Tool/software: Code Composer Studio
Hello,
I am trying to write to flash on the AM437x Industrial Development Kit.
I have access to the QSPI_BasicExample_idkAM437x_armExampleProject.
I have also integrated the spi_test() and spi_read_write() from the example.
Here is the problem: If this number is changed to anything below 64, it works. When this number is 64 or greater it fails.
void spi_test()
{
SPI_Params spiParams; /* SPI params structure */
S25FL_Handle flashHandle; /* Flash handle */
bool retVal = false; /* return value */
/* Init SPI driver */
SPI_init();
/* Default SPI configuration parameters */
SPI_Params_init(&spiParams);
/* Open QSPI driver */
flashHandle = SF25FL_open(((QSPI_INSTANCE - 1)+(QSPI_OFFSET)), &spiParams);
/* Print flash Id */
FlashPrintId(flashHandle);
/* Set the transfer length in number of 32 bit words */
transferLength = 50;
/* read/write test on block 0, address 0 */
retVal = spi_read_write(flashHandle, 0, transferLength);
if (retVal == true)
{
/* read/write test on block 256, address 16M */
retVal = spi_read_write(flashHandle, 256, transferLength);
}
SF25FL_close(flashHandle);
if(true == retVal)
{
DebugLog::Write("\n All tests have passed. \n");
}
else
{
DebugLog::Write("\n Some tests have failed. \n");
}
while(1);
}
I have narrowed it to failing at the highlighted line below in the function in the class S25FL.c: bool SF25FL_bufferWrite(S25FL_Handle flashHandle, S25FL_Transaction* flashTransaction)
if(QSPI_OPER_MODE_MMAP == object->qspiMode)
{
for(idx = 0; idx < length; idx++)
{
/* Write enable */
S25FLFlash_WriteEnable(flashHandle);
/* Perform the transfer */
transaction.txBuf = (unsigned char *)dstOffstAddr;
transaction.rxBuf = srcAddr;
transaction.count = 1;
transferType = SPI_TRANSACTION_TYPE_WRITE;
if (dstOffstAddr > 0xFFFFFFU)
{
transferCmd = QSPI_LIB_CMD_PAGE_PRG_4B;
}
else
{
transferCmd = QSPI_LIB_CMD_PAGE_PRG;
}
SPI_control(handle, SPI_V1_CMD_TRANSFERMODE_RW, (void *)&transferType);
SPI_control(handle, SPI_V1_CMD_MMAP_TRANSFER_CMD, (void *)&transferCmd);
retVal = SPI_transfer(handle, &transaction);
/* Check flash status for completion */
while ((FlashStatus(flashHandle) & 0x1U));
dstOffstAddr += 1;
srcAddr += 1;
}
}
Seeing as I am using example code, I am wondering why this is failing.
Any help would be greatly appreciated.
