ATAVRQTOUCHX Atmel, ATAVRQTOUCHX Datasheet - Page 40

• 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

5.6.6.2
The ordering and numbering of sensors is related to the order in which the sensors are enabled.
This is independent of the acquisition method (QMatrix or QTouch acquisition method libraries).
For example, consider this code snippet:
….
In the case above, the slider on channels 0 to 2 will be sensor 0, the rotor on channels 3-to-5 is
sensor 1 and the keys on channels 6 and 7 are sensor numbers 3 and 4 respectively.
When the touch status is reported or queried, the corresponding sensor positions and status
indicate the touch status. For example, the slider is in detect if “qt_measure_data.
qt_touch_status.sensor_states” bit position 0 is set. Similarly, the rotor on channels 3 to 5 is
sensor 1, and the keys on channels 6 and 7 are sensors 2 and 3 respectively.
However, the code could be re-arranged as follows to give a different sensor numbering.
Now, the rotor is sensor 0, the keys are sensors 1 and 2, and the slider is sensor 3.
40
Channel 52
Channel 53
Channel 54
Channel 55
Channel 56
Channel 57
Channel 58
Channel 59
Channel 60
Channel 61
Channel 62
Channel 63
/* enable slider */
qt_enable_slider
HYST_6_25, RES_8_BIT, 0);
/* enable rotor */
qt_enable_rotor (CHANNEL_3, CHANNEL_5, AKS_GROUP_1, 16, HYST_6_25,
RES_8_BIT, 0);
/* enable keys */
qt_enable_key (CHANNEL_6, AKS_GROUP_2, 10, HYST_6_25);
qt_enable_key (CHANNEL_7, AKS_GROUP_2, 10, HYST_6_25);
/* enable rotor */
qt_enable_rotor
HYST_6_25, RES_8_BIT, 0);
/* enable keys */
qt_enable_key (CHANNEL_6, AKS_GROUP_2, 10, HYST_6_25);
qt_enable_key (CHANNEL_7, AKS_GROUP_2, 10, HYST_6_25);
qt_enable_slider
HYST_6_25, RES_8_BIT, 0);
/* enable slider */
Sensor Numbering
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
(CHANNEL_3,
(CHANNEL_0,
(CHANNEL_0,
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
CHANNEL_5,
CHANNEL_2,
CHANNEL_2,
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
NO_AKS_GROUP,
NO_AKS_GROUP,
AKS_GROUP_1,
8207J-AT42-02/11
X4Y6
X5Y6
X6Y6
X7Y6
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
16,
16,
16,
X4Y6
X5Y6
X6Y6
X7Y6
X0Y7
X1Y7
X2Y7
X3Y7
X4Y7
X5Y7
X6Y7
X7Y7