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I use threadx-fileX , need to Enable SDMMC1_IRQn make sure its operationHAL_NVIC_SetPriority(SDMMC1_IRQn, 2, 0);HAL_NVIC_EnableIRQ(SDMMC1_IRQn); 

I had the same problem,this is my soultionvoid MX_SDMMC1_SD_Init(void){hsd1.Instance = SDMMC1;hsd1.Init.ClockEdge = SDMMC_CLOCK_EDGE_RISING;hsd1.Init.ClockPowerSave = SDMMC_CLOCK_POWER_SAVE_DISABLE;hsd1.Init.BusWide = SDMMC_BUS_WIDE_4B;hsd1.Init.Hard...