Filex/Levelx on the nand flashW25N01GVZEIG on stm32u575zit6

[CCao.1]

Hi, there; I am using stm32u575zit6 to make a demo, I configured the threadx/filex/levelx for the system as I would like to have the filex on nand flash W25N01GVZEIG. Here I met a strange issues for the files opeations, I debugged for weeks, but I cannot figure it out. Here is the description
1: I can successfully open/write/read/close the files
2: I am sure that when I wrote into the file, it was written into the nand flash and made sure it was wirtting sucessfully as I read it back to confirm in nand flash driver level
3: But when I reopen the files to read out , I found the files are still old ones.
4: the nand driver is writted with reference to the examples of the Fx_Dual_Instance

Is it possible the stcubemx configuration issues or my driver's issues?
thank you Chengtao

The nand driver is as the following:

u8 NAND_ReadPage(u32 PageNum,u16 start,u8 *destination,ULONG words)

{

u8 ret = 0;

u16 load_len;

flashPageRead(&spi_flash, PageNum);

// Addr is column address

flashDataBuffer[0] = W25X_ReadData;

flashDataBuffer[1] = (start>>8) & 0xFF;

flashDataBuffer[2] = start & 0xFF;

flashDataBuffer[3] = 0x0;

load_len = words+4;

sendFlashCommand(&spi_flash,(void *)flashDataBuffer,load_len);

load_len = 4;

memcpy(destination,&flashDataBuffer[load_len],words);

return ret;

}

u8 NAND_WritePage(u32 PageNum,u16 start,u8* source,ULONG words)

{

u8 ret = 0;

u16 load_len;

flashDataBuffer[0] = W25X_WriteEnable;

sendFlashCommand(&spi_flash,(void *)flashDataBuffer,1);

//Load Data to column adress

flashDataBuffer[0] = W25X_LoadProgramData;

flashDataBuffer[1] = (start>>8) & 0xFF;

flashDataBuffer[2] = start & 0xFF;

load_len = 3;

memcpy(&flashDataBuffer[load_len],source,words);

load_len += words;

sendFlashCommand(&spi_flash,(void *)flashDataBuffer,load_len);

//Program  the page address

flashDataBuffer[0] = W25X_ProgramExcute;

flashDataBuffer[1] = 0x0;

flashDataBuffer[2] = (PageNum>>8) & 0xFF;

flashDataBuffer[3] = PageNum & 0xFF;

sendFlashCommand(&spi_flash,(void *)flashDataBuffer,4);

flashWaitBusy(&spi_flash,100);

flashDataBuffer[0] = W25X_WriteDisable;

sendFlashCommand(&spi_flash,(void *)flashDataBuffer,1);

tx_thread_sleep(1);

ret = checkPageWrite(PageNum,start, source,words);

return ret;

}

u8 NAND_ReadSpare(u32 PageNum,u16 start,u8* destination,ULONG words)

{

u16 load_len;

flashPageRead(&spi_flash, PageNum);

flashDataBuffer[0] = W25X_ReadData;

flashDataBuffer[1] = (PAGE_SIZE+start)>>8 & 0xFF;

flashDataBuffer[2] = (PAGE_SIZE+start) & 0xFF;

flashDataBuffer[3] = 0x0;

load_len = 4+words;

sendFlashCommand(&spi_flash,(void *)flashDataBuffer,load_len);

load_len = 4;

memcpy(destination,&flashDataBuffer[load_len],words);

return 0;

}

u8 NAND_WriteSpare(u32 PageNum,u16 start,u8* source,ULONG words)

{

u8 ret = 0;

u16 load_len;

flashDataBuffer[0] = W25X_WriteEnable;

sendFlashCommand(&spi_flash,(void *)flashDataBuffer,1);

//Load Data to column adress

flashDataBuffer[0] = W25X_LoadProgramData;

flashDataBuffer[1] = (PAGE_SIZE+start)>>8 & 0xFF;

flashDataBuffer[2] = (PAGE_SIZE+start) & 0xFF;

load_len = 3;

memcpy(&flashDataBuffer[load_len],source,words);

load_len += words;

sendFlashCommand(&spi_flash,(void *)flashDataBuffer,load_len);

//Program  the page address

flashDataBuffer[0] = W25X_ProgramExcute;

flashDataBuffer[1] = 0x0;

flashDataBuffer[2] = (PageNum>>8) & 0xFF;

flashDataBuffer[3] = PageNum & 0xFF;

sendFlashCommand(&spi_flash,(void *)flashDataBuffer,4);

flashWaitBusy(&spi_flash,100);

flashDataBuffer[0] = W25X_WriteDisable;

sendFlashCommand(&spi_flash,(void *)flashDataBuffer,1);

tx_thread_sleep(1);

ret = checkSpareWrite(PageNum,start, source,words);

return ret;

}

u8 NAND_EraseBlock(ULONG block)

{

int32_t ret = 0;

u16 pageStart = (u16)(block << 6);

ret = flashErase(&spi_flash,pageStart);

if(ret < 0)

return 2;

else

return 0;

}