Interface SDMMC using FileX middleware issue in 4-bit bus width mode - STM32
Hi, i'm using STM32U575ZI-Q (in NUCLEO-U575), I want to write and read Fat32 files on SD using SDMMC interface, with FileX middleware. When I set the bus width in 1-bit the app work OK but when I switch the setting to 4-bit buswidth mode the app crashes, the debuging halt in the first reading command after SD initialization (in the HAL_SD_ReadBlocks function, it calls to SDMMC_CmdReadSingleBlock function and when it executes SDMMC_SendCommand the SDMMC bit transfer complete doesn't set)
I'm setting MCU CLK @ 160MHz (AHB & APB at 160MHz too), SDMMC CLK @ 6MHz (source PLL in 96MHz / (2* DIV) with DIV=8).
I repeat, in 1-bit buswidth the code working correctly ! But not in 4-bit mode
On the osciloscope I can see signals on pins D0-D3, so I can verify the 4-bit buswidth is set correctly.
I used a SDHC Standar and a SDHC UHS-1 and the result was the same.
The code includes fx_stm32_sd_driver_glue files.
int main(void)
{
HAL_Init();
SystemClock_Config();
SystemPower_Config();
MX_GPIO_Init();
MX_USART1_UART_Init();
MX_ICACHE_Init();
MX_FileX_Init();
MX_SDMMC1_SD_Init();
HAL_GPIO_WritePin(LED_BLUE_GPIO_Port, LED_BLUE_Pin, GPIO_PIN_SET);
HAL_GPIO_WritePin(LED_GREEN_GPIO_Port, LED_GREEN_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(LED_RED_GPIO_Port, LED_RED_Pin, GPIO_PIN_RESET);
fx_thread_entry(0);
while(1)
{
HAL_GPIO_TogglePin(LED_GREEN_GPIO_Port, LED_GREEN_Pin);
HAL_Delay(400);
}
while (1)
{
}
}
void fx_thread_entry(ULONG thread_input)
{
UINT status;
ULONG bytes_read;
CHAR read_buffer[32];
CHAR buffer_SD[1560];
CHAR data[] = "This is FileX working on STM32 \0";
uint32_t a = 0;
for (a = 0; a < 1560; ++a) {
buffer_SD[a] = 'G';
}
buffer_SD[0] = 'd';
buffer_SD[1] = 'i';
buffer_SD[2] = 'v';
buffer_SD[3] = '2';
buffer_SD[1559] = '!';
/* Open the SD disk driver. */
status = fx_media_open(&sdio_disk, "STM32_SDIO_DISK", fx_stm32_sd_driver, 0,(VOID *) media_memory, sizeof(media_memory));
/* Check the media open status. */
if (status != FX_SUCCESS)
{
Error_Handler();
}
/* Create a file called STM32.TXT in the root directory. */
status = fx_file_create(&sdio_disk, "STM32.TXT");
/* Check the create status. */
if (status != FX_SUCCESS)
{
/* Check for an already created status. This is expected on the
second pass of this loop! */
if (status != FX_ALREADY_CREATED)
{
/* Create error, call error handler. */
Error_Handler();
}
}
/* Open the test file. */
status = fx_file_open(&sdio_disk, &fx_file, "STM32.TXT", FX_OPEN_FOR_WRITE);
/* Check the file open status. */
if (status != FX_SUCCESS)
{
/* Error opening file, call error handler. */
Error_Handler();
}
/* Seek to the beginning of the test file. */
status = fx_file_seek(&fx_file, 0);
/* Check the file seek status. */
if (status != FX_SUCCESS)
{
/* Error performing file seek, call error handler. */
Error_Handler();
}
LED_BLUE_GPIO_Port->BRR |= LED_BLUE_Pin;
/* Write a string to the test file. */
status = fx_file_write(&fx_file, buffer_SD, sizeof(buffer_SD));
/* Check the file write status. */
if (status != FX_SUCCESS)
{
/* Error writing to a file, call error handler. */
Error_Handler();
}
LED_BLUE_GPIO_Port->BSRR |= LED_BLUE_Pin;
/* Close the test file. */
status = fx_file_close(&fx_file);
/* Check the file close status. */
if (status != FX_SUCCESS)
{
/* Error closing the file, call error handler. */
Error_Handler();
}
status = fx_media_flush(&sdio_disk);
/* Check the media flush status. */
if (status != FX_SUCCESS)
{
/* Error closing the file, call error handler. */
Error_Handler();
}
/* Open the test file. */
status = fx_file_open(&sdio_disk, &fx_file, "STM32.TXT", FX_OPEN_FOR_READ);
/* Check the file open status. */
if (status != FX_SUCCESS)
{
/* Error opening file, call error handler. */
Error_Handler();
}
/* Seek to the beginning of the test file. */
status = fx_file_seek(&fx_file, 0);
/* Check the file seek status. */
if (status != FX_SUCCESS)
{
/* Error performing file seek, call error handler. */
Error_Handler();
}
/* Read the first 28 bytes of the test file. */
status = fx_file_read(&fx_file, read_buffer, sizeof(data), &bytes_read);
/* Check the file read status. */
if ((status != FX_SUCCESS) || (bytes_read != sizeof(data)))
{
/* Error reading file, call error handler. */
Error_Handler();
}
/* Close the test file. */
status = fx_file_close(&fx_file);
/* Check the file close status. */
if (status != FX_SUCCESS)
{
/* Error closing the file, call error handler. */
Error_Handler();
}
/* Close the media. */
status = fx_media_close(&sdio_disk);
/* Check the media close status. */
if (status != FX_SUCCESS)
{
/* Error closing the media, call error handler. */
Error_Handler();
}
}
I guess the IDMA is not working properly but I'am not sure. If anyone can help me i appreciate it !