| To perform the sensing the following steps are important: |
|---|
 Drive a secondary channel to Vdd an das digital output |
| Point the ADC tot he secondary pin with the Vdd-Level (charges the internal capacitor to Vdd) |
| Ground the sensor line |
| Set the sensor line as input |
| Point the ADC to sensor channel (the internal capacitor discharges) |
| Begin the ADC conversion |
| And at least evaluate the digital value and compare it with the „pressed value“ |