ATAVRQTOUCHX Atmel, ATAVRQTOUCHX Datasheet - Page 30

• 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

NOTE:
5.6.5.6
This function performs a capacitive measurement on all enabled sensors. The measured signals
for each sensor are then processed to check for user touches, releases, changes in rotor angle
and changes in slider position.
unit16_t qt_measure_sensors( uint16_t current_time_ms
Arguments
current_time_ms
Return
Value
uint16_t
NOTE:
5.6.5.7
This function forces a recalibration of all enabled sensors.
30
•
•
•
All
qt_enable_slider ) before calling this function.
This functions initializes all the configured sensors, performs calibration.
All sensors must be configured (using qt_enable_key or qt_enable_rotor or
qt_enable_slider) and initialized by calling qt_init_sensing before calling this function.
Comment
Returns the status of the Library as a combination of the following bit fields.
Return value
QTLIB_NO_ACTIVITY
QTLIB_IN_DETECT
QTLIB_STATUS_CHANGE
QTLIB_ROTOR_SLIDER_POS_CHANGE
QTLIB_CHANNEL_REF_CHANGE
QTLIB_BURST_AGAIN
QTLIB_RESOLVE_CAL
QTLIB_RESOLVE_FILTERIN
QTLIB_RESOLVE_DI
QTLIB_RESOLVE_POS_RECAL
qt_measure_sensors
qt_calibrate_sensing
sensors
Type
uint16
must
Comment
The current time in milliseconds
be
configured
(using
Bit
definition
0x0000
0x0001
0x0002
0x0004
0x0008
0x0100
0x0200
0x0400
0x0800
0x1000
qt_enable_key,
At least one rotor/slider has changed
At least one reference value has
Comments
No activity detected on any of the
sensors
At least one sensor is in detect
At least one sensor has changed
ON/OFF state since the last call to
qt_measure_sensor()
position
qt_measure_sensors()
changed
qt_measure_sensors()
Flag to indicate Multiple measurements
needed.
Multiple
resolve
qt_measure_sensors( ) once again.
Multiple
resolve
qt_measure_sensors( ) once again.
Multiple
resolve
qt_measure_sensors( ) once again.
Multiple
resolve
qt_measure_sensors( ) once again.
positive
measurements
measurements
measurements
measurements
since
detect
since
)
8207J-AT42-02/11
calibration.
qt_enable_rotor
filtering.
the
recalibration.
integration.
last
last
needed
needed
needed
needed
call
call
Call
Call
Call
Call
or
to
to
to
to
to
to