I am using STM32L476JEY MCU. SDMMC works fine at 4 MHz clock speed with interrupt enabled and DMA disabled. However when I use DMA to read a block it generates Rx overrun error. When I checked the output buffer it read 4 bytes instead of 512 bytes.I ...

I am using NUCLEO STM32L4R5ZI. I tried to access the boot mode using the following command HAL_FLASH_Unlock(); while(FLASH->SR & FLASH_SR_BSY) ; HAL_FLASH_OB_Unlock(); while(FLASH->SR & FLASH_SR_BSY) ; FLASH->OPTR &= ~(FLASH_OPTR_n...