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boards: alientek: dnesp32s3b: Add board DNESP32S3B
DNESP32S3B is a development board from Alientek, featuring a compatible ESP32-S3-WROOM-1-N16R8 module and rich set of on-board peripherals, providing an out-of-the-box development experience for AIoT applications. Signed-off-by: Chen Xingyu <hi@xingrz.me>
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‎boards/alientek/dnesp32s3b/Kconfig‎

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# Copyright (c) 2024 Joel Guittet
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# Copyright (c) 2025 Chen Xingyu <hi@xingrz.me>
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# SPDX-License-Identifier: Apache-2.0
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config HEAP_MEM_POOL_ADD_SIZE_BOARD
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int
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default 4096 if BOARD_DNESP32S3B_ESP32S3_PROCPU
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default 256 if BOARD_DNESP32S3B_ESP32S3_APPCPU

‎boards/alientek/dnesp32s3b/Kconfig.dnesp32s3b‎

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# Copyright (c) 2024 Joel Guittet
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# Copyright (c) 2025 Chen Xingyu <hi@xingrz.me>
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_DNESP32S3B
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select SOC_ESP32S3_WROOM_N16R8
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select SOC_ESP32S3_PROCPU if BOARD_DNESP32S3B_ESP32S3_PROCPU
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select SOC_ESP32S3_APPCPU if BOARD_DNESP32S3B_ESP32S3_APPCPU

‎boards/alientek/dnesp32s3b/Kconfig.sysbuild‎

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# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
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# SPDX-License-Identifier: Apache-2.0
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choice BOOTLOADER
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default BOOTLOADER_MCUBOOT
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endchoice
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choice BOOT_SIGNATURE_TYPE
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default BOOT_SIGNATURE_TYPE_NONE
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endchoice

‎boards/alientek/dnesp32s3b/board.cmake‎

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# Copyright (c) 2024 Joel Guittet
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# SPDX-License-Identifier: Apache-2.0
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if(NOT "${OPENOCD}" MATCHES "^${ESPRESSIF_TOOLCHAIN_PATH}/.*")
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set(OPENOCD OPENOCD-NOTFOUND)
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endif()
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find_program(OPENOCD openocd PATHS ${ESPRESSIF_TOOLCHAIN_PATH}/openocd-esp32/bin NO_DEFAULT_PATH)
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include(${ZEPHYR_BASE}/boards/common/esp32.board.cmake)
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include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)

‎boards/alientek/dnesp32s3b/board.yml‎

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board:
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name: dnesp32s3b
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full_name: DNESP32S3B
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vendor: alientek
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socs:
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- name: esp32s3

‎boards/alientek/dnesp32s3b/dnesp32s3b-pinctrl.dtsi‎

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/*
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* Copyright (c) 2025 Chen Xingyu <hi@xingrz.me>
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <dt-bindings/pinctrl/esp32s3-pinctrl.h>
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#include <zephyr/dt-bindings/pinctrl/esp-pinctrl-common.h>
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#include <zephyr/dt-bindings/pinctrl/esp32s3-gpio-sigmap.h>
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&pinctrl {
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uart0_default: uart0_default {
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group1 {
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pinmux = <UART0_TX_GPIO43>;
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output-high;
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};
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group2 {
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pinmux = <UART0_RX_GPIO44>;
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bias-pull-up;
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};
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};
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i2c0_default: i2c0_default {
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group1 {
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pinmux = <I2C0_SCL_GPIO45>,
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<I2C0_SDA_GPIO48>;
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drive-open-drain;
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};
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};
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};

‎boards/alientek/dnesp32s3b/dnesp32s3b_appcpu.dts‎

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/*
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* Copyright (c) 2025 Chen Xingyu <hi@xingrz.me>
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* SPDX-License-Identifier: Apache-2.0
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*/
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/dts-v1/;
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#include <espressif/esp32s3/esp32s3_wroom_n16r8.dtsi>
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#include <espressif/partitions_0x0_amp_16M.dtsi>
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/ {
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model = "DNESP32S3B APPCPU";
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compatible = "alientek,dnesp32s3b";
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chosen {
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zephyr,sram = &sram1;
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zephyr,ipc_shm = &shm0;
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zephyr,ipc = &ipm0;
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zephyr,flash = &flash0;
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zephyr,code-partition = &slot0_appcpu_partition;
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};
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};
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&trng0 {
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status = "okay";
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};
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&ipm0 {
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status = "okay";
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};

‎boards/alientek/dnesp32s3b/dnesp32s3b_appcpu.yaml‎

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identifier: dnesp32s3b/esp32s3/appcpu
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name: DNESP32S3B APPCPU
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type: mcu
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arch: xtensa
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toolchain:
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- zephyr
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supported:
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- uart
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testing:
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ignore_tags:
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- net
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- bluetooth
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- flash
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- cpp
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- posix
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- watchdog
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- logging
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- kernel
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- pm
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- gpio
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- crypto
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- eeprom
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- heap
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- cmsis_rtos
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- jwt
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- zdsp
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vendor: alientek

‎boards/alientek/dnesp32s3b/dnesp32s3b_appcpu_defconfig‎

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# Copyright (c) 2024 Joel Guittet
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# SPDX-License-Identifier: Apache-2.0
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CONFIG_CLOCK_CONTROL=y

‎boards/alientek/dnesp32s3b/dnesp32s3b_procpu.dts‎

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/*
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* Copyright (c) 2025 Chen Xingyu <hi@xingrz.me>
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* SPDX-License-Identifier: Apache-2.0
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*/
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/dts-v1/;
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#include <espressif/esp32s3/esp32s3_wroom_n16r8.dtsi>
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#include <espressif/partitions_0x0_amp_16M.dtsi>
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#include <zephyr/dt-bindings/input/input-event-codes.h>
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#include "dnesp32s3b-pinctrl.dtsi"
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/ {
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model = "DNESP32S3B PROCPU";
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compatible = "alientek,dnesp32s3b";
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aliases {
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led0 = &ledb;
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led1 = &ledr;
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sw0 = &b0;
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sw1 = &k1;
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sw2 = &k2;
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watchdog0 = &wdt0;
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};
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chosen {
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zephyr,sram = &sram1;
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zephyr,console = &uart0;
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zephyr,shell-uart = &uart0;
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zephyr,flash = &flash0;
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zephyr,code-partition = &slot0_partition;
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zephyr,bt-hci = &esp32_bt_hci;
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};
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leds {
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compatible = "gpio-leds";
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ledb: led_blue {
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gpios = <&gpio0 4 GPIO_ACTIVE_LOW>;
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label = "LEDB";
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};
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ledr: led_red {
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gpios = <&io_expander 8 GPIO_ACTIVE_LOW>;
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label = "LEDR";
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};
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};
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buttons {
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compatible = "gpio-keys";
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b0: button_b0 {
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gpios = <&gpio0 0 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
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label = "BOOT";
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zephyr,code = <INPUT_KEY_0>;
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};
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k1: button_k1 {
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gpios = <&io_expander 4 GPIO_ACTIVE_LOW>;
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label = "KEY1";
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zephyr,code = <INPUT_KEY_1>;
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};
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k2: button_k2 {
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gpios = <&io_expander 3 GPIO_ACTIVE_LOW>;
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label = "KEY2";
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zephyr,code = <INPUT_KEY_2>;
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};
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};
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};
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&usb_serial {
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status = "disabled";
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};
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&uart0 {
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status = "okay";
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pinctrl-0 = <&uart0_default>;
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pinctrl-names = "default";
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current-speed = <115200>;
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};
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&gpio0 {
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status = "okay";
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};
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&gpio1 {
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status = "okay";
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};
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&i2c0 {
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status = "okay";
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pinctrl-0 = <&i2c0_default>;
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pinctrl-names = "default";
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clock-frequency = <I2C_BITRATE_STANDARD>;
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io_expander: xl9555@20 {
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compatible = "nxp,pca9555";
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reg = <0x20>;
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gpio-controller;
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#gpio-cells = <2>;
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ngpios = <16>;
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int-gpios = <&gpio0 3 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
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};
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};
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&trng0 {
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status = "okay";
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};
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&wdt0 {
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status = "okay";
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};
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&esp32_bt_hci {
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status = "okay";
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};

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