I successfully initialize W25Q256 nor flash with STM32F746 MCU through Quad SPI protocol. Every command works fine (write memory, write Enable, erase sector, read and write status registers)
1-But when I debug the code and inspect the memory address 0x90000000, the data is written 2-bytes earlier (from 0x8FFFFFE memory address)
2-And chip-erase command (C7h) is not working. this is weird because the sector-erase command just works fine! I checked the manufacturer datasheet several times but no luck with the erase-command to get to work.
I uploaded the codes and memory address views to maybe experts in the community to help me out. note that the raw code is copied from ST public storage on GitHub with slight changes according to the Winbond flash datasheet.
uint8_t
CSP_QSPI_WriteMemory(uint8_t* buffer, uint32_t address, uint32_t buffer_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 <= address) {
current_addr += MEMORY_PAGE_SIZE;
}
current_size = current_addr - address;
/* Check if the size of the data is less than the remaining place in the page */
if (current_size > buffer_size) {
current_size = buffer_size;
}
/* Initialize the adress variables */
current_addr = address;
end_addr = address + buffer_size;
sCommand.InstructionMode = QSPI_INSTRUCTION_1_LINE;
sCommand.AddressSize = QSPI_ADDRESS_32_BITS;
sCommand.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;
sCommand.DdrMode = QSPI_DDR_MODE_DISABLE;
sCommand.DdrHoldHalfCycle = QSPI_DDR_HHC_ANALOG_DELAY;
sCommand.SIOOMode = QSPI_SIOO_INST_EVERY_CMD;
sCommand.Instruction = QUAD_IN_FAST_PROG_CMD;
sCommand.AddressMode = QSPI_ADDRESS_1_LINE;
sCommand.DataMode = QSPI_DATA_4_LINES;
sCommand.NbData = buffer_size;
sCommand.Address = address;
sCommand.DummyCycles = 0;
/* Perform the write page by page */
do {
sCommand.Address = current_addr;
sCommand.NbData = current_size;
if (current_size == 0) {
return HAL_OK;
}
/* Enable write operations */
if (QSPI_WriteEnable() != HAL_OK) {
return HAL_ERROR;
}
/* Configure the command */
if (HAL_QSPI_Command(&hqspi, &sCommand, HAL_QPSI_TIMEOUT_DEFAULT_VALUE)
!= HAL_OK) {
return HAL_ERROR;
}
/* Transmission of the data */
if (HAL_QSPI_Transmit(&hqspi, buffer, HAL_QPSI_TIMEOUT_DEFAULT_VALUE) != HAL_OK) {
return HAL_ERROR;
}
/* Configure automatic polling mode to wait for end of program */
if (QSPI_AutoPollingMemReady() != HAL_OK) {
return HAL_ERROR;
}
/* Update the address and size variables for next page programming */
current_addr += current_size;
buffer += current_size;
current_size =
((current_addr + MEMORY_PAGE_SIZE) > end_addr) ?
(end_addr - current_addr) : MEMORY_PAGE_SIZE;
} while (current_addr <= end_addr);
return HAL_OK;
}
uint8_t
CSP_QSPI_Erase_Chip(void) {
QSPI_CommandTypeDef sCommand;
/* Erasing Sequence --------------------------------- */
sCommand.Instruction = CHIP_ERASE_CMD;
sCommand.InstructionMode = QSPI_INSTRUCTION_1_LINE;
sCommand.AddressSize = QSPI_ADDRESS_32_BITS;
sCommand.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;
sCommand.DdrMode = QSPI_DDR_MODE_DISABLE;
sCommand.DdrHoldHalfCycle = QSPI_DDR_HHC_ANALOG_DELAY;
sCommand.SIOOMode = QSPI_SIOO_INST_EVERY_CMD;
sCommand.AddressMode = QSPI_ADDRESS_NONE;
sCommand.Address = 0;
sCommand.DataMode = QSPI_DATA_NONE;
sCommand.DummyCycles = 0;
if (QSPI_WriteEnable() != HAL_OK) {
return HAL_ERROR;
}
if (HAL_QSPI_Command(&hqspi, &sCommand, HAL_QPSI_TIMEOUT_DEFAULT_VALUE)
!= HAL_OK) {
return HAL_ERROR;
}
if (QSPI_AutoPollingMemReady() != HAL_OK) {
return HAL_ERROR;
}
return HAL_OK;
}
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