制一页数据。
入口参数：sAddr：源地址；dAddr：目标地址。
返 回：无。
备 注：操作的状态。
********************************************************************/
uint8 FlashCopyPage(uint32 sAddr, uint32 dAddr)
{
//读源数据到内部缓存
FlashWriteCommand(0x00);
FlashWriteAddr4Byte(sAddr);
FlashWriteCommand(0x35);
FlashWait();
//将数据写到目标页
FlashWriteCommand(0x85);
FlashWriteAddr4Byte(dAddr);
FlashWriteCommand(0x10);
FlashWait();
return FlashReadStatus();
}
// Commit the loaded page buffer to a different destination
char NandStorePageRepeat(unsigned short destBlock, unsigned char destPage)
{
unsigned char status;
FormAddressBP(destBlock,destPage); // See macro
FLASH_WAIT_RB(); // Wait for previous operations
FLASH_CE = 0; // Chip select
NandWriteCommand(FLASH_PAGE_PROGRAM_COPY_BACK_1 );
NandWriteAddress5B(); // Specify new desination
NandWriteCommand(FLASH_PAGE_PROGRAM_COPY_BACK_2 );
FLASH_CE = 1; // Chip deselect
FLASH_WAIT_RB(); // Wait for page to copy
status = FlashReadStatus(); // Get status
if (status & FLASH_STATUS_FLAG_FAILED) return (FALSE); // Failed
else return (TRUE); // Pass
}
// Copy a page
char NandCopyPage(unsigned short srcBlock, unsigned char srcPage, unsigned short destBlock, unsigned char destPage) // Copes with unknown source
{
unsigned char status;
FormAddressBP(srcBlock,srcPage); // See macro
FLASH_CE = 0; // Chip enable
FLASH_WAIT_RB(); // Wait for previous operations
NandWriteCommand(FLASH_READ_COMMAND_COPY_BACK_1); // Read for copy back
NandWriteAddress5B(); // Specify source address
NandWriteCommand(FLASH_READ_COMMAND_COPY_BACK_2);
FormAddressBP(destBlock,destPage); // See macro
FLASH_WAIT_RB(); // Wait for page to load
NandWriteCommand(FLASH_PAGE_PROGRAM_COPY_BACK_1);
NandWriteAddress5B(); // Specify destination address
NandWriteCommand(FLASH_PAGE_PROGRAM_COPY_BACK_2);
FLASH_CE = 1; // Deselect
FLASH_WAIT_RB(); // Wait for page program
status = FlashReadStatus(); // Get status
if (status & FLASH_STATUS_FLAG_FAILED) return (FALSE); // Failed
else return (TRUE); // Pass
}
/********************************************************************
函数功能：页写命令的后半部分。
入口参数：无。
返 回：无。
备 注：操作的状态。
********************************************************************/
uint8 FlashWritePage(void)
{
FlashWriteCommand(0x10); //页写命令
FlashWait(); //等待写完成
return FlashReadStatus();
}
