1 Reply Latest reply on Aug 6, 2012 3:19 AM by arvi

    muxing multiple CapSense inputs together

    doug.burrell

       Hi,

         

      I'm using a CY8C20647S device and I have several configurations of CapSense pins I am using... such as all separate buttons, vertical sliders and horizontal sliders. I also want to add another config that would mux all the CapSense pins together as one proximity type button. So far I can't seem to find out how to do this... but I believe it is possible as someone mentioned this to me previously, unfortunately I can't get in touch with this person!

         

      Thanks,

         

      Doug

        • 1. Re: muxing multiple CapSense inputs together
          arvi

          I'm not a CapSense expert, but I think you should be able to do this by collectively connecting multiple pins to the Analog Mux Bus (AMUX). This will let you short the pins internally.

             

           

             

          Use the MUX_CRx Registers to short pins to the AMUX. After you should read the Rawcount just like you would do for a normal sensor. The difference now will be that you'll have increased sensitivity.

             

           

             

          Hope this helped. If you have any doubts let me know.

             

           

             

          -Arvind