9 Replies Latest reply on Jun 5, 2014 7:41 AM by user_366036678

    Constantly output character from UART

    user_366036678

      Hello,

         

       

         

      I'm thinking of how to constantly output a character from the UART.

         

       

         

      For example, the character 'h' will be outputted from the UART constantly.

         

       

         

      The challenge is, I want to do it without calling a function like printf (ie. I don't want to use the CPU) AND without using the DMA.

         

       

         

      Is that even possible? Or am I being too imaginative?

         

       

         

      I know that the TX reg for the UART is a FIFO type, so I don't think I'd be able to hold data in there permanently.

         

       

         

      Thanks,