Configuring The Kit/Sensors - Atmel AVR8015 Application Note

4.6.2 Configuring the kit/sensors

32185A-AVR-01/12
QTouch Kit when it is connected to the PC. Using this information, the image of
the kit will be updated.
As explained during Task 1, sensors displayed in a light grey color are inactive,
and sensors displayed in a light brown color are active sensors. Whenever a
touch to an active sensor is detected a filled circle indicating where the user
touches the sensor is drawn. The filled circle increases when the delta
increases, and changes color when the threshold is reached.
When a touch to the active sensor is no longer detected, the color of the sensor
will go back to light brown again. The user shall be able to edit sensor
configuration options (non-design options) and kit configuration options (non-
design options) in Analysis mode.
Adjacent Key Suppression
1. Open Kit/Sensor Configuration window, select Button0 and configure the AKS
Group as AKS_GROUP_1.
2. Similarly, configure all the sensors as AKS_GROUP_1.
3. Now, if you touch more than 1 button at the same time, only one is detected.
In designs where the sensors are close together or set for high sensitivity,
multiple sensors might report detect simultaneously if touch is near them. To
allow applications to determine the intended single touch, the touch library
provides the user the ability to configure a certain number of sensors in an AKS
group.
When a group of sensors are in the same AKS group, only the first, strongest
sensor will report detection. The sensor reporting detection will continue to
report detection even if another sensor's delta becomes stronger. The sensor
stays in detect until its delta falls below its detection threshold, and then, if any
more sensors in the AKS group are still in detect, the strongest will report
detection.
And so at any given time, only one sensor from each AKS group will be reported
to be in detect.
Figure 4-28. Modifying kit/sensor configuration.
Atmel AVR8015
®
(AKS).
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