12 Replies Latest reply on Oct 9, 2013 9:07 AM by junichi.hiraoka

    UART signal does not received

    junichi.hiraoka

      Hello Friends, 

         

      You are always in busy with Creator3.0, I presume.

         

      Anyway, listen to my trouble of PSoC1.

         

        

         

      UART signal that sent from PSoC1(8C24233) to (FTK3270/MTF Board 8C21434) was not received.

         

      receive interrupt has not occur.

         

      UART-Tx signal was lift up 1.7V (look wave1)

         

        

         

      Sender is strong drive and receiver is High-Z input.

         

      Even if resistive pull-down and pre-buffered by DigBuf 

         

      was not for help it.

         

        

         

      For an experiment, No load output (look wave2)

         

      It seems properly.

         

      Any suggestion in owe you.