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boards: adafruit: add initial support for esp32 feather v2
The Adafruit ESP32 Feather V2 is a board that uses the Feather standard layout. It uses an ESP32-PICO v3 02 module, and includes a USB-C connector, LiPo battery charger, NeoPixel RGB LED, and STEMMA QT connector. Signed-off-by: Lena Voytek <lena@voytek.dev>
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‎boards/adafruit/feather_esp32_v2/Kconfig

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# Copyright (c) 2025 Lena Voytek <lena@voytek.dev>
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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_ADAFRUIT_FEATHER_ESP32_V2_ESP32_PROCPU
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default 256 if BOARD_ADAFRUIT_FEATHER_ESP32_V2_ESP32_APPCPU

‎boards/adafruit/feather_esp32_v2/Kconfig.adafruit_feather_esp32_v2

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# Adafruit ESP32 Feather V2 board configuration
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# Copyright (c) 2025 Lena Voytek <lena@voytek.dev>
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_ADAFRUIT_FEATHER_ESP32_V2
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select SOC_ESP32_PICO_V3_02
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select SOC_ESP32_PROCPU if BOARD_ADAFRUIT_FEATHER_ESP32_V2_ESP32_PROCPU
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select SOC_ESP32_APPCPU if BOARD_ADAFRUIT_FEATHER_ESP32_V2_ESP32_APPCPU

‎boards/adafruit/feather_esp32_v2/adafruit_feather_esp32_v2-pinctrl.dtsi

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/*
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* Copyright (c) 2025 Lena Voytek <lena@voytek.dev>
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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/pinctrl/esp-pinctrl-common.h>
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#include <dt-bindings/pinctrl/esp32-pinctrl.h>
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#include <zephyr/dt-bindings/pinctrl/esp32-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_GPIO1>;
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output-high;
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};
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group2 {
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pinmux = <UART0_RX_GPIO3>;
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bias-pull-up;
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};
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};
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uart1_default: uart1_default {
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group1 {
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pinmux = <UART1_TX_GPIO8>;
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output-high;
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};
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group2 {
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pinmux = <UART1_RX_GPIO7>;
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bias-pull-up;
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};
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};
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spim2_default: spim2_default {
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group1 {
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pinmux = <SPIM2_MISO_GPIO21>,
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<SPIM2_SCLK_GPIO5>;
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};
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group2 {
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pinmux = <SPIM2_MOSI_GPIO19>;
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output-low;
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};
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};
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spim3_ws2812_led: spi3_ws2812_led {
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group1 {
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pinmux = <SPIM3_MOSI_GPIO0>;
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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_SDA_GPIO22>,
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<I2C0_SCL_GPIO20>;
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drive-open-drain;
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output-high;
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};
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};
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};

‎boards/adafruit/feather_esp32_v2/adafruit_feather_esp32_v2_appcpu.dts

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/*
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* Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
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*
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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/esp32/esp32_appcpu.dtsi>
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#include <espressif/partitions_0x1000_amp.dtsi>
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/ {
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model = "Adafruit ESP32 Feather V2";
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compatible = "espressif,esp32";
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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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&ipm0 {
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status = "okay";
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};
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&trng0 {
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status = "okay";
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};

‎boards/adafruit/feather_esp32_v2/adafruit_feather_esp32_v2_appcpu.yaml

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identifier: adafruit_feather_esp32_v2/esp32/appcpu
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name: Adafruit ESP32 Feather V2
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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: adafruit

‎boards/adafruit/feather_esp32_v2/adafruit_feather_esp32_v2_appcpu_defconfig

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# SPDX-License-Identifier: Apache-2.0
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CONFIG_CLOCK_CONTROL=y

‎boards/adafruit/feather_esp32_v2/adafruit_feather_esp32_v2_procpu.dts

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/*
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* Copyright (c) 2025 Lena Voytek <lena@voytek.dev>
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*
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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/esp32/esp32_pico_v3_02.dtsi>
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#include "adafruit_feather_esp32_v2-pinctrl.dtsi"
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#include <zephyr/dt-bindings/input/input-event-codes.h>
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#include <zephyr/dt-bindings/led/led.h>
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#include <zephyr/dt-bindings/led/worldsemi_ws2812c.h>
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#include <espressif/partitions_0x1000_amp.dtsi>
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/ {
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model = "Adafruit ESP32 Feather V2";
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compatible = "adafruit,adafruit_feather_esp32_v2";
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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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aliases {
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sw0 = &user_button_0;
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watchdog0 = &wdt0;
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i2c-0 = &i2c0;
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led-strip = &led_strip;
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};
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leds {
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compatible = "gpio-leds";
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status = "okay";
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led0: led_0 {
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label = "Red-LED";
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gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
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};
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};
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gpio_keys {
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compatible = "gpio-keys";
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user_button_0: button_0 {
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label = "User button 0";
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gpios = <&gpio1 6 GPIO_ACTIVE_LOW>; // GPIO 38
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zephyr,code = <INPUT_KEY_0>;
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};
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};
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};
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&uart0 {
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status = "okay";
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current-speed = <115200>;
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pinctrl-0 = <&uart0_default>;
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pinctrl-names = "default";
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};
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&uart1 {
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status = "okay";
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current-speed = <115200>;
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pinctrl-0 = <&uart1_default>;
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pinctrl-names = "default";
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};
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&gpio0 {
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status = "okay";
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neopixel_power_enable {
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gpio-hog;
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gpios = <2 GPIO_ACTIVE_HIGH>;
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output-high;
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};
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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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clock-frequency = <I2C_BITRATE_FAST>;
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pinctrl-0 = <&i2c0_default>;
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pinctrl-names = "default";
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sda-gpios = <&gpio0 22 GPIO_OPEN_DRAIN>;
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scl-gpios = <&gpio0 20 GPIO_OPEN_DRAIN>;
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};
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&timer0 {
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status = "okay";
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};
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&timer1 {
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status = "okay";
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};
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&timer2 {
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status = "okay";
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};
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&timer3 {
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status = "okay";
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};
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&trng0 {
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status = "okay";
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};
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&spi2 {
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#address-cells = <1>;
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#size-cells = <0>;
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pinctrl-0 = <&spim2_default>;
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pinctrl-names = "default";
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};
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/* used for SK6812 */
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&spi3 {
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#address-cells = <1>;
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#size-cells = <0>;
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status = "okay";
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line-idle-low;
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pinctrl-0 = <&spim3_ws2812_led>;
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pinctrl-names = "default";
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led_strip: ws2812@0 {
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compatible = "worldsemi,ws2812-spi";
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reg = <0>;
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spi-max-frequency = <WS2812C_SPI_FREQ>;
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chain-length = <1>;
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color-mapping = <LED_COLOR_ID_GREEN>,
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<LED_COLOR_ID_RED>,
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<LED_COLOR_ID_BLUE>;
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spi-one-frame = <WS2812C_ONE_FRAME>;
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spi-zero-frame = <WS2812C_ZERO_FRAME>;
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};
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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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};

‎boards/adafruit/feather_esp32_v2/adafruit_feather_esp32_v2_procpu.yaml

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identifier: adafruit_feather_esp32_v2/esp32/procpu
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name: Adafruit ESP32 Feather V2
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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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- gpio
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- i2c
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- spi
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- watchdog
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- uart
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- pinmux
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- nvs
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vendor: adafruit

‎boards/adafruit/feather_esp32_v2/adafruit_feather_esp32_v2_procpu_defconfig

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# SPDX-License-Identifier: Apache-2.0
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CONFIG_GPIO=y
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CONFIG_CONSOLE=y
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CONFIG_SERIAL=y
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CONFIG_UART_CONSOLE=y

‎boards/adafruit/feather_esp32_v2/board.cmake

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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)
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# the default ESP32 baud rate is not supported
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board_runner_args(esp32 "--esp-baud-rate=1500000")

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