Atmel QTouch Library User Guide

maintains the States of QMatrix, QTouch Group A and QTouch Group B methods independently.This means that QMatrix can be in a state that is different from the state of QTouch Group A or Band vice versa.For the case of Autonomous QTouch, only the TOUCH_STATE_NULL and TOUCH_STATE_INITstates apply in the State diagram.• The touch_at_sensor_init event causes a transition from TOUCH_STATE_NULL toTOUCH_STATE_INIT.• The touch_deinit event causes a transition from TOUCH_STATE_INIT toTOUCH_STATE_NULL.QTouch Library for UC3L State Diagramxx = qm, qtSensor state machine for QMatrixand QTouch GroupA/Btouch_xx_sensor_configtouch_xx_sensor_get_configtouch_xx_get_global_paramtouch_xx_get_libinfoTOUCH_STATE_INITtouch_qm_channel_udpate_burstlentouch_qt_sensor_disabletouch_qt_sensor_reenabletouch_xx_sensor_update_configtouch_xx_sensor_get_configtouch_xx_update_global_paramtouch_xx_get_global_paramtouch_xx_get_libinfotouch_xx_sensors_inittouch_deinittouch_xx_sensors_calibratetouch_qm_channel_udpate_burstlentouch_qt_sensor_disabletouch_qt_sensor_reenableTOUCH_STATE_CALIBRATETOUCH_STATE_ NULLtouch_deinittouch_deinitTOUCH_STATE_READYtouch_xx_sensors_calibratetouch_deinitmeasure_complete_callback(provide measured data andtouch status)touch_xx_sensors_start_acquisitiontouch_xx_sensor_update_configtouch_xx_sensor_get_configtouch_xx_update_global_paramtouch_xx_get_global_paramtouch_xx_get_sensor_deltatouch_xx_get_libinfoTOUCH_STATE_BUSYtouch_xx_get_libinfoFigure 36 State Diagram of QTouch Library for UC3LQMatrix method sensor operation for UC3LQMatrix method pin selection for UC3LPlease refer AT32UC3L datasheet Table 28-2 Pin Selection Guide and Table 3-1 GPIOController Function multiplexing, for mapping between the QMatrix method pin name and theGPIO pin. It is possible to configure a maximum of 17 X Lines and 8 Y-Yk pairs. The X Line X8(PA16) cannot be used for the QMatrix method as it is required to use this pin for the ACREFNfunction.1188207K-AT42-09/11