STM32CubeMX, FatFS and SDIO?

[antonius]

Posted on February 20, 2017 at 22:57

Everyone,

How can I use cubeMX for SDcard ? I have generated for MDK but :

this function doesn't work , from UM1721

User manualDeveloping Applications on STM32Cube with FatFs page 21.

:

uint32_t wbytes; /* File write counts */

uint8_t wtext[] = 'text to write logical disk'; /* File write buffer */if(FATFS_LinkDriver(&mynewdisk_Driver, mynewdiskPath) == 0){if(f_mount(&mynewdiskFatFs, (TCHAR const*)mynewdiskPath, 0) == FR_OK){if(f_open(&MyFile, 'STM32.TXT', FA_CREATE_ALWAYS | FA_WRITE) == FR_OK){if(f_write(&MyFile, wtext, sizeof(wtext), (void *)&wbytes) == FR_OK);{f_close(&MyFile);}}}}FATFS_UnLinkDriver(mynewdiskPath);

This variable :

&mynewdisk_Driver doesn't exist, which file is related ?

Thank you

[Tesla DeLorean]

Posted on April 27, 2017 at 02:32

You should be able to enable pull-ups on the pins internally.

The FatFs code will not work if the underlying SDIO code isn't functional.

What pin is being used on the socket's card detect?

[antonius]

Posted on April 27, 2017 at 02:33

Lower the SDIO init speed, there's one file for doing that. I have

posted in here I reckon.

[antonius]

Posted on April 27, 2017 at 02:34

That's right, connect SD Detect as well, it's inside the code PB14 if

I'm not wrong..

[Seton Schroeder]

Posted on April 27, 2017 at 03:06

Yeah, in STM32CubeMX under 'Configuration' -> 'GPIO' a 'Pin Configuration' window comes up. Under the 'SDIO' tab it shows the SDIO pins, which are defaulted as 'Alternate Function Push Pull' for 'GPIO mode', but under 'GPIO Pull-up/Pull-down' it's defaulted as 'No pull-up and no pull down' - I can change this to 'Pull-up' for just the 4 data lines and the CMD line only (so no open-drain external pull-up resistors needed - just internal). By default STM32Cube SDIO settings don't include the SD detect pin; I'll have to do that manually. I'll change the clock speed setting to what you put manually in code; but I'll have to see what this changes in the clock tree as well.

[antonius]

Posted on April 27, 2017 at 04:52

Yes it depends on the main clock from HSE or HSI or internal and divider,

I'm not in windows now so I can not run STM32CubeMX but I'll have a look

on my code, there're some hints on it..

[antonius]

Posted on April 27, 2017 at 05:05

Have a dig on the code at stm32f1xx_II_sdmmc.h ==> STM32F103, for

STM32F4xx, I reckon you need to change the name.

/* SDIO Intialization Frequency (400KHz max) */ ==> check your main

clock and divider on STM32CubeMX

&sharpdefine SDIO_INIT_CLK_DIV ((uint8_t)0xC3)

/* SDIO Data Transfer Frequency */

/* SDIO_CK = SDIOCLK / (SDIO_TRANSFER_CLK_DIV + 2) */

&sharpdefine SDIO_TRANSFER_CLK_DIV ((uint8_t)0x0F) // ==72/(15+2) = 4.23MHz

, work best for my MP3 chip syncronization speed.

[antonius]

Posted on April 27, 2017 at 05:22

Some debug to UART for seeing the response

/=====/

/**

• @brief Initializes the SD card device.

• @retval SD status

*/

uint8_t BSP_SD_Init(void)

{

uint8_t sd_state = MSD_OK;

printf('BSP_SD_Init Function!\n');

/* Check if the SD card is plugged in the slot */

if (BSP_SD_IsDetected() != SD_PRESENT)

{

return MSD_ERROR;

}

/* HAL SD initialization */

sd_state = HAL_SD_Init(&hsd, &SDCardInfo);

&sharpifdef BUS_4BITS

/* Configure SD Bus width */

if (sd_state == MSD_OK)

{

/* Enable wide operation */

if (HAL_SD_WideBusOperation_Config(&hsd, SDIO_BUS_WIDE_4B) != SD_OK)

{

sd_state = MSD_ERROR;

printf('MSD_ERROR\n');

}

else

{

sd_state = MSD_OK;

printf('MSD_OK \n');

}

}

&sharpendif

return sd_state;

}

[antonius]

Posted on April 27, 2017 at 05:23

&sharpdefine __SD_DETECT_GPIO_CLK_ENABLE() __HAL_RCC_GPIOB_CLK_ENABLE()

[Seton Schroeder]

Posted on April 27, 2017 at 20:19

I have 

__HAL_RCC_GPIOB_CLK_ENABLE() defined and enabling the clock on that port. Are you redefining this function 

__SD_DETECT_GPIO_CLK_ENABLE() ? I don't have __SD_DETECT_GPIO_CLK_ENABLE() in my code.

[Seton Schroeder]

Posted on April 27, 2017 at 20:29

This is the list of alternate functions for PB14 in CubeMX. Which one would be the Card Detect for SDIO mode? How would you write this in the code?