Atmel QTouch Library User Guide

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Port AAll SNSK pinsterminatedon this portPin 0Pin 1Pin 2Pin 3Pin 4Pin 5channel 0channel 1channel 2channel 3channel 4channel 5sensor0sensor1SNS – SNSKPort Pair onePin 6Pin 7Pin 0Pin 1channel 6channel 7channel 0channel 1sensor2sensor3Port BAll SNS pinsterminatedon this portPin 2Pin 3Pin 4Pin 5channel 2channel 3channel 4channel 5Pin 6channel 6Pin 7channel 7Port CAll SNSK pinsterminatedon this portPin 0Pin 1Pin 2Pin 3Pin 4Pin 5channel 8channel 9channel 10channel 11channel 12channel 13sensor4sensor5SNS – SNSKPort Pair twoPin 6Pin 7Pin 0Pin 1channel 14channel 15channel 8channel 9sensor6sensor7Port DAll SNS pinsterminatedon this portPin 2Pin 3Pin 4Pin 5channel 10channel 11channel 12channel 13Pin 6channel 14Pin 7channel 15Figure 5-7 : channel numbering for QTouch acquisition method when the SNS and SNSKpins are connected to different ports.Channel numbering when routing SNS and SNSK pinsto different ports with pin configurabilityWhen SNS and SNSK pins are available on different ports, the channel numberingfollows the pin numbering in the ports selected based on SNS_array and SNSK_arraybits enabled.The pins which needs to be used for touch should be provided in the PinConfigurator Wizard in QTouch Studio and the pin configurator Wizard tool will generatethe SNS_array and SNSK_array masks and channel numbering will be based on whichpins are enabled for touch in consecutive way.Below is an example to illustrate the same:388207K-AT42-09/11
Example:SNS and SNSK pins are configured with few rules keeping in mind as illustrated insectionPins A0 ,A1,A4 and A6 of PORT A are SNS pins and pins B2,B3,B5,B7 are SNSK pins ofPORT B.Channel 0 will be forming a SNS-SNSK pair as A0B2.Channel 1 will be forming a SNS-SNSK pair as A1B3Channel 2 will be forming a SNS-SNSK pair as A4B5Channel 3 will be forming a SNS-SNSK pair as A6B7.The channel numbering is not dependent on the pin numbering.Channel numbering when routing SNS and SNSK pins tothe same portWhen SNS and SNSK pins are connected to the same port, the even pin numbers will be used asSNS pins and the odd pins will be used as the SNSK pins.• The number of channels supported will be limited 4 channels for an 8-bit device and 16channels for a 32-bit device (e.g. UC3).• For e.g., for a 4 channel configuration where the SNS and SNSK pins are connected toPort B, the port pins 0&1 are used for channel 0.• The channel number is derived from the position of the pins used for SNS and SNSKlines for any channel.ochannel number = floor( [SNS(or SNSK) pin number] / 2 )For e.g., pins 4 and 5 are connected to a SNS/SNSK pair and the channel numberassociated with the SNS/SNSK pin is 2.Port AAllSNSKandSNS pinsterminatedon the same portPin 0Pin 1Pin 2Pin 3Pin 4Pin 5Pin 6Pin 7channel 0channel 1channel 2channel 3SNSK pinSNS pinSNS pinSNSK pinSNS pinSNSK pinSNS pinSNSK pinsensor1sensor2Figure 5-8 : Channel numbering for QTouch acquisition method when the SNS and SNSKpins are connected to the same portChannel numbering when routing SNS and SNSK pins tothe same port with pin configurabilityWhen SNS and SNSK pins are connected to the same port, different pins can be used as SNSand SNSK pins.But SNS and SNSK pins are configured with few rules keeping in mind asillustrated in section39
Page 1: Atmel QTouch LibraryUser GuideSuppo
Page 4: 5.6.11.6.1 Debug Support in the sam
Page 7 and 8: 6.3.16.21 touch_info_t ............
Page 12 and 13: • ARM: refers to a device in the
Page 14 and 15: Libraries for AVR microcontrollers
Page 16 and 17: QMatrix charge transfer is labeled
Page 18 and 19: Maximum ON DurationIf an object uni
Page 20 and 21: Setting Variable name Data Type Uni
Page 22 and 23: Guard ChannelGuard channel in Qtouc
Page 24 and 25: 7 AKS groups are supported by the l
Page 26 and 27: Data structuresThis section lists t
Page 28 and 29: The signal gain for each sensor is
Page 30 and 31: • This function can be called any
Page 32 and 33: unit16_t qt_measure_sensors( uint16
Page 34 and 35: Channel NumberingChannel numbering
Page 36 and 37: qt_reset_sensing()qt_enable_xxx()qt
Page 40 and 41: Example:Pins A0 ,A3 and A5 of PORT
Page 42 and 43: Channel 47 N/A N/A N/A N/A N/A X7Y5
Page 44 and 45: channel 0channel 1channel 2channel
Page 46 and 47: Disabling and Enabling of Pull-up f
Page 48 and 49: ‣ Recommended threshold should be
Page 50 and 51: QMatrix acquisitionmethod libraries
Page 52 and 53: definition is not required.QT_NUM_C
Page 54 and 55: SNS1 and SNSK1 pins usethe same por
Page 56 and 57: • It is recommended to disable PU
Page 58 and 59: Table 4 :List of configurable param
Page 60 and 61: Number ofchannels requiredfor the a
Page 62 and 63: 2. The above definitions should be
Page 64 and 65: NUM_Y_LINES_ROTOR_SLIDER_QT_MAX_NUM
Page 66 and 67: has Four Comparators (AC0A , AC1A ,
Page 68 and 69: Note: When using the IAR IDE / comp
Page 70 and 71: Figure 5-11: Selecting the right co
Page 72 and 73: SNS1 - SNSK1 & SNS2 -SNSK2QT_NUM_CH
Page 74 and 75: Selecting the right configurationTh
Page 76 and 77: Figure 5-20 : Specifying QMatrix ac
Page 78 and 79: Debug Support in Example applicatio
Page 80 and 81: Support for different compiler tool
Page 82 and 83: Maximum number of rotor / sliders s
Page 84 and 85: Tips on pin assignments for the sen
Page 86 and 87: 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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Figure 5-42: Start window of the co
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Figure 5-45: Selecting the X,YA,YB,
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The code can be copied using the
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ApplicablereleaseQTouch libraries v
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Device Specific LibrariesIntroducti
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Table 8 Compiler tool chains suppor
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maintains the States of QMatrix, QT
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equired as shown in the case A of F
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Figure 37 QMatrix method schematicQ
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Figure 39 QMatrix API Flow diagram
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CAT Module Pin NameCSA0CSB0CSA1CSB1
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The QTouch method acquisition using
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Host Application codeUsing the init
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Frozen Stop Stop Run Run Run Run On
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Figure 45 Raw acquisition mode API
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Figure 46 GNU Example project usage
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the QTouch Library as QMatrix data
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TOUCH_STATUS_CHANGE 0x0002u Status
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sensor_type_tEnumerationUsesensor_t
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OUT_OF_TOUCHIN_TOUCHCurrently the a
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num_channel_signals uint8_t Length
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touch_at_statusstructureInput / Out
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UseData structure which holds the R
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variable to the Touch library. The
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structure.p_qta_config touch_qt_con
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p_touch_sensor_param touch_qm_param
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current_time_ms touch_time_t Curren
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touch_ret_t touch_qt_sensor_config(
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touch_qt_sensors_calibratetouch_ret
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touch_qt_get_libinfotouch_ret_t tou
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• This API updates the configurat
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Rule Rule Description Advisory/Requ
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VCCPA0No ConnectionPA1PA2ATtiny20PA
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QTouch Library configuration parame
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Recommended setting.Table 19 QTouch
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Figure 51 Schematic overview of QTo
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QTouch Library configuration parame
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Devices supportedThe list of differ
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• The channel number is derived f
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MISRA Compliance ReportThis section
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May 2010Ver 4.2July 2010Ver 4.3Jan
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Atmel QTouch Library User Guide

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