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boards: holyiot_yj17095: Add Holyiot YJ-17095 module support
The Holyiot YJ-17095 module provides Bluetooth low energy (BLE) connectivity in a very small form factor of 9.4mm x 9.25mm. Signed-off-by: Marc Lasch <[email protected]>
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‎boards/holyiot/yj17095/Kconfig.holyiot_yj17095

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# Holyiot YJ-17095 board configuration
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# Copyright (c) 2025 Marc Lasch <[email protected]>
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_HOLYIOT_YJ17095
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select SOC_NRF52832_QFAA

‎boards/holyiot/yj17095/board.cmake

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board_runner_args(nrfjprog "--softreset")
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board_runner_args(jlink "--device=nRF52832_xxAA" "--speed=4000")
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include(${ZEPHYR_BASE}/boards/common/nrfutil.board.cmake)
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include(${ZEPHYR_BASE}/boards/common/nrfjprog.board.cmake)
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include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

‎boards/holyiot/yj17095/board.yml

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board:
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name: holyiot_yj17095
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full_name: YJ-17095
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vendor: holyiot
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socs:
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- name: nrf52832

‎boards/holyiot/yj17095/doc/img/holyiot_yj17095.webp

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‎boards/holyiot/yj17095/doc/img/pcb_back_gpio.webp

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‎boards/holyiot/yj17095/doc/index.rst

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.. zephyr:board:: holyiot_yj17095
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Overview
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********
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The `Holyiot`_ YJ-17095 hardware features the Nordic Semiconductor nRF52832 ARM Cortex-M4 CPU and the following devices:
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* CLOCK
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* FLASH
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* :abbr:`GPIO (General Purpose Input Output)`
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* :abbr:`MPU (Memory Protection Unit)`
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* :abbr:`NVIC (Nested Vectored Interrupt Controller)`
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* :abbr:`PWM (Pulse Width Modulation)`
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* RADIO (Bluetooth Low Energy)
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* :abbr:`RTC (nRF RTC System Clock)`
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* Segger RTT (RTT Console)
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* :abbr:`WDT (Watchdog Timer)`
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The board does not contain peripherals for direct physical interaction, but it has an on-board 2.4 GHz antenna for
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Bluetooth Low Energy (BLE) communication. There are 11 GPIO pins accessible via solder pads on the board, in addition to
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pins for power supply and SWD programming. The `Nordic Semiconductor Infocenter`_ contains the processor's information
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and the datasheet. The boards measures 9.4mm by 9.25mm.
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Hardware
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********
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The nRF52832 of the Holyiot YJ-17095 is clocked by an external crystal with a frequency of 32 MHz.
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Supported Features
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==================
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.. zephyr:board-supported-hw::
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Connections and IOs
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===================
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.. figure:: img/pcb_back_gpio.webp
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:align: center
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:width: 60%
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:alt: Holyiot YJ-17095 PCB
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Holyiot YJ-17095 PCB and pin out (Credit: Holyiot)
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Programming and Debugging
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*************************
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.. zephyr:board-supported-runners::
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The boards can be programmed and debugged using an external programming and debugging tool, such as a Segger J-Link
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(see :ref:`build_an_application` and :ref:`application_run` for more details).
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The following pins of the Segger J-Link must be connected to the following test
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pads on the PCB (see image):
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* VTref = VDD
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* GND = GND
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* SWDIO = SWDIO
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* SWCLK = SWCLK
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Flashing
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========
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Follow the instructions in the :ref:`nordic_segger` page to install and configure all the necessary software. Further
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information can be found in :ref:`nordic_segger_flashing`. Then build and flash applications as usual
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(see :ref:`build_an_application` and :ref:`application_run` for more details).
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Here is an example for the :zephyr:code-sample:`blinky` application. Since there is not LED mounted on the PCB the
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toggling GPIO can be measured on ``P0.29`` with a multimeter or an oscilloscope.
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.. zephyr-app-commands::
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:zephyr-app: samples/basic/blinky
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:board: holyiot_yj17095
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:goals: build flash
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Debugging
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=========
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Refer to the :ref:`nordic_segger` page to learn about debugging Nordic nRF52x-based boards with a Segger debugger.
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Testing Bluetooth Low Energy (BLE) connectivity
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***********************************************
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The easiest way to test the Bluetooth Low Energy (BLE) connectivity of the board is to build and flash the
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:zephyr:code-sample:`ble_periodic_adv` application.
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.. zephyr-app-commands::
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:zephyr-app: samples/bluetooth/periodic_adv
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:board: holyiot_yj17095
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:goals: build flash
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References
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**********
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.. target-notes::
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.. _Holyiot: http://www.holyiot.com
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.. _Nordic Semiconductor Infocenter: https://infocenter.nordicsemi.com

‎boards/holyiot/yj17095/holyiot_yj17095.dts

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/*
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* Copyright (c) 2025 Marc Lasch <[email protected]>
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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 <nordic/nrf52832_qfaa.dtsi>
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/ {
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model = "Holyiot YJ-17095";
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compatible = "holyiot,yj-17095";
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chosen {
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zephyr,sram = &sram0;
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zephyr,flash = &flash0;
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zephyr,console = &uart0;
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zephyr,shell-uart = &uart0;
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zephyr,code-partition = &slot0_partition;
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};
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leds {
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compatible = "gpio-leds";
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led0: led_0 {
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gpios = <&gpio0 29 GPIO_ACTIVE_HIGH>;
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label = "P0.29";
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};
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};
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/* These aliases are provided for compatibility with samples */
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aliases {
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led0 = &led0;
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watchdog0 = &wdt0;
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};
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};
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&gpiote {
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status = "okay";
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};
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&gpio0 {
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status = "okay";
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};
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&flash0 {
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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boot_partition: partition@0 {
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label = "mcuboot";
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reg = <0x00000000 0xc000>;
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};
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slot0_partition: partition@c000 {
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label = "image-0";
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reg = <0x0000C000 0x37000>;
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};
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slot1_partition: partition@43000 {
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label = "image-1";
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reg = <0x00043000 0x37000>;
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};
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storage_partition: partition@7a000 {
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label = "storage";
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reg = <0x0007a000 0x00006000>;
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};
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};
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};

‎boards/holyiot/yj17095/holyiot_yj17095.yaml

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identifier: holyiot_yj17095
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name: Holyiot YJ-17095
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type: mcu
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arch: arm
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toolchain:
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- zephyr
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- gnuarmemb
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supported:
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- ble
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- pwm
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- watchdog
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ram: 64
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flash: 512

‎boards/holyiot/yj17095/holyiot_yj17095_defconfig

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# SPDX-License-Identifier: Apache-2.0
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# 32kHz clock source
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CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y
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# Enable MPU
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CONFIG_ARM_MPU=y
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# Enable RTT
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CONFIG_USE_SEGGER_RTT=y
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# Enable GPIO
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CONFIG_GPIO=y

‎boards/holyiot/yj17095/pre_dt_board.cmake

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# Copyright (c) 2022 Nordic Semiconductor
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# SPDX-License-Identifier: Apache-2.0
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# Suppress "unique_unit_address_if_enabled" to handle the following overlaps:
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# - power@40000000 & clock@40000000 & bprot@40000000
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# - acl@4001e000 & flash-controller@4001e000
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list(APPEND EXTRA_DTC_FLAGS "-Wno-unique_unit_address_if_enabled")

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