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2) Copy the library variant that was selected in step 1 to your project’s working directory or
update your project to point to the library selected.
Include the “touch_api.h” header file and assembler source file from the QTouch library in
your application. The touch_api.h can be found in the release package at C:\Program
Files\Atmel\Atmel_QTouch_Libraries_5.x\Generic_QTouch_Libraries\include. The
assembler files mentioned below could be found at the location C:\Program
Files\Atmel\Atmel_QTouch_Libraries_5.x\Generic_QTouch_Libraries\32bit_AVR\UC3\Q
Matrix\common_files
e. qm_asm_uc3c_gcc.x in case of GCC compiler
f.
qm_asm_uc3c_iar.s82 in case of IAR compiler.
3) Initialize/create and use the touch api’s in your application
d. In your application, create, initialize and configure the sensors.
a. The APIs of interest are qt_enable_key/rotor/slider().see sections 5.6.5.2,
e. configure the global configuration parameters valid for all the sensors in the
library
f.
Provide timing for the QTouch libraries to operate. i,e. the QTouch libraries do
not use any timer resources of the microcontroller. The Host application has to
provide the required timing and also call the API’s at the appropriate intervals to
perform touch sense detect operations
4) General application notes
g. The clock, host application and other peripherals needed by the host application
needs to be initialized.
h. The QMatrix acquisition method libraries for 32 Bit devices internally use TIMER0
with channel0 for their operation.
i.
Ensure that there are no conflicts between the resources used by the touch
library and the host application
5.6.10.3.2.1 Resources used by QMatrix acquisition method libraries for 32 Bit device
Devices supported by 32 Bit Qmatrix Acquisition libraries are:
1. AT32UC3C0512
The following additional resources are used by the QMatrix acquisition method libraries.
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Four Analog Comparator
One internal Timer ( Timer0 with channel0 )
Two Analog Comparator Interface ACIFA0/1.
Event System Channel 16 is used.
The device has two Analog comparator interfaces ACIFA0 and ACIFA1 .Each interface
provides the flexibility to configure two analog comparators ACA and ACB comparators..UC3C
has Four Comparators (AC0A , AC1A , AC0B , AC1B), So there are 10 Possible Yb lines as
given in table below.
User has flexibility to configure maximum 8 Yb lines for maximum 64 channel libraries.Below
table states the Yblines which can be configured
64
Yb LInes of the Four
Port A
8207L-AT42-05/12
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