About j.kouadio

j.kouadio · 2022-04-12

Hi,I'm working on SDMMC on STM32U5 nucleo board.Everything works fine for 1 and 4 bit mode.But, in 8 bit mode I can write data with HAL_MMC_WriteBlocks but when I try to read back with HAL_MMC_ReadBlocks, it always gets SDMMC_FLAG_DCRCFAIL.Have you e...

j.kouadio · 2022-03-11

I am currently programming an eMMC(SDMMC) card with an STM32U575 microcontroller.In 4 bit mode it works perfectly, but in 8 bit mode, I have a CRC error (HAL_MMC_ERROR_DATA_CRC_FAIL) in the HAL_MMC_ReadBlocks function called by fx_media_open.NB: I ca...

j.kouadio · 2021-12-17

j.kouadio · 2022-05-12

Yes, I'm trying to understand what's wrong. Write function works in 8 bit mode but read function does not

j.kouadio · 2022-04-15

And with greenliant EVB, people you worked with never met CRC failed problem in 8 bit mode for HAL_MMC_ReadBlocks. That's surprising.

j.kouadio · 2022-04-14

Hi @Community member Which eMMC did you use, have you found the evaluation board on internet. Could you please send me the link?

j.kouadio · 2022-04-12

I found the solution 3 months ago, sorry for the delay, if you meet the same error, you just have to replace MMC_HIGH_VOLTAGE_RANGE by eMMC_DUAL_VOLTAGE_RANGE for #define MMC_VOLTAGE_RANGE MMC_HIGH_VOLTAGE_RANGE.Thanks

j.kouadio · 2022-03-14

Hi @Community member I tried it, it doesn't change anything. It is the same error.

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Have you ever met a problem with HAL_MMC_ReadBlocks?

any idea about SDMMC CRC error with HAL_MMC_ReadBlocks function?

Hi, I'm trying to program eMMC card with STM32U575 but the init fonction MX_SDMMC1_MMC_Init() failes in SDMMC_GetCmdResp3(SDMMC_TypeDef *SDMMCx) and return SDMMC_ERROR_CMD_RSP_TIMEOUT. Any idea?

Re: any idea about SDMMC CRC error with HAL_MMC_ReadBlocks function?

Re: any idea about SDMMC CRC error with HAL_MMC_ReadBlocks function?

Re: any idea about SDMMC CRC error with HAL_MMC_ReadBlocks function?

Re: Hi, I'm trying to program eMMC card with STM32U575 but the init fonction MX_SDMMC1_MMC_Init() failes in SDMMC_GetCmdResp3(SDMMC_TypeDef *SDMMCx) and return SDMMC_ERROR_CMD_RSP_TIMEOUT. Any idea?

Re: any idea about SDMMC CRC error with HAL_MMC_ReadBlocks function?