The documentation for HAL_ADCEx_MultiModeStart_DMA clearly states that the length parameter is in bytes. /** * @brief Enable ADC, start MultiMode conversion and transfer regular results through DMA. * @note Multimode must have been previously ...

I'm using the USART on my STM32G474 in FIFO mode with LL-libraries. The datasheet says:" However the RXFIFO default width is 12 bits. This is due to the fact that the receiver does not only store the data in the FIFO, but also the error flags associa...