Atmel QTouch Library User Guide

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QMatrix acquisitionmethod libraries8-bitdevices..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\AVR_Tiny_Mega_XMega\QMatrix\common_filestouch_qm_config.hqm_asm_tiny_mega.Sqm_asm_m8535_m16.Sqm_asm_xmega.Sqm_asm_tiny_mega_sharedyayb.Sqm_asm_m8535_m16_sharedyayb.Sqm_asm_xmega_sharedyayb.SUC3..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\32bit_AVR\UC3\QMatrix\common_filestouch_qm_config32.htouch_qm_config32_assembler.hqm_asm_uc3c_gcc.xqm_asm_uc3c_iar.s82LibraryfilesQTouch acquisitionmethod librariesQMatrix acquisitionmethod libraries8-bitdevicesUC3ATSAM8-bitdevices..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\AVR_Tiny_Mega_XMega\QTouch\library_files..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\32bit_AVR\UC3\QTouch\library_files..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\AT91SAM\SAM3\QTouch\library_files..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\AVR_Tiny_Mega_XMega\QMatrix\library_filesAll libraries ( .r90 for IARand .a for GCC) for thesupported 8 bit devicesare in this location.Also r82 libraries for AVR32 bit devices are alsohereExampleProjectsQTouch acquisitionmethod librariesUC38-bitdevicesUC3..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\32bit_AVR\UC3\QMatrix\library_files..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\AVR_Tiny_Mega_XMega\QTouch\example_projects..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\32bit_AVR\UC3\QTouch\example_projectsAll example projects usingthe libraries above (IARand GCC) for thesupported devices are inthis locationQMatrix acquisitionmethod librariesATSAM8-bitdevices..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\AT91SAM\SAM3\QTouch\library_files\example_projects..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\AVR_Tiny_Mega_XMega\QMatrix\example_projectsUC3..\Atmel_QTouch_Libraries_4.x\Generic_QTouch_Libraries\32bit_AVR\UC3\QMatrix\example_projects508207K-AT42-09/11
Integrating QTouch acquisition method libraries in your applicationThe following steps illustrate how to add QTouch acquisition method support in your application.1) QTouch acquisition method library variants are offered for IAR and AVR Studio/GCC toolchains. First step is to select the compiler tool chain to be used based on the code anddata memory requirements. The list of supported compiler tool chains can be found in5.7.1.2.Use the library selection guide (C:\ Program Files\Atmel\Atmel_QTouch_Libaries_4.x\Library_Selection_Guide.xls) to select the QTouch acquisition method library variantrequired for the device.a. There are specific library variants distributed for each microcontroller. You wouldneed the following parameters to identify the right library variant to be used inyour applicationi. The microcontroller to be used for the application.ii. The acquisition method to be used for the application.iii. The number of channels you need for the application.iv. Whether Rotor and/or Slider support required in the application.v. The number of rotors and/or slider needed for the application.b. There are specific variants of the library which is pre-built with a specificconfiguration set supported. Use the library selection guide (C:\ ProgramFiles\Atmel\ Atmel_QTouch_Libaries_4.x\Library_Selection_Guide.xls) to find thesample project using the QTouch acquisition method library variant.2) Define the constants and symbol names requireda. The next step is to define certain constants and symbols required in the hostapplication files where the touch API is going to be used.b. The constant/symbol names are as listed in the table below.c. The constant/symbol definitions can be placed in any of the following.i. Defined user’s project options. All the constants/symbols must be definedfor both the compiler and assembler preprocessing definitions.ii. As an alternative, it is also declared in the touch_qt_config.h file. Theuser may modify these defined values based on the requirements.Table 3 : Constant and symbol name definitions required to use the QTouch acquisitionmethod librariesSymbol / Constant name Range of values Comments_QTOUCH_This macro has to be defined inorder to use QTouch libraries.SNS1 & SNSK1 Refer to library selection guide. To be used if only singleport pair is needed for thedesign.SNS1 – SNSK1&SNS2 – SNSK2Refer to library selection guide.To be used if two port pairsare needed for the design._SNS1_SNSK1_SAME_PORT_ Comment/uncomment define To be enabled if the sameport is used for SNSK1 andSNS1 pins for QTouch. IfSNSK1 and SNS1 pins areon different ports then thisdefinition is not required._SNS2_SNSK2_SAME_PORT_ Comment/uncomment define To be enabled if the sameport is used for SNSK2 andSNS2 pins for QTouch. IfSNSK1 and SNS1 pins areon different ports then this51
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 38 and 39: Port AAll SNSK pinsterminatedon thi
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 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
Page 88 and 89: X0,X1,X2,X3 are on PB0,PB1,PB2,PB3N
Page 90 and 91: 1. The channel numbers are allocate
Page 92 and 93: SNSK_array[1][1]=0x00; (SNSK odd ma
Page 94 and 95: SNSK_array[1][0]=0x14; (SNSK even m
Page 96 and 97: Figure 5-28: New Design Sensors in
Page 98 and 99: Figure 5-31: Selecting the MCU for
Page 100 and 101:
Figure 5-34: Selecting the SNS and
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2. QTOUCH_STUDIO_MASKS needs to be
Page 104 and 105:
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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