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PSoC™ 4

wangyuanfan
Level 3
10 replies posted 10 questions asked 10 sign-ins
Level 3
‎Dec 12, 2021 07:59 PM

short two GPIO Pin to simulate short defect. but it doesn't work.

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Hi ! I'm experimenting with CY8CKIT-149.

I'm using  CSD sensing method or CSX  sensing method to measure the capacitance value on touchpad.

I shorted two GPIO Pin to simulate short defect. In this case, the two shorted GPIO Pins theoretically indicate double the normal value.

But, it was observed 40 times as large as the normal value and constant at 84537 fF measured by the function CapSense_GetSensorCapacitance().

I don't know how to observe the double value.

Please help me.

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Hari
Moderator
Moderator 750 replies posted 500 replies posted 250 solutions authored
Moderator
‎Dec 13, 2021 12:21 AM

Re: short two GPIO Pin to simulate short defect. but it doesn't work.

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Hi @wangyuanfan 

 

This query is already answered in this thread - https://community.infineon.com/t5/PSoC-4/what-happen-when-the-GPIO-Pins-are-shorted-in-SCD-sensing-m...


Best regards, 
Hari

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