ATAVRQTOUCHX Atmel, ATAVRQTOUCHX Datasheet - Page 29

• 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

5.6.5.4
This function is used to configure a set of channels as a rotor.
void qt_enable_slider (
Arguments
from_channel
to_channel
aks_group
detect_threshold
detect_hysterisis
position_resolution
position_hysterisis
NOTE:
5.6.5.5
This function is used to initialize the touch sensing for all enabled channels. All required sensors
should be configured before calling this function.
void qt_init_sensing ( void )
Arguments
Void
•
•
•
•
•
•
•
The rotor / slider number depends on the order in which the rotor or sliders are enabled.
The first rotor or slider enabled will use “rotor_slider_values[0]”, the second will use
“rotor_slider_values[1]”, and so on. The reported rotor value is valid when the rotor is
reported as being in detect.
In case of QMatrix acquisition method library, the from_channel and to_channel can be
between 3 to 8 channel numbers apart (i.e. it can support 3 to 8 channel rotors).
In case of QTouch acquisition method library, the from_channel and to_channel can be 3
channels apart (i.e. can support only 3 channel rotors).
A “Slider” sensor requires a contiguous numbers of channels.
The rotor / slider number depends on the order in which the rotor or sliders are enabled.
The first rotor or slider enabled will use “rotor_slider_values[0]”, the second will use.
“rotor_slider_values[1]”, and so on. The reported rotor value is valid when the slider is
reported as being in detect.
In case of QMatrix acquisition method library, the from_channel and to_channel can be
between 3 to 8 channels apart (i.e. it can support 3 to 8 channel sliders).
In case of QTouch acquisition method library, the from_channel and to_channel can be 3
channels apart (i.e. can support only 3 channel sliders).
qt_enable_slider
qt_init_sensing
Type
-
channel_t
channel_t
aks_group_t
threshold_t
hysterisis_t
resolution_t
uint8_t
)
Type
Channel_t
Channel_t
aks_group
threshold_t
hysterisis_t
resolution_t
uint8_t
Comment
-
Comment
Specifies the starting channel number to be configured for use as a
“Slider”
Specifies the end channel number to be configured for use as a “Slider”
Specifies the aks group associated with the sensor being configured as
“Slider”
Specifies the detect threshold for the sensor
Specifies the detection hysteresis for the sensor
Specifies the resolution of the reported position value
Specifies the hysteresis of the reported position value
from_channel ,
to_channel ,
aks_group ,
detect_threshold ,
detect_hysterisis ,
position_resolution ,
position_hysteresis
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