Hi I'm using STM32cubeIDE and I use two DMA channels,DMA1_Channel1 is for ADC1 and DAM1_Channel5 is for USART1_rx.USART1 is using for RS485 communication. HAL_ADC_Start_DMA(&hadc1, &adcVal[0], 8); HAL_UART_Receive_DMA(&huart1, &rxBuffer[0], DMA_RX_BU...