Atmel QTouch Library User Guide

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p_touch_sensor_param touch_qm_param_t* Pointer to the user sensor configurationstructure.• This API updates the configuration of a QMatrix sensor with values different from theones initialized by the touch_qm_sensor_config API. If the sensor was not configuredalready, the API will return error.• The user must populate the structure pointed by p_touch_sensor_param with requiredsettings before calling this API.touch_qm_sensor_get_configtouch_ret_t touch_qm_sensor_get_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.p_touch_sensor_param touch_sensor_param_t* Pointer to the user sensor configurationstructure.• This API copies the current configuration of a QMatrix sensor into the user configurationstructure.touch_qm_channel_udpate_burstlentouch_ret_t touch_qm_channel_udpate _burstlen(channel_t channel,touch_bl_t qm_burst_length)Arguments Type Commentchannel uint8_t Channel number for which the burst length is to be set.qm_burst_length touch_bl_t QMatrix burst length. The burst length value can be 1 to255. A value of 1 can be used to disable bursting ona given channel.• This API updates the burst length of the specified QMatrix channel• This API can also be used to disable Touch measurement on a Sensor.• In order to disable a Sensor, the burst length value of all the channels corresponding tothe Sensor must be set to 1. A Sensor can then be re-enabled by setting the appropriateburst length for all channels using this API.Note: When disabling a sensor care must be taken such that all channels of the Sensorare set to 1. If any of the channels are missed out, it will result in undesired behavior ofthe Sensor. Similarly when re-enabling a Sensor, if one or more channels are leftdisabled with a burst length value of 1, it will result in undesired behavior of the Sensor.1568207K-AT42-09/11
• The touch_qm_sensors_calibrate API needs to be called whenever burst length isupdated for one or more channels before starting a new Touch measurement using thetouch_qm_sensors_start_acquisition API.touch_qm_update_global_paramtouch_ret_t touch_qm_update_global_param( touch_global_param_t *p_global_param )Arguments Type Commentp_global_param touch_global_param_t Pointer to user global parameters structure forQMatrix.• This API can be used to update the QMatrix global parameters, with values different fromthe ones initialized using touch_qm_sensors_init API.touch_qm_get_global_paramtouch_ret_t touch_qm_get_global_param( touch_global_param_t *p_global_param )Arguments Type Commentp_global_param touch_global_param_t Pointer to user global parameters structure forQMatrix.• This API can be called to retrieve the QMatrix global parameters.touch_qm_sensors_calibratetouch_ret_t touch_qm_sensors_calibrate( void )Arguments Type CommentVoid -• This API can be used to calibrate all configured Sensors.• Calibration of all Sensors must be performed when –ooAll the Sensors have been configured using touch_sensor_config API afterinitialization of the Touch <strong>Library</strong>.A sensor or a group of Sensors have been disabled or re-enabled.touch_qm_sensors_start_acquisitiontouch_ret_t touch_qm_sensors_start_acquisition(touch_time_t current_time_ms,touch_qm_dma_t *p_touch_dma,touch_acq_mode_t qm_acq_mode,void (*measure_complete_callback)( touch_measure_data_t *p_measure_data ))Arguments Type Comment157
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Atmel QTouch LibraryUser GuideSuppo
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5.6.11.6.1 Debug Support in the sam
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6.3.16.21 touch_info_t ............
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• ARM: refers to a device in the
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Libraries for AVR microcontrollers
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QMatrix charge transfer is labeled
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Maximum ON DurationIf an object uni
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Setting Variable name Data Type Uni
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Guard ChannelGuard channel in Qtouc
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7 AKS groups are supported by the l
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Data structuresThis section lists t
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The signal gain for each sensor is
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• This function can be called any
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unit16_t qt_measure_sensors( uint16
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Channel NumberingChannel numbering
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qt_reset_sensing()qt_enable_xxx()qt
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Port AAll SNSK pinsterminatedon thi
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Example:Pins A0 ,A3 and A5 of PORT
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Channel 47 N/A N/A N/A N/A N/A X7Y5
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channel 0channel 1channel 2channel
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Disabling and Enabling of Pull-up f
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‣ Recommended threshold should be
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QMatrix acquisitionmethod libraries
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definition is not required.QT_NUM_C
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SNS1 and SNSK1 pins usethe same por
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• It is recommended to disable PU
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Table 4 :List of configurable param
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Number ofchannels requiredfor the a
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2. The above definitions should be
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NUM_Y_LINES_ROTOR_SLIDER_QT_MAX_NUM
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has Four Comparators (AC0A , AC1A ,
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Note: When using the IAR IDE / comp
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Figure 5-11: Selecting the right co
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SNS1 - SNSK1 & SNS2 -SNSK2QT_NUM_CH
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Selecting the right configurationTh
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Figure 5-20 : Specifying QMatrix ac
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Debug Support in Example applicatio
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Support for different compiler tool
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Maximum number of rotor / sliders s
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Tips on pin assignments for the sen
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ATtiny88)v1g1s2(ATtiny461,ATmega16a
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X0,X1,X2,X3 are on PB0,PB1,PB2,PB3N
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1. The channel numbers are allocate
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SNSK_array[1][1]=0x00; (SNSK odd ma
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SNSK_array[1][0]=0x14; (SNSK even m
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Figure 5-28: New Design Sensors in
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Figure 5-31: Selecting the MCU for
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Figure 5-34: Selecting the SNS and
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2. QTOUCH_STUDIO_MASKS needs to be
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Figure 5-38: Selecting New Design3.
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Page 108 and 109: Figure 5-45: Selecting the X,YA,YB,
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Page 112 and 113: ApplicablereleaseQTouch libraries v
Page 114 and 115: Device Specific LibrariesIntroducti
Page 116 and 117: Table 8 Compiler tool chains suppor
Page 118 and 119: maintains the States of QMatrix, QT
Page 120 and 121: equired as shown in the case A of F
Page 122 and 123: Figure 37 QMatrix method schematicQ
Page 124 and 125: Figure 39 QMatrix API Flow diagram
Page 126 and 127: CAT Module Pin NameCSA0CSB0CSA1CSB1
Page 128 and 129: The QTouch method acquisition using
Page 130 and 131: Host Application codeUsing the init
Page 132 and 133: Frozen Stop Stop Run Run Run Run On
Page 134 and 135: Figure 45 Raw acquisition mode API
Page 136 and 137: Figure 46 GNU Example project usage
Page 138 and 139: the QTouch Library as QMatrix data
Page 140 and 141: TOUCH_STATUS_CHANGE 0x0002u Status
Page 142 and 143: sensor_type_tEnumerationUsesensor_t
Page 144 and 145: OUT_OF_TOUCHIN_TOUCHCurrently the a
Page 146 and 147: num_channel_signals uint8_t Length
Page 148 and 149: touch_at_statusstructureInput / Out
Page 150 and 151: UseData structure which holds the R
Page 152 and 153: variable to the Touch library. The
Page 154 and 155: structure.p_qta_config touch_qt_con
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Page 160 and 161: touch_ret_t touch_qt_sensor_config(
Page 162 and 163: touch_qt_sensors_calibratetouch_ret
Page 164 and 165: touch_qt_get_libinfotouch_ret_t tou
Page 166 and 167: • This API updates the configurat
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Page 172 and 173: QTouch Library configuration parame
Page 174 and 175: Recommended setting.Table 19 QTouch
Page 176 and 177: Figure 51 Schematic overview of QTo
Page 178 and 179: QTouch Library configuration parame
Page 180 and 181: Devices supportedThe list of differ
Page 182 and 183: • The channel number is derived f
Page 184 and 185: MISRA Compliance ReportThis section
Page 186 and 187: May 2010Ver 4.2July 2010Ver 4.3Jan
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Atmel QTouch Library User Guide

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