M95P32 EEPROM using QSPI interface on Nucleo-L496ZGP

[Gowthami412]

Board added to title; STM32L4 Label added.

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I started Working With M95P32 EEPROM which Supports QSPI . This is my code which is not working I don't understand why there is no error in transmit and receive code. But same EEPROM working with SPI.

void QSPI_WriteEnable(void) {

QSPI_CommandTypeDef sCommand;



sCommand.InstructionMode = QSPI_INSTRUCTION_1_LINE;

sCommand.Instruction = WRITE_ENABLE_CMD;

sCommand.AddressMode = QSPI_ADDRESS_NONE;

sCommand.DataMode = QSPI_DATA_NONE;

sCommand.DummyCycles = 0;

sCommand.NbData = 0;

sCommand.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_RESET);

HAL_QSPI_Command(&hqspi, &sCommand, HAL_QSPI_TIMEOUT_DEFAULT_VALUE);

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_SET);

}





void QSPI_ChipErase(void) {

QSPI_CommandTypeDef sCommand;





sCommand.InstructionMode = QSPI_INSTRUCTION_1_LINE;

sCommand.Instruction = CHIP_ERASE_CMD;

sCommand.AddressMode = QSPI_ADDRESS_NONE;

sCommand.DataMode = QSPI_DATA_NONE;

sCommand.DummyCycles = 0;

sCommand.NbData = 0;

sCommand.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_RESET);

HAL_QSPI_Command(&hqspi, &sCommand, HAL_QSPI_TIMEOUT_DEFAULT_VALUE);

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_SET);

}



void QSPI_Write(uint32_t address, uint8_t *data, uint32_t size) {

QSPI_CommandTypeDef sCommand;



QSPI_WriteEnable(); // Enable write



sCommand.InstructionMode = QSPI_INSTRUCTION_1_LINE;

sCommand.Instruction = PAGE_PROGRAM_CMD;

sCommand.AddressMode = QSPI_ADDRESS_1_LINE;

sCommand.Address = address;

sCommand.DataMode = QSPI_DATA_4_LINES;

sCommand.NbData = 1;

sCommand.DummyCycles = 0;

sCommand.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_RESET);

HAL_QSPI_Command(&hqspi, &sCommand, HAL_QSPI_TIMEOUT_DEFAULT_VALUE);

for(int i=0; i<size;i++)

{

HAL_QSPI_Transmit(&hqspi, &data[i], HAL_QSPI_TIMEOUT_DEFAULT_VALUE);

printf("sentdata:%0x",data[i]);

}

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_SET);

printf("\n");

}



void QSPI_Read(uint32_t address, uint8_t *data, uint32_t size) {

QSPI_CommandTypeDef sCommand;



sCommand.InstructionMode = QSPI_INSTRUCTION_1_LINE;

sCommand.Instruction = READ_CMD;

sCommand.AddressMode = QSPI_ADDRESS_1_LINE;

sCommand.Address = address;

sCommand.DataMode = QSPI_DATA_4_LINES;

sCommand.NbData = 1;

sCommand.DummyCycles = 0;

sCommand.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_RESET);

HAL_QSPI_Command(&hqspi, &sCommand, HAL_QSPI_TIMEOUT_DEFAULT_VALUE);

for(int i=0; i<size; i++)

{

HAL_QSPI_Receive(&hqspi, &data[i], HAL_QSPI_TIMEOUT_DEFAULT_VALUE);

printf("%0x",data[i]);

}

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_SET);

printf("\n");

}

int main(void)

{

uint8_t dataToWrite[4] = {0x25,0x26,0x27,0x28};





// Write data to EEPROM

QSPI_Write(0x3, dataToWrite, sizeof(dataToWrite));



HAL_Delay(1000);

QSPI_Read(0x3, dataToRead, 4);

}

static void MX_QUADSPI_Init(void)

{



/* USER CODE BEGIN QUADSPI_Init 0 */



/* USER CODE END QUADSPI_Init 0 */



/* USER CODE BEGIN QUADSPI_Init 1 */



/* USER CODE END QUADSPI_Init 1 */

/* QUADSPI parameter configuration*/

hqspi.Instance = QUADSPI;

hqspi.Init.ClockPrescaler = 2;

hqspi.Init.FifoThreshold = 4;

hqspi.Init.SampleShifting = QSPI_SAMPLE_SHIFTING_NONE;

hqspi.Init.FlashSize = 11;

hqspi.Init.ChipSelectHighTime = QSPI_CS_HIGH_TIME_1_CYCLE;

hqspi.Init.ClockMode = QSPI_CLOCK_MODE_0;

hqspi.Init.FlashID = QSPI_FLASH_ID_1;

hqspi.Init.DualFlash = QSPI_DUALFLASH_DISABLE;

if (HAL_QSPI_Init(&hqspi) != HAL_OK)

{

Error_Handler();

}

/* USER CODE BEGIN QUADSPI_Init 2 */



/* USER CODE END QUADSPI_Init 2 */



}

[Andrew Neil]

Welcome to the forum.

Please see How to insert source code.

Also: How to write your question to maximize your chances to find a solution.

You haven't said what STM32 you're using, what board(s), or tool versions.

Are you using the X-CUBE-EEPRMA1 Standard I2C and SPI EEPROM software expansion for STM32Cube:

https://www.st.com/en/embedded-software/x-cube-eeprma1.html

via: https://www.st.com/en/ecosystems/x-nucleo-pgeez1.html#tools-software

and: https://www.st.com/en/memories/m95p32-i.html#tools-software 

[SofLit]

Hello @Gowthami412 and welcome to the community,

First as said by @Andrew Neil you need to use </> to paste your code. I've edited your post.

Second, which STM32 part number are you using?

[Tesla DeLorean]

Where do you call the initialization code?

Why manual PA2 chip select?

Why individual byte transfers?

Clear the sCommand structure as an auto/local variable.

Use a logic analyzer to confirm signaling on bus.

It is not designed to report all errors, just those it can detect at the HAL or peripheral level.

[Gowthami412]

Ok Thank you. I am using STM Nucleo- L496ZGP board.

[Gowthami412]

I am calling initialisation in int main I have initialized all required peripherals in main here I didn't paste. 

1. I tried using without manual CS it didn't work, so I tried adding manual CS then also didn't work.

2. I tried sending all bytes at a time it didn't work, so I tried sending byte by byte.

3. We don't have a logic analyser with support QSPI to decode I tried 

[Tesla DeLorean · Accepted solution]

Then you might need to unpack things manually from the traces.

I would suggest starting with the QSPI in 1-bit interactions, reading the JEDEC ID and SFDP data from it. If you can get that to work you'll need to look at modes and methods to switch to 4-bit operation.

QSPI_CommandTypeDef sCommand = {0}; // strongly advised for large auto/local structures

If correctly wired and functional I'd anticipate PA2:AF10 QUADSPI_BK1_NCS, and multi-byte transmit/receiver to be viable

https://www.st.com/resource/en/datasheet/m95p32-i.pdf

[Gowthami412]

Thank you for your suggestion. I am getting  JEDEC ID  and RDID with QSPI in 1 line mode. But while writing with 4 line mode it is not working.