STM32L4 support eMMC

Posted on June 13, 2018 at 15:57

How to make my STM32L4 to support eMMC device ? I run the code cube_FW_L4_V1.12.0 on my board then it failed on the cmd55 at SD_PowerON stage.

The eMMC chip is the 'KingSton eMMC04G-M627 eMMC' 4GB.

Any idea . Thanks

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Guru

Posted on June 13, 2018 at 16:02

>>How to make my STM32L4 to support eMMC device ?

I'm accepting reasonable offers for my time/expertise.

Define the specific model of L4 you are using, and the connectivity of the SDMMC pins, and a USART you are using for debug output/telemetry.

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Guru

Posted on July 05, 2018 at 23:07

I have these board from

Przenioslo.Lukasz

? working on NUCLEO-L4R5ZI and NUCLEO-L496ZG boards

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Visitor II

Hi,

I'm currently working on the same boards and I was looking forward to make eMMC work with it.

Do you manage to make it work ?

femaAuthor

Associate III

Posted on June 13, 2018 at 16:44

I am using the the STM32L4R5QG chip and connect the eMMC chip to the SDMMC1 same as the STML4-DISCO board.

The CMD8 return me error 4 the (CommandTimeout) so it goes to define the 'hsd->SdCard.CardVersion = CARD_V1_X '

And then CMD55 also return error 4 (CommandTimeOut) then it return 'HAL_SD_ERROR_UNSUPPORTED_FEATURE' .

Guru

Posted on June 13, 2018 at 17:43

Which DISCO? STM32L4R9I-DISCO?

Which USART and pins? Support for SWV via PB3?

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