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Hello everyone,
this case of mine is just to a feasibility / pre-design stage, anyway:
I have a capacitive application involving a trackpad and some single capacitive buttons, to use in a harsh environment.
In order to reduce the population of pins, and to have a smaller tail in the sensing FPC, I was minding to use a mutual-capacitive configuration.
As far as I know the mutual-capacitance is less sensitive to noise with respect to self-capacitance.
My wonder is: in order to get a robust system, is it possible to use the same CSD component to scan the keys with the self-capacitance technique (I will sense the Rows and the Columns, of course) and then switch to mutual-capacitance to identify where the touch is?
And, over all, does this make sense?
Thank you very much in advance
GianLuca
Solved! Go to Solution.
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Hi GianLuca,
Yes this is possible. Instead of assigning a new pin (dedicated) to the CSD button you have to assign the CSX pin to it in the CapSense config. Or vice versa.
There are areas where it makes sense to combine both technologies and use both of their strength.
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Hi GianLuca,
Yes this is possible. Instead of assigning a new pin (dedicated) to the CSD button you have to assign the CSX pin to it in the CapSense config. Or vice versa.
There are areas where it makes sense to combine both technologies and use both of their strength.
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Oh ok, I see.
Thank you very much aceh!
This solves 🙂
GianLuca