3 Replies Latest reply on Jun 24, 2015 10:20 AM by user_1377889

    Schematic review for BTLE

    andrea.corsi

       Dear Sirs,

         

      I'll be very grateful if you could review my schematic for the communication between the host uC and the BTLE module CYBLE-022001-00: I wasn't be able to find the related documentation while in a detailed AN for microchip BTLE module RN4020 I've found the necessary signal lines.

         

      The purpose of the application is to communicate with a heart rate chest strap and a smartphone. I think to an UART communication between the host uC and the BTLE module.

         

      Moreover I'd like to use 3 leds for connection status.

         

      Thank you in advance

         

      Andrea

        • 1. Re: Schematic review for BTLE
          user_1377889

          Since you did not provide us with the complete project there is a bit of guessing to answer your question.

             

          First: The 4200 BLE  UART (SCB) does not provide hardware handshake using CTS and RTS. You will need to use the UDB-based version (v 2.50) to perform that.

             

           

             

          We cannot check if your pin-assignments are ok, so best will be to post your complete project, so that we all can have a look at all of your settings To do so, use
          Creator->File->Create Workspace Bundle (minimal)
          and attach the resulting file.



          Bob
           

          • 2. Re: Schematic review for BTLE
            andrea.corsi

             Please,

               

            find in attachment the project. It seems that the RTS and CTS are managed!

               

            BR

               

            Andrea

            • 3. Re: Schematic review for BTLE
              user_1377889

              Andrea

                 

              That looks good from the PSoC side. Check the following:

                 

              You have an interrupt firing 1000 times per second, that is much, do you really need that frequency?

                 

              There already is a 32,768Hz clock, you may save another clock running at 32.000Hz (saving some power)

                 

              Hardware handshake looks OK.

                 

              Have you already got an evaluation board to check your design?

                 

               

                 

              Bob