ATAVRQTOUCHX Atmel, ATAVRQTOUCHX Datasheet - Page 122

• Manufacturer Part Number: ATAVRQTOUCHX
• Description: BOARD EVAL CAPACITIVE TOUCH
• Manufacturer: Atmel
• Series: QTouch™r

Specifications of ATAVRQTOUCHX

• Sensor Type: Touch, Capacitive
• Sensing Range: 1 Slider, 1 Wheel, 2 Buttons
• Interface: USB
• Voltage - Supply: 5V, USB
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: AT90USB1287, ATxmega128A1
• Silicon Manufacturer: Atmel
• Silicon Family Name: ATxmega
• Kit Contents: Board
• Svhc: No SVHC (15-Dec-2010)
• Core Architecture: AVR
• Core Sub-architecture: AVR19
• Kit Features: One Slider, One Wheel And 2
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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Using the init_clock() in main.c and clock.c files,
Set the CAT_CLK Clock to appropriate value.
Using the touch_config_at32uc3l.h configuration file,
Set DEF_TOUCH_QTOUCH_GRP_A = 1, if QTouch Group A is to be used.
Set DEF_TOUCH_QTOUCH_GRP_B = 1, if QTouch Group B is to be used.
Set all QTA_xx (if Group A is enabled) to appropriate values.
Set all QTB_xx (if Group B is enabled) to appropriate values.
Set all TOUCH_xx macros to appropriate values.
(This includes 1 peripheral DMA Channels required for QTouch operation.)
In the main.c file,
Set the desired measurement_period_ms for Touch measurement.
The API Sequence below must be repeated for Group A and Group B when both the
Groups are used at the same time. The first argument to the API
TOUCH_QT_GRP_A or TOUCH_QT_GRP_B distinguishes between Group A and
Group B operations. Separate Filter and Measurement complete callback functions
must be provided for Group A and Group B Sensors.
Configure multiple
QTouch sensors
Call in loop
time_to_
measure_touch
acquisition(NORMAL_ACQ_MODE)
Figure 43 QTouch method API Flow diagram
touch_qt_sensors_calibrate()
touch_qt_sensors_config()
touch_event_dispatcher()
touch_qt_sensors_start_
touch_qt_sensors_init()
Host Application code
measured data and Touch Status
measure_complete_callback(),
filter_callback(), if enabled
8207J-AT42-02/11