|
Structure |
qt_touch_lib_config_data_t |
|
Input / Output |
Input to the library |
|
Use |
Global Configuration data settings for the library. |
|
Fields |
Type |
Comment |
|---|---|---|
|
qt_recal_threshold |
recal_threshold_t |
Sensor recalibration threshold. Default: RECAL_50 (recalibration threshold = 50 percent of detection threshold. Refer to Recalibration Threshold for more details |
|
qt_di |
uint8_t |
Sensor detect integration (DI) limit. Default value: 4. Refer to Detect Integration for more details |
|
qt_drift_hold_time |
uint8_t |
Sensor drift hold time in units of 200 ms. Default value: 20 (20 x 200 ms = 4s), that is hold off drifting for 4 seconds after leaving detect. Refer to Drift Hold Time for more details |
|
qt_max_on_duration |
uint8_t |
Sensor maximum on duration in units of 200 ms. For example: 150 = recalibrate after 30s (150 x 200 ms). 0 = recalibration disabled Default value: 0 (recalibration disabled). Refer to Maximum ON Duration for more details. |
|
qt_neg_drift_rate |
uint8_t |
Sensor negative drift rate in units of 200 ms. Default value: 20 (20 x 200 ms = 4s per LSB). Refer to Positive / Negative Drift for more details |
|
qt_pos_drift_rate |
uint8_t |
Sensor positive drift rate in units of 200 ms. Default value: 5 (5 x 200 ms = 1s per LSB). Refer to Positive / Negative Drift for more details |
|
qt_pos_recal_delay |
uint8_t |
Sensor positive recalibration delay. Default: 3. Refer to Positive Recalibration Delay for more details. |
The measurement limit for touch sensing using QTouch acquisition method is hard coded as 8192.
The QTouch library exports a variable of this type so that the user can specify the threshold parameters for the library. The API qt_set_parameters() should be called to apply the parameters specified.
extern qt_touch_lib_config_data_t qt_config_data;