STM32CubeF4, Require SDIO Api's to perform CMD0,CMD3,CMD5,CMD7,CMD52,CMD53

[ishmeetsinghis]

Posted on July 17, 2014 at 06:32

Hi,

I am using STM32Cube FW F4 v1.3.0, using STM32F401 Nucleo

I am using the SDIO evaluation example provided in stm32f4x9i_eval_sd.c 

It do contains API for sendCommand, but I require some API's to perform CMD0, CMD3, CMD7, CMD52, CMD53 commands.

Please excuse me, I am very new to SDIO protocol.

If anyone has an example code or can guide me to right path, much appreciable.

#stm32f4 #sdio #stm32f401

[Montassar BEN ROMDHANE_O]

Posted on July 17, 2014 at 12:18

Hi singh.ishmeet,

Please take a look at the F4 HAL SD driver (stm32f4xx_hal_sd.c file)

It implements the SD card initialization and identification process using the right commands (CMD0...)

Thank you for your interest in our STM32Cube solution.

With regards.

[ishmeetsinghis]

Posted on July 18, 2014 at 06:55

Hi Heisenberg,

Firstly thanks for the reply, Really appreciate it.

Please can you provide some code reference or direction of using CMD53 and data transfer on SDIO. 

I looked at the F4 HAL SD driver (stm32f4xx_hal_sd.c file), but it does not contain any API or reference to CMD53. I require an API, or some direction to implement CMD53 in SDIO. 

Thanks

[Montassar BEN ROMDHANE_O]

Posted on July 18, 2014 at 11:33

Hi singh.ishmeet,

The CMD53 is not used within the stm32f4xx_hal_sd.c file, since it's an optional and SD I/O card only command, reserved for security specification.

You can find the SD_CMD_SDIO_RW_EXTENDED define under the stm32f4xx_hal_sd.h file. You can use the SDIO_CmdInitTypeDef structure and SDIO_SendCommand() function to send this command.

Just one remark, the SDIO_APP_CMD command should be sent before sending any SD Card specific command.

With regards.

[ishmeetsinghis]

Posted on July 18, 2014 at 12:59

Hi Heisenberg,

Thank you for the reply,

Please can you also tell about the data write in blocks after CMD53. I have understood what you have just told me about how to send command, and using it I am able to send CMD53. 

But since CMD53 is a data command, so please tell how to write data blocks after using CMD 53.

Thanks

[Montassar BEN ROMDHANE_O]

Posted on July 18, 2014 at 14:58

Hi singh.ishmeet,

You can refer to paragraph 5.3. IO_RW_EXTENDED Command (CMD53) under the SD Specifications / SDIO Simplified Specification, following this link: 

http://goo.gl/PGNm63

With regards.