ATAVRQTOUCHX Atmel, ATAVRQTOUCHX Datasheet - Page 155

• 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

6.3.18 Autonomous touch API
This section lists the functions that are specific to Autonomous QTouch sensor.
6.3.18.1.1 touch_at_sensor_init
Arguments
6.3.17.2.11 touch_qt_get_libinfo
Arguments
touch_qt_grp
p_
touch_info
6.3.17.2.12 touch_qt_sensor_get_delta
Arguments
sensor_id
p_delta
p_touch_config
•
•
•
•
•
•
Note: Care must be taken such that a valid Sensor ID corresponding to a QTouch Group
A sensor or QTouch Group B Sensor is provided.
touch_ret_t touch_qt_get_libinfo(touch_qt_grp_t touch_qt_grp,
The touch_info_t structure is filled by the library with the Group specific (based on
touch_qt_grp input) information like number of QTouch channels, number of QTouch
sensors, number of QTouch rotors/slider, CAT hardware version, and library version.
The QTouch number of channels, sensors and rotors/slider indicate the total number of
channels, sensors and rotor/slider in use irrespective of Touch measured being disabled
or enabled. (Disabling and Re-enabling of a Sensor using the touch_qt_sensor_disable
and touch_qt_sensor_reenable API does not alter these values).
touch_ret_t touch_qt_sensor_get_delta(touch_qt_grp_t touch_qt_grp,
This API retrieves the delta information associated with a specific QTouch sensor. Delta
is the difference between the current signal value and reference value.
The user must provide the sensor ID whose delta is sought along with a valid pointer to a
Delta variable.
The API updates the delta variable associated with the requested sensor.
touch_ret_t touch_at_sensor_init( touch_config_t *p_touch_config )
Type
sensor_id_t
touch_delta_t*
Type
touch_qt_grp_t
touch_info_t*
Type
touch_config_t*
Comment
Sensor ID for which the delta needs to be retrieved.
Pointer to Delta variable, that will be update by the Touch Library
Specify if the operation is to be performed on Group A Sensors
Comment
or Group B Sensors.
User passes the memory address at which the library
information is to be stored by the library.
Comment
Pointer to Touch Library input configuration structure. The
p_at_config and p_general_config members of the input
sensor_id_t sensor_id,
touch_delta_t *p_delta)
touch_info_t *p_touch_info)
155