On 2023. 06. 08. 4:20, Sherry Sun wrote: > Hi Robert, > I understand your concern, fortunately, LPUART IP provides the Receiver Idle Empty function, which can avoid the receive data being trapped in the RX FIFO. For more details you can check my patch below. > Hi, Although I can see RXIDEN in the i.MX8 RM, it's not in LS1028A's LPUART FIFO register. Seems not all LPUART IPs have this. Best regards, Robert
