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boards: shields: add support for rtk0eg0019b01002bj shield
Add Capacitive Touch Application Board RTK0EG0019B01002BJ Signed-off-by: The Nguyen <the.nguyen.yf@renesas.com>
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‎boards/shields/rtk0eg0019b01002bj/Kconfig.defconfig

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# Copyright (c) 2025 Renesas Electronics Corporation
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# SPDX-License-Identifier: Apache-2.0
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if INPUT_RENESAS_RA_CTSU
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config INPUT_RENESAS_RA_CTSU_NUM_SELF_ELEMENTS
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default 12
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depends on !INPUT_RENESAS_RA_QE_TOUCH_CFG
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endif # INPUT_RENESAS_RA_CTSU

‎boards/shields/rtk0eg0019b01002bj/Kconfig.shield

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# Copyright (c) 2025 Renesas Electronics Corporation
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# SPDX-License-Identifier: Apache-2.0
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config SHIELD_RTK0EG0019B01002BJ
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def_bool $(shields_list_contains,rtk0eg0019b01002bj)

‎boards/shields/rtk0eg0019b01002bj/doc/img/rtk0eg0019b01002bj.webp

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‎boards/shields/rtk0eg0019b01002bj/doc/index.rst

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.. _rtk0eg0019b01002bj:
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RTK0EG0019B01002BJ Capacitive Touch Application Shield
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######################################################
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Overview
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********
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The RTK0EG0019B01002BJ Capacitive Touch Application Shield is designed to work with the Renesas
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Capacitive Touch Evaluation Kit.
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The shield features a variety of touch sensors, including buttons, sliders, and wheels, making it
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an ideal platform for developing touch-based applications.
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.. figure:: img/rtk0eg0019b01002bj.webp
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:width: 300
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:align: center
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RTK0EG0019B01002BJ Capacitive Touch Application Shield (Credit: Renesas Electronics Corporation)
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Pins Assignment of the RTK0EG0019B01002BJ Shield
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================================================
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Application Header 1 (CN1)
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--------------------------
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+---------+-------------+---------+-------------+
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| CN1 Pin | Function | CN1 Pin | Function |
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+=========+=============+=========+=============+
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| 15 | VCC | 16 | GND |
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+---------+-------------+---------+-------------+
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| 13 | LED_ROW0 | 14 | LED_ROW1 |
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+---------+-------------+---------+-------------+
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| 11 | LED_ROW2 | 12 | LED_ROW3 |
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+---------+-------------+---------+-------------+
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| 9 | N/C | 10 | N/C |
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+---------+-------------+---------+-------------+
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| 7 | LED_COL3 | 8 | N/C |
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+---------+-------------+---------+-------------+
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| 5 | LED_COL1 | 6 | LED_COL2 |
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+---------+-------------+---------+-------------+
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| 3 | N/C | 4 | LED_COL0 |
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+---------+-------------+---------+-------------+
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| 1 | N/C | 2 | N/C |
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+---------+-------------+---------+-------------+
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Application Header 2 (CN2)
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--------------------------
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+---------+-------------------+---------+-------------------+
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| CN2 Pin | Touch Electrode | CN2 Pin | Touch Electrode |
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+=========+===================+=========+===================+
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| 39 | N/C | 40 | TSCAP |
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+---------+-------------------+---------+-------------------+
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| 37 | N/C | 38 | N/C |
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+---------+-------------------+---------+-------------------+
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| 35 | N/C | 36 | TS-W1 |
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+---------+-------------------+---------+-------------------+
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| 33 | N/C | 34 | TS-W2 |
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+---------+-------------------+---------+-------------------+
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| 31 | TS-W3 | 32 | N/C |
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+---------+-------------------+---------+-------------------+
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| 29 | N/C | 30 | N/C |
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+---------+-------------------+---------+-------------------+
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| 27 | N/C | 28 | TS-W4 |
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+---------+-------------------+---------+-------------------+
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| 25 | N/C | 26 | N/C |
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+---------+-------------------+---------+-------------------+
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| 23 | N/C | 24 | N/C |
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+---------+-------------------+---------+-------------------+
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| 21 | N/C | 22 | SHIELD-W1 |
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+---------+-------------------+---------+-------------------+
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| 19 | N/C | 20 | N/C |
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+---------+-------------------+---------+-------------------+
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| 17 | N/C | 18 | N/C |
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+---------+-------------------+---------+-------------------+
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| 15 | N/C | 16 | N/C |
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+---------+-------------------+---------+-------------------+
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| 13 | N/C | 14 | N/C |
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+---------+-------------------+---------+-------------------+
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| 11 | N/C | 12 | N/C |
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+---------+-------------------+---------+-------------------+
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| 9 | TS-B1 | 10 | TS-B2 |
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+---------+-------------------+---------+-------------------+
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| 7 | SHIELD-B1 | 8 | TS-B3 |
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+---------+-------------------+---------+-------------------+
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| 5 | TS-S1 | 6 | SHIELD-S1 |
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+---------+-------------------+---------+-------------------+
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| 3 | TS-S3 | 4 | TS-S2 |
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+---------+-------------------+---------+-------------------+
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| 1 | TS-S5 | 2 | TS-S4 |
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+---------+-------------------+---------+-------------------+
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Programming
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***********
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Set ``--shield rtk0eg0019b01002bj`` when you invoke ``west build``. For example:
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.. zephyr-app-commands::
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:zephyr-app: samples/subsys/input/input_dump
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:board: rssk_ra2l1
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:shield: rtk0eg0019b01002bj
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:goals: build
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References
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**********
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- `Capacitive Touch Evaluation System for RA2L1`_
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.. _Capacitive Touch Evaluation System for RA2L1:
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https://www.renesas.com/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/rtk0eg0022s01001bj-capacitive-touch-evaluation-system-ra2l1

‎boards/shields/rtk0eg0019b01002bj/dts/bindings/rtk0eg0019b01002bj-led-matrix.yaml

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# Copyright (c) 2025 Renesas Electronics Corporation
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# SPDX-License-Identifier: Apache-2.0
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description: |
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This binding provides resources required for the LED matrix
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on the RTK0EG0019B01002BJ board.
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compatible: "rtk0eg0019b01002bj-led-matrix"
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properties:
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led-row-gpios:
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type: phandle-array
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required: true
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description: |
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Identity of GPIOs that will be used to control the LED matrix.
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Each entry in the array corresponds to a row of the matrix.
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led-col-gpios:
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type: phandle-array
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required: true
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description: |
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Identity of GPIOs that will be used to control the LED matrix.
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Each entry in the array corresponds to a column of the matrix.
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num-rows:
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type: int
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required: true
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description: |
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Number of rows in the LED matrix.
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num-cols:
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type: int
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required: true
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description: |
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Number of columns in the LED matrix.

‎boards/shields/rtk0eg0019b01002bj/rtk0eg0019b01002bj.overlay

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/*
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* Copyright (c) 2025 Renesas Electronics Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/dt-bindings/input/input-event-codes.h>
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/ {
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rtk0eg0019b01002bj_cn1: rtk0eg0019b01002bj-cn1 {
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gpio-map-mask = <0xffffffff 0xffffffc0>;
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gpio-map-pass-thru = <0 0x3f>;
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};
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rtk0eg0019b01002bj_led_matrix: rtk0eg0019b01002bj-led-matrix {
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compatible = "rtk0eg0019b01002bj-led-matrix";
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led-row-gpios = <&rtk0eg0019b01002bj_cn1 13 GPIO_ACTIVE_LOW>,
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<&rtk0eg0019b01002bj_cn1 14 GPIO_ACTIVE_LOW>,
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<&rtk0eg0019b01002bj_cn1 11 GPIO_ACTIVE_LOW>,
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<&rtk0eg0019b01002bj_cn1 12 GPIO_ACTIVE_LOW>;
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led-col-gpios = <&rtk0eg0019b01002bj_cn1 4 GPIO_ACTIVE_HIGH>,
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<&rtk0eg0019b01002bj_cn1 5 GPIO_ACTIVE_HIGH>,
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<&rtk0eg0019b01002bj_cn1 6 GPIO_ACTIVE_HIGH>,
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<&rtk0eg0019b01002bj_cn1 7 GPIO_ACTIVE_HIGH>;
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num-rows = <4>;
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num-cols = <4>;
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status = "okay";
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};
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};
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&rtk0eg0019b01002bj_ctsu {
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status = "okay";
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group1 {
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ctsuchac = <0x01 0x0E 0x00 0x00 0x00>;
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ctsuchtrc = <0x01 0x00 0x00 0x00 0x00>;
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rx-count = <3>;
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tx-count = <0>;
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status = "okay";
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rtk0eg0019b01002bj_bt1: button1 {
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compatible = "renesas,ra-ctsu-button";
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elements = <2>;
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event-code = <INPUT_KEY_0>;
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status = "okay";
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};
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rtk0eg0019b01002bj_bt2: button2 {
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compatible = "renesas,ra-ctsu-button";
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elements = <1>;
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event-code = <INPUT_KEY_1>;
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status = "okay";
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};
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rtk0eg0019b01002bj_bt3: button3 {
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compatible = "renesas,ra-ctsu-button";
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elements = <0>;
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event-code = <INPUT_KEY_2>;
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status = "okay";
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};
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};
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group2 {
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ctsuchac = <0xF4 0x01 0x00 0x00 0x00>;
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ctsuchtrc = <0x00 0x01 0x00 0x00 0x00>;
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rx-count = <5>;
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tx-count = <0>;
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status = "okay";
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rtk0eg0019b01002bj_slider: slider {
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compatible = "renesas,ra-ctsu-slider";
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elements = <1>, <0>, <2>, <4>, <3>;
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threshold = <703>;
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event-code = <INPUT_ABS_THROTTLE>;
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status = "okay";
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};
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};
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group3 {
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ctsuchac = <0x00 0x40 0xA4 0x00 0x01>;
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ctsuchtrc = <0x00 0x40 0x00 0x00 0x00>;
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rx-count = <4>;
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tx-count = <0>;
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status = "okay";
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rtk0eg0019b01002bj_wheel: wheel {
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compatible = "renesas,ra-ctsu-wheel";
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elements = <0>, <1>, <2>, <3>;
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event-code = <INPUT_ABS_WHEEL>;
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status = "okay";
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};
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};
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};

‎boards/shields/rtk0eg0019b01002bj/shield.yml

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shield:
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name: rtk0eg0019b01002bj
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full_name: RTK0EG0019B01002BJ Capacitive Touch Application Shield
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vendor: renesas
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supported_features:
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- input
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- gpio

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