Hi,
Ok thanks. I have checked all address, data and dummy cycles but didn't find anything wrong. Below I am sharing MT25ql128 data sheet command details and code I am using to write and read from serial flash. I have tried both READ & FAST READ command and dummy cycles as 0 and 10 respectively but in both cases getting 0x88 data.
/**
* @brief Writes an amount of data to the QSPI memory.
* @param pData: Pointer to data to be written
* @param WriteAddr: Write start address
* @param Size: Size of data to write
* @retval QSPI memory status
*/
uint8_t BSP_QSPI_Write(uint8_t *pData, uint32_t WriteAddr, uint32_t Size)
{
QSPI_CommandTypeDef sCommand;
uint32_t end_addr, current_size, current_addr;
/* Calculation of the size between the write address and the end of the page */
current_addr = 0;
while (current_addr <= WriteAddr)
{
current_addr += MT25Q128A_PAGE_SIZE;
}
current_size = current_addr - WriteAddr;
/* Check if the size of the data is less than the remaining place in the page */
if (current_size > Size)
{
current_size = Size;
}
/* Initialize the adress variables */
current_addr = WriteAddr;
end_addr = WriteAddr + Size;
/* Initialize the program command */
sCommand.InstructionMode = QSPI_INSTRUCTION_4_LINES;
sCommand.Instruction = PAGE_PROG_CMD; // 0x02
sCommand.AddressMode = QSPI_ADDRESS_4_LINES;
sCommand.AddressSize = QSPI_ADDRESS_24_BITS;
sCommand.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;
sCommand.DataMode = QSPI_DATA_4_LINES;
sCommand.DummyCycles = 0;
sCommand.DdrMode = QSPI_DDR_MODE_DISABLE;
sCommand.DdrHoldHalfCycle = QSPI_DDR_HHC_ANALOG_DELAY;
sCommand.SIOOMode = QSPI_SIOO_INST_EVERY_CMD;
/* Perform the write page by page */
do
{
sCommand.Address = current_addr;
sCommand.NbData = current_size;
/* Enable write operations */
if (QSPI_WriteEnable(&QSPIHandle) != QSPI_OK)
{
return QSPI_ERROR;
}
/* Configure the command */
if (HAL_QSPI_Command(&QSPIHandle, &sCommand, HAL_QPSI_TIMEOUT_DEFAULT_VALUE) != HAL_OK)
{
return QSPI_ERROR;
}
/* Transmission of the data */
if (HAL_QSPI_Transmit(&QSPIHandle, pData, HAL_QPSI_TIMEOUT_DEFAULT_VALUE) != HAL_OK)
{
return QSPI_ERROR;
}
/* Configure automatic polling mode to wait for end of program */
if (QSPI_AutoPollingMemReady(&QSPIHandle, HAL_QPSI_TIMEOUT_DEFAULT_VALUE) != QSPI_OK)
{
return QSPI_ERROR;
}
/* Update the address and size variables for next page programming */
current_addr += current_size;
pData += current_size;
current_size = ((current_addr + MT25Q128A_PAGE_SIZE) > end_addr) ? (end_addr - current_addr) : MT25Q128A_PAGE_SIZE;
}
while (current_addr < end_addr);
return QSPI_OK;
}
/**
* @brief Reads an amount of data from the QSPI memory.
* @param pData: Pointer to data to be read
* @param ReadAddr: Read start address
* @param Size: Size of data to read
* @retval QSPI memory status
*/
uint8_t BSP_QSPI_Read(uint8_t *pData, uint32_t ReadAddr, uint32_t Size)
{
QSPI_CommandTypeDef sCommand;
/* Initialize the read command */
sCommand.InstructionMode = QSPI_INSTRUCTION_4_LINES;
sCommand.Instruction = READ_CMD; //0x03
sCommand.AddressMode = QSPI_ADDRESS_4_LINES;
sCommand.AddressSize = QSPI_ADDRESS_24_BITS;
sCommand.Address = ReadAddr;
sCommand.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;
sCommand.DataMode = QSPI_DATA_4_LINES;
sCommand.DummyCycles = 0;
sCommand.NbData = Size;
sCommand.DdrMode = QSPI_DDR_MODE_DISABLE;
sCommand.DdrHoldHalfCycle = QSPI_DDR_HHC_ANALOG_DELAY;
sCommand.SIOOMode = QSPI_SIOO_INST_EVERY_CMD;
/* Configure the command */
if (HAL_QSPI_Command(&QSPIHandle, &sCommand, HAL_QPSI_TIMEOUT_DEFAULT_VALUE) != HAL_OK)
{
return QSPI_ERROR;
}
/* Reception of the data */
if (HAL_QSPI_Receive(&QSPIHandle, pData, HAL_QPSI_TIMEOUT_DEFAULT_VALUE) != HAL_OK)
{
return QSPI_ERROR;
}
return QSPI_OK;
}
Could you please help to check, am I doing anything wrong in terms of address, data and dummy cycles.
Thanks,
John
