7.2 Touch Surface Sensor Configuration
The QT2 Xplained Pro 2D surface is configured with the Atmel START for one-finger gesture detection. The various configuration parameters for sensors are shown in the table below:
| Parameter | Value |
|---|---|
| Sensor type | Mutual capacitance |
| Touch measurement period | 20 ms |
| Analog gain | 1 |
| Digital gain | 2 |
| Charge share delay | 2 |
| Filter level | 16 |
| Sensor threshold level | 25 |
| Surface resolution (Bits) | 7 bits |