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boards: add dt_xt_zb1_devkit
Introduce a bl70x board Signed-off-by: Camille BAUD <[email protected]>
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‎boards/doiting/dt_xt_zb1_devkit/Kconfig.dt_xt_zb1_devkit‎

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# Copyright (c) 2025 MASSDRIVER EI (massdriver.space)
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_DT_XT_ZB1_DEVKIT
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select SOC_BL702C10Q2H

‎boards/doiting/dt_xt_zb1_devkit/board.cmake‎

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# Copyright (c) 2025 MASSDRIVER EI (massdriver.space)
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#
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# SPDX-License-Identifier: Apache-2.0
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board_runner_args(openocd --cmd-pre-init "source [find bl70x.cfg]")
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board_runner_args(openocd --use-elf --no-load --no-init)
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board_runner_args(openocd --gdb-init "set mem inaccessible-by-default off")
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board_runner_args(openocd --gdb-init "set architecture riscv:rv32")
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board_runner_args(openocd --gdb-init "set remotetimeout 250")
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board_runner_args(openocd --gdb-init "set print asm-demangle on")
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board_runner_args(openocd --gdb-init "set backtrace limit 32")
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board_runner_args(openocd --gdb-init "mem 0x22010000 0x22014000 rw")
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board_runner_args(openocd --gdb-init "mem 0x42010000 0x42014000 rw")
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board_runner_args(openocd --gdb-init "mem 0x22014000 0x22020000 rw")
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board_runner_args(openocd --gdb-init "mem 0x42014000 0x42020000 rw")
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board_runner_args(openocd --gdb-init "mem 0x22020000 0x2203C000 rw")
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board_runner_args(openocd --gdb-init "mem 0x42020000 0x4203C000 rw")
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board_runner_args(openocd --gdb-init "mem 0x23000000 0x23400000 ro")
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include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)
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board_runner_args(bflb_mcu_tool --chipname bl702)
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include(${ZEPHYR_BASE}/boards/common/bflb_mcu_tool.board.cmake)
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board_set_flasher(bflb_mcu_tool)

‎boards/doiting/dt_xt_zb1_devkit/board.yml‎

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board:
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name: dt_xt_zb1_devkit
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full_name: XT-ZB1 Zigbee 3.0 and BLE 5.0 Coexistence Module Development Kit
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vendor: doiting
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socs:
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- name: bl702c10q2h

‎boards/doiting/dt_xt_zb1_devkit/doc/img/dt_xt_zb1_devkit.webp‎

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‎boards/doiting/dt_xt_zb1_devkit/doc/index.rst‎

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.. zephyr:board:: dt_xt_zb1_devkit
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XT-ZB1 Development Kit
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#######################
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Overview
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********
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XT-ZB1 Zigbee 3.0 and BLE 5.0 coexistence Module is a highly integrated single-chip solution
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providing Zigbee and BLE in a single chip.
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It also provides a bunch of configurable GPIO, which are configured as digital
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peripherals for different applications and control usage.
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The XT-ZB1 Module use BL702 as Zigbee and BLE coexistence soc chip.
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The embedded memory configuration provides simple application developments.
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Hardware
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********
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For more information about the Bouffalo Lab BL702 MCU:
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- `Bouffalo Lab BL702 MCU Website`_
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- `Bouffalo Lab BL702 MCU Datasheet`_
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- `Bouffalo Lab Development Zone`_
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- `Doctors of Intelligence & Technology (www.doiting.com)`_
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Supported Features
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==================
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.. zephyr:board-supported-hw::
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System Clock
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============
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The XT-ZB1 board is configured to run at max speed by default (144MHz).
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Serial Port
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===========
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The ``dt_xt_zb1_devkit`` board uses UART0 as default serial port. It is connected
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to USB Serial converter and port is used for both program and console.
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Programming and Debugging
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*************************
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.. zephyr:board-supported-runners::
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Samples
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=======
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#. Build the Zephyr kernel and the :zephyr:code-sample:`hello_world` sample
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application:
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:board: dt_xt_zb1_devkit
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:goals: build flash
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#. Run your favorite terminal program to listen for output. Under Linux the
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terminal should be :code:`/dev/ttyUSB0`. For example:
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.. code-block:: console
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$ screen /dev/ttyUSB0 115200
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The -o option tells minicom not to send the modem initialization
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string. Connection should be configured as follows:
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- Speed: 115200
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- Data: 8 bits
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- Parity: None
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- Stop bits: 1
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Then, press and release RST button
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.. code-block:: console
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*** Booting Zephyr OS build v4.2.0-1031-g63c9db88d01a ***
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Hello World! dt_xt_zb1_devkit/bl702c10q2h
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Congratulations, you have ``dt_xt_zb1_devkit`` configured and running Zephyr.
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.. _Bouffalo Lab BL702 MCU Website:
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https://www.bouffalolab.com/product/?type=detail&id=8
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.. _Bouffalo Lab BL702 MCU Datasheet:
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https://github.com/bouffalolab/bl_docs/tree/main/BL702_DS/en
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.. _Bouffalo Lab Development Zone:
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https://dev.bouffalolab.com/home?id=guest
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.. _Doctors of Intelligence & Technology (www.doiting.com):
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https://www.doiting.com

‎boards/doiting/dt_xt_zb1_devkit/dt_xt_zb1_devkit-pinctrl.dtsi‎

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/*
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* Copyright (c) 2025 MASSDRIVER EI (massdriver.space)
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <dt-bindings/pinctrl/bl702x-pinctrl.h>
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&pinctrl {
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uart0_default: uart0_default {
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group1 {
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pinmux = <GPIO15_UART0_RX>,
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<GPIO14_UART0_TX>;
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bias-pull-up;
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input-schmitt-enable;
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};
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};
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uart0_sleep: uart0_sleep {
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group1 {
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pinmux = <GPIO15_UART0_RX>,
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<GPIO14_UART0_TX>;
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bias-high-impedance;
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};
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};
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};

‎boards/doiting/dt_xt_zb1_devkit/dt_xt_zb1_devkit.dts‎

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/*
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* Copyright (c) 2025 MASSDRIVER EI (massdriver.space)
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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 <bflb/bl70x.dtsi>
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#include "dt_xt_zb1_devkit-pinctrl.dtsi"
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/ {
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model = "Zigbee 3.0 and BLE 5.0 Coexistence Module Development Kit";
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compatible = "bflb,bl702";
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chosen {
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zephyr,flash = &flash0;
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zephyr,code-partition = &slot0_partition;
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zephyr,itcm = &itcm;
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zephyr,dtcm = &dtcm;
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zephyr,sram = &sram0;
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zephyr,console = &uart0;
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zephyr,shell-uart = &uart0;
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};
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};
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&cpu0 {
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clock-frequency = <DT_FREQ_M(144)>;
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};
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&flashctrl {
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flash0: flash@23000000 {
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compatible = "soc-nv-flash", "mxicy,kh25v80";
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reg = <0x23000000 (0x1000000 - 0x2000)>;
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write-block-size = <256>;
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erase-block-size = <DT_SIZE_K(4)>;
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/* jedec-id = [c2 20 14]; */
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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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slot0_partition: partition@0 {
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label = "image-0";
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reg = <0x00000000 0x80000>;
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read-only;
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};
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storage_partition: partition@80000 {
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label = "storage";
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reg = <0x00080000 (0x80000 - 0x2000)>;
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};
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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-1 = <&uart0_sleep>;
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pinctrl-names = "default", "sleep";
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};

‎boards/doiting/dt_xt_zb1_devkit/dt_xt_zb1_devkit.yaml‎

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# Copyright (c) 2025 MASSDRIVER EI (massdriver.space)
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# SPDX-License-Identifier: Apache-2.0
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identifier: dt_xt_zb1_devkit
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name: Zigbee 3.0 and BLE 5.0 Coexistence Module Development Kitt
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type: mcu
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arch: riscv
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ram: 132
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toolchain:
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- zephyr
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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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supported:
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- pinctrl
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- uart
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vendor: doiting

‎boards/doiting/dt_xt_zb1_devkit/dt_xt_zb1_devkit_defconfig‎

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# Copyright (c) 2021-2025 ATL Electronics
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# SPDX-License-Identifier: Apache-2.0
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CONFIG_CONSOLE=y
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CONFIG_SERIAL=y
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CONFIG_UART_CONSOLE=y
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CONFIG_UART_INTERRUPT_DRIVEN=y

‎boards/doiting/dt_xt_zb1_devkit/support/bl70x.cfg‎

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# Copyright (c) 2024-2025 MASSDRIVER EI (massdriver.space)
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#
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# SPDX-License-Identifier: Apache-2.0
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if { [info exists CHIPNAME] } {
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set _CHIPNAME $CHIPNAME
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} else {
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set _CHIPNAME riscv
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}
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if { [info exists WORKAREASIZE] } {
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set _WORKAREASIZE $WORKAREASIZE
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} else {
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set _WORKAREASIZE 0x10000
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}
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if { [info exists WORKAREAADDR] } {
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set _WORKAREAADDR $WORKAREAADDR
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} else {
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set _WORKAREAADDR 0x22020000
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}
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if { [info exists CPUTAPID] } {
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set _CPUTAPID $CPUTAPID
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} else {
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set _CPUTAPID 0x20000e05
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}
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transport select jtag
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jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id $_CPUTAPID
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set _TARGETNAME $_CHIPNAME.cpu
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target create $_TARGETNAME.0 riscv -chain-position $_TARGETNAME
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$_TARGETNAME.0 configure -work-area-phys $_WORKAREAADDR -work-area-size $_WORKAREASIZE -work-area-backup 1
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echo "Ready for Remote Connections"
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$_TARGETNAME.0 configure -event reset-assert-pre {
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echo "reset-assert-pre"
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adapter speed 400
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}
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$_TARGETNAME.0 configure -event reset-deassert-post {
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echo "reset-deassert-post"
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adapter speed 400
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reg mstatus 0x0
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reg pc 0x21000000
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}
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$_TARGETNAME.0 configure -event reset-init {
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echo "reset-init"
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adapter speed 400
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}
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$_TARGETNAME.0 configure -event gdb-attach {
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echo "Debugger attaching: halting execution"
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reset halt
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gdb_breakpoint_override hard
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}
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$_TARGETNAME.0 configure -event gdb-detach {
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echo "Debugger detaching: resuming execution"
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resume
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}
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gdb_memory_map enable
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gdb_flash_program enable
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# 'progbuf', 'sysbus' or 'abstract'
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riscv set_mem_access sysbus
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riscv set_command_timeout_sec 1
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init
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reset init
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reset init

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