AWR1642BOOST: Uniflash Working Mechanism

Hi,

In this scenario UniFlash acts as a data streamer where it reads chunk by chunk data from given file and send it to device. At the beginning of it Uniflash sends sFlash partition (1st or 2nd 512KB partition) based on user selection of MetaImage 1 or 2.

Device's ROM will read that data over UART and does the parsing of it. ROM's flashing function will check for MetaImage header and get to know the type of content and write the data on sFlash as requested.

Now, if you are trying to write an embedded application where app will write the content to sFlash using QSPIFlash driver then you need to make sure that you do the sector-erase for that chunk first and then write the content (read back and compare).

Here is the code snippet based on QSPIFlash test application for your reference where it writes the file content from L3 memory to sFlash.

    #define APP_SIZE_MAX_KB     384U
    #define APP_SIZE_MAX        (uint32_t) (APP_SIZE_MAX_KB * 1024U)
    
    /* L3 memory where MetaImage file content is loaded from CCS */
    #pragma LOCATION(gAppL3Buff , 0x51020000); 
    #pragma DATA_ALIGN(gAppL3Buff, 64);
    uint8_t  gAppL3Buff[APP_SIZE_MAX];

    flashAddr = QSPIFlash_getExtFlashAddr(QSPIFlashHandle);

    /* Set flash address for  the test */
    flashAddr = flashAddr;
    testDataLen = 256 * 4U;
    
    while(*spare3REG != 0);

    for (index = 0; index < APP_SIZE_MAX_KB; index+= 4)
    {
        /* Erase a sector for 4KB size */
        QSPIFlash_sectorErase(QSPIFlashHandle, flashAddr); //TODO JIT

        for (ij = 0; ij < 4; ij++)
        {
            /* write 1KB of data */
            QSPIFlash_singleWrite(QSPIFlashHandle, flashAddr, testDataLen, (uint8_t *)&gAppL3Buff[(index+ij)*testDataLen]);

            QSPIFlash_singleRead(QSPIFlashHandle, flashAddr, testDataLen, (uint8_t *)&readDataArray[0]);

            /* Check data */
            retVal = memcmp((void *)&gAppL3Buff[(index+ij)*testDataLen], (void *)&readDataArray[0], testDataLen) ;

            if(retVal != 0)
            {
                System_printf ("QSPIFlash single Wr/Rd comparison failed @[%d KB] \n", index+ij);
                while(1);
            }
        
            flashAddr += testDataLen;
        }
    }