USART not responding

2 thoughts on “USART not responding

  1. What are the default settings for the USART, I see from litrature that it detects the speed automatically but what should I set for: Databits, Parity, Stop Bits and flow control in hyperterminal?


  2. See AT+IPR and AT+IFC in

    AT Commands Reference Guide:


    If is set to 0, then automatic speed detection is enabled and also
    character format (see +ICF) is set to auto-detect. (default) 



    8N1 is a safe default setting, with no flow control in command mode (but can be set to hardware flow control with special command).