Atmel QTouch Library User Guide

• The General configuration data provided by the p_general_config pointer is common toboth QMatrix, QTouch Group A, QTouch Group B and Autonomous Touch sensors.touch_qm_sensor_configtouch_ret_t touch_qm_sensor_config(sensor_type_t sensor_type,channel_t from_channel,channel_t to_channel,aks_group_t aks_group,threshold_t detect_threshold,hysteresis_t detect_hysteresis,resolution_t position_resolution,uint8_t position_hysteresis,sensor_id_t *p_sensor_id)Arguments Type Commentsensor_type sensor_type_t Specifies sensor type – SENSOR_TYPE_KEY orSENSOR_TYPE_ROTOR orSENSOR_TYPE_SLIDER.The SENSOR_TYPE_UNASSIGNED enum is not a validinput to this API.from_channel channel_t Start channel of the Sensor (rotor, slider or key).to_channel channel_t End channel of the Sensor (rotor, slider or key). For a key,the start and end channels must be the same.aks_group aks_group_t AKS group of this sensor.detect_threshold threshold_t Touch Detect threshold level for Sensor.detect_hysteresis hysteresis_t Value for detection hysteresis.position_resolution resolution_t Position resolution when configuring rotor / sliderposition_hysteresis uint8_t Position hysteresis when configuring rotor / sliderp_sensor_id sensor_id_t* The Sensor ID is updated by the Touch Library uponsuccessful sensor configuration. The Sensor ID starts with0.• This API configures a single QMatrix Key, Rotor or Slider.• The user must provide all the sensor specific settings as input to this API.• Rotor / Slider sensor will occupy contiguous channels from from_channel to to_channel.• For QMatrix acquisition method, 3 to 8 Touch channels per rotor / slider are supported.Keys are always formed using 1 Touch channel.touch_qm_sensor_update_configtouch_ret_t touch_qm_sensor_update_config(sensor_id_t sensor_id,touch_qm_param_t *p_touch_sensor_param)Arguments Type Commentsensor_id sensor_id_t Sensor ID for which the configurationneeds to be updated.155