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
>>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.
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" .
Which DISCO? STM32L4R9I-DISCO?
Which USART and pins? Support for SWV via PB3?
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