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Capacitive touch using only ADC pic12f752

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PIC_fann
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2019/06/27 05:16:59 (permalink)
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Capacitive touch using only ADC pic12f752

Hello everybody,
I developed an application for capacitive touch using CVD method so it works fine.
Now i have to measure SNR (signal to noise ration) based on AN1334. but i do not have any communication way on this microcontroller.
I tried using oscilloscope to view analog signal on sensor pin, but it is impossible to identify the noise.
the best method is to compare average value in two states: pressed and unpressed state of the sensor. but how?
 
Have you any idea please?
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    pcbbc
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    Re: Capacitive touch using only ADC pic12f752 2019/06/27 05:35:56 (permalink)
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    PIC_fannHave you any idea please?

    Bitbang yourself a UART on a spare pin.
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    PIC_fann
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    Re: Capacitive touch using only ADC pic12f752 2019/06/27 05:39:24 (permalink)
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    I do not have any available pin...
    Can i retrieve the info from memory adress?
    #3
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