1 2 Previous Next 15 Replies Latest reply on Nov 2, 2014 5:10 AM by user_420283366

    diff sensitivity for sensors

    user_420283366

      Hey guys I'm working on my project with capsense & in that I wish to have different sensitivity for each snsor I use. Like I mean

         
            
      1. BTN1 can sense my finger without phisical touch (1mm/2mm away from BTN)
      2.     
      3. BTN2 can sense my fingerwhen I just touch it
      4.     
      5. BTN3 can sense my finger after the delay of 1sec & likwise.
      6.    
         

      Also I wish to try n give some sensors as a pre-requisite for another sensors, can I do that?

         
            
      1. untill my BTN1 is ON BTN3 will not be turned ON & likewise.
      2.    
         

      If I can then how is that? Thanks.

         

      Regards-

         

      Amit

        • 1. Re: diff sensitivity for sensors
          user_1377889

          Proximity sensors fpr PSoC1 are explained here: www.cypress.com/

             

           

             

          Bob

          • 2. Re: diff sensitivity for sensors
            user_14586677

            In Designer, Help, Docmentation, there is a section for Capsense,

               

            both general and device specific.

               

             

               

            In these discussed are the arrays for counts, baseline, etc.. that can be called/

               

            modified to affect detection parameters on a per sensor basis.

               

             

               

            Regards, Dana.

            • 3. Re: diff sensitivity for sensors
              user_420283366

              Thanks Dana & Bob,

                 

              surely will go through it n see what I will get out of it.

                 

              Regards--

                 

              Amit

              • 4. Re: diff sensitivity for sensors
                user_420283366

                Hi guys, Good morning

                   

                I want to know does the size & shape of the buttons affect the sensing opration?

                   

                I wish to use the slider shaped(as per std. board or a rectangle of about 1/3rd size of normal square buttons), can I do that?

                   

                if I do so what parameters I need to change.

                   

                Thanks & Regards-

                   

                Amit

                • 6. Re: diff sensitivity for sensors
                  user_420283366

                  Thanks Bob, I will go through the links.

                     

                  Regards-

                     

                  Amit

                  • 7. Re: diff sensitivity for sensors
                    user_420283366

                    Hello Bob, its a nice feeling to be back on PSoC n with the supporties like you, Dana & all.

                       

                    I have gone through the links you suggested me for understanding the sensitivity of the sensors with different overlays & the working environment. I am able to get that to a good hight.

                       

                    According to the notes reffered, for the variable sensitivity I need to cosider the parameters of the CSA_EMC, the overlay material & its thickness & the shape & size of the sensors.

                       

                    Apart from that I wish to ask you that, is there anything in the programming that we can do to modify the sensitivity of the perticular sensor.

                       

                    Get it clear, if I do the changes in the CSA_EMC parameters or in the overlays; those will be applicable to all of the sensors & changing the size of the sensors individually will not be a proper solution.

                       

                    So suggest me on changing the sensitivity of the individual sensors.

                       

                    Thanks & Regards-

                       

                    Amit

                    • 8. Re: diff sensitivity for sensors
                      user_1377889

                      Afaik you may change the sensitivity of buttons separately. But I am mostly concerned with PSoC4  and 5 CapSenses, not with PSoC1

                         

                       

                         

                      Bob

                      • 9. Re: diff sensitivity for sensors
                        user_14586677

                        Looking at APIs I do not see any to fix individual button

                           

                        sensitivity. Clearly you can alter an individual buttons

                           

                        layout to effect sensitivity, but in code I do not see any

                           

                        possibility to do this. Unless you use from one scan to

                           

                        the next different tuning (the scan covers all buttons

                           

                        with one sensitivity).

                           

                         

                           

                        Given you do not want alter layout you might want to file a CASE -

                           

                         

                           

                            

                           

                                  

                           

                        To create a technical or issue case at Cypress -

                           

                         

                           

                        www.cypress.com

                           

                        “Support”

                           

                        “Technical Support”

                           

                        “Create a Case”

                           

                         

                           

                        You have to be registered on Cypress web site first.

                           

                         

                           

                        Regards, Dana.

                        • 10. Re: diff sensitivity for sensors
                          user_420283366

                          Thanks Bob, at least I got confirmation about the assigning variable sensitivity to individual sensors.

                             

                          I will look deeper & see what I can get on it.

                             

                          Thanks & Regards-

                             

                          Amit

                          • 11. Re: diff sensitivity for sensors
                            user_420283366

                            Thanks Dana, at l'm confirmed that I'm going in a possible facts with Capsense. So I can change the sensitivity of sensors individually & for more details I will create a case & see what the Cypress get me on it.

                               

                            Also see if you can find anything about it like App Note or something helpful.

                               

                            Thnaks & Regards-

                               

                            Amit

                            • 12. Re: diff sensitivity for sensors
                              user_14586677

                              In Smartsense2x you are allowed to set individual button sensitivity -

                                 

                               

                                 

                               

                                 

                               

                                 

                               

                                 

                              Also there are arrays that can be used to control parameters -

                                 

                               

                                 

                               

                                 
                                  

                              Finger Threshold Table

                                  
                                   

                              The Finger Threshold table defines the normalized finger threshold for each sensor. A typical example for a one-button and five-sensor slider is shown here.

                                   
                              SmartSense2X_Finger_Threshold_Table:
                                   
                              _ SmartSense2X_Finger_Threshold_Table:
                                   
                              db 255; Buttons
                                   
                              db 1, 1, 1, 1, 1; Sliders
                                  
                                 
                                 
                                       

                              Sensitivity Level Table

                                  
                                   

                              The Sensitivity Level Table defines the sensor sensitivity for each sensor. A typical example for a one-button and five-sensor slider is shown here.

                                   
                              SmartSense2X_Sensitivity_Level_Table:
                                   
                              _ SmartSense2X_Sensitivity_Level_Table:
                                   
                              db 2; Buttons
                                   
                              db 2, 2, 2, 2, 2; Sliders
                                  
                                 
                              • 13. Re: diff sensitivity for sensors
                                user_420283366

                                Hi Dana, thanks for the suggestion.

                                   

                                I'm using the CY8C20x34 family for my project.

                                   

                                I think it does not support the Smartsense, does it ?

                                   

                                If it doesn't, I have to change the Controller; thats the only choice?

                                   

                                Thanks & Regards-

                                   

                                Amit

                                • 14. Re: diff sensitivity for sensors
                                  user_14586677

                                  I concur, does not seem to be listed as a supported family

                                     

                                  in module datasheet or Capsense user guide.

                                     

                                   

                                     

                                  Maybe file a CASE to see if its planned, and include you question

                                     

                                  about SW controlled sensitivity if it winds up not being supported.

                                     

                                   

                                     

                                      

                                     

                                            

                                     

                                  To create a technical case at Cypress -

                                     

                                   

                                     

                                  www.cypress.com

                                     

                                  “Support”

                                     

                                  “Technical Support”

                                     

                                  “Create a Case”

                                     

                                   

                                     

                                  You have to be registered on Cypress web site first.

                                     

                                   

                                     

                                  Regards, Dana.

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