3 Replies Latest reply on Mar 17, 2016 9:22 AM by mao.xguo

    PSOC4 CSD module issue

    mao.xguo

      How to setup the sense clock divider and mudulator clock divider?

         

      How to measure the capacity value of capacitor sensor by CSD API?

        • 1. Re: PSOC4 CSD module issue
          rahb

          Hello,

             

          I have attached the snap shot, which explains where to set sense and modulator clock divider value. Kindly refer the attachment. Double click the CSD component, go to "scan order" tab, you may find the sense and modulator clock divider value. 

             

          To measure the absolute capacitance of Capsense pin, CapSense_GetSensorCp() API is used. 

             

          Thanks

             

          Ramesh B

          • 2. Re: PSOC4 CSD module issue
            mao.xguo

            Hello Ramesh,

               

              Thanks for your prompt reply. Sorry for that I didn't speak clear question. I knew how to setup the scan speed.

               

            After I use CapSense_GetSensorCp() API to get the value of capacitive sensor, how to decide the scan speed.

               

            In CSD datasheet, the Cp of sensor is a scope from 10pF to 50pF.  For higher Cp, do we setup the low scan speed to keep the

               

            integrity of charge and discharge? I can observe the wave by oscilloscope.  Do you have a table to show this?   

            • 3. Re: PSOC4 CSD module issue
              mao.xguo

              Can some guy respond this topic?