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and/or slider is required
needs to configure ROTOR/SLIDER
Needs to be removed for ALL KEYS
configuration
QT_MAX_NUM_ROT
ORS_SLIDERS
QT_DELAY_CYCLES
PORT_X_1
PORT_YA
PORT_YB
PORT_SMP
SMP_PIN
Maximum number of
rotors/sliders the library
supports( possible
values:0,2,3,4,8)
Possible values
:1,2,3,4,5,10,25,50
First IO port for configuring
the X lines.Any IO port
available with the device.
Any IO port available with
the device.
Analog Comparator port
available for the device.
Any IO port available with
the device.
Any IO port available with
the device.
Subject to support for rotors/sliders in
the library selected.
Please refer to section 5.6.8
Drive electrode for touch sensing
using QMatrix acquisition
Receive electrode for touch sensing
using QMatrix acquisition
Receive electrode for touch sensing
using QMatrix acquisition
Port of the Sampling pin for touch
sensing using QMatrix acquisition
Sampling pin for touch sensing using
QMatrix acquisition
Once you have selected the right library variant and configuration parameters for the application,
follow the steps outlined below to integrate the library variant in your application.
1) Fill in the arrays x_line_info_t x_line_info[NUM_X_LINES] y_line_info_t
ya_line_info[NUM_Y_LINES] and y_line_info_t yb_line_info[NUM_Y_LINES] as given in
main.c file.
Filling Arrays in the main.c file
According to the pin availability for the touch sensing, initialize the arrays in the main.c
file as below:
x_line_info_t x_line_info[NUM_X_LINES]= {
FILL_OUT_X_LINE_INFO( 1,0u ),
FILL_OUT_X_LINE_INFO( 1,2u ),
FILL_OUT_X_LINE_INFO( 1,7u ),
FILL_OUT_X_LINE_INFO( 1,15u ),
};
First argument of FILL_OUT_X_LINE_INFO should always be 1 as X port is only on one
port.Second arguments denotes the pins on that particular port.
y_line_info_t ya_line_info[NUM_Y_LINES]= {
FILL_OUT_YA_LINE_INFO( 0u ),
FILL_OUT_YA_LINE_INFO( 5u ),
};
y_line_info_t yb_line_info[NUM_Y_LINES]= {
FILL_OUT_YB_LINE_INFO( 7u ),
FILL_OUT_YB_LINE_INFO( 22u ),
};
Yb lines are one of the inputs of the Analog Comparators.
63
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