Conflict between ADC and Capsense CSD(Psoc4)

[Alessio]

We are using the Capsense CSD together with the Analog Mux.

For the capsense we are using 6 touch keys, and 5 ADC inputs for the multiplexer. We have a conflict between Analog Mux and CapSense CSD that causes the baseline to vary as a function of the ADC inputs.

We tried to manage them at different times,  waiting for the end of the conversion of each procedure,  but we couldn't solve the problem.

Is there any way to fix this without designing a new layout?

Attached screenshot of the Topdesign.cysch file.

best regards

Alessio

[Vasanth]

Hi Alessio,

Could you share the analog routing tab image after building the project ? (CYDWR -> Analog ). I would like to the know the capsesne pins and ADC input pins and how they are being routed in the design.

Best Regards,
Vasanth

[Alessio]

Hi Vasanth,

thank you for your reply.

Please find in attachment files you requested.

Hoping these files could help to fix our problem, receive our best regards.

Alessio 

[Vasanth · Accepted solution]

Hi Alessio,

Which version of the PSoC Creator are you using ? Will you be able share your project file also ? I doubt if there is a reuse of the same Amuxbus, which should not happen. In PSoC Creator  you can go to File -> Create workspace bundle and select minimal and attach the file. Now in futuredesign it might be always advised to select the pins according to this appnote.

Best Regards,
Vasanth