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boards: microchip: add PIC32CX SG41 Curiosity Ultra Evaluation Kit support
Add initial support for the Microchip PIC32CX SG41 Curiosity Ultra board Product page: https://www.microchip.com/en-us/development-tool/EV06X38A Signed-off-by: Muhammed Asif <muhammed.asif@microchip.com>
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‎boards/microchip/pic32c/pic32cx_sg41_cult/Kconfig.pic32cx_sg41_cult‎

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# Copyright (c) 2025 Microchip Technology Inc.
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_PIC32CX_SG41_CULT
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select SOC_PIC32CX1025SG41128

‎boards/microchip/pic32c/pic32cx_sg41_cult/board.cmake‎

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# Copyright (c) 2025 Microchip Technology Inc.
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# SPDX-License-Identifier: Apache-2.0
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board_runner_args(jlink "--device=PIC32CX1025SG41128" "--speed=4000")
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include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

‎boards/microchip/pic32c/pic32cx_sg41_cult/board.yml‎

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# Copyright (c) 2025 Microchip Technology Inc.
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# SPDX-License-Identifier: Apache-2.0
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board:
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name: pic32cx_sg41_cult
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full_name: PIC32CX SG41 Curiosity Ultra
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vendor: microchip
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socs:
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- name: pic32cx1025sg41128

‎boards/microchip/pic32c/pic32cx_sg41_cult/doc/img/pic32cx_sg41_cult.webp‎

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‎boards/microchip/pic32c/pic32cx_sg41_cult/doc/index.rst‎

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.. zephyr:board:: pic32cx_sg41_cult
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Overview
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********
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The PIC32CX SG41 Curiosity Ultra evaluation kit is a hardware platform
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to evaluate the Microchip PIC32CX SG41 microcontrollers, and the
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evaluation kit part number is EV06X38A. The evaluation kit offers a
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set of features that enables the PIC32CX SG41 users to get started with
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the PIC32CX SG41 peripherals, and to obtain an understanding of how to
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integrate the device in their own design.
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Hardware
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********
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- PIC32CX1025SG41128 microcontroller
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- One mechanical reset button
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- Two mechanical programmable buttons
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- Two user LEDs
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- 32.768 kHz crystal
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- 12 MHz oscillator
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- USB interface, Host or Device
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- 64 Mbit Quad SPI Flash
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- AT24MAC402 Serial EEPROM with EUI-48™ MAC address
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- Ethernet 10/100 Mbps
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- RMII Interface with modular PHY Header
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- SD/SDIO card connector
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- Two CAN interfaces with on-board transceivers
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- I²C-based temperature sensor
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- DAC Output Header
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- mikroBUS header connector
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- Arduino Uno header connectors
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- CoreSight 10 connector
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- 10-pin Cortex® Debug header (SWD)
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- CoreSight 20 connector
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- 20-pin Cortex Debug + ETM Connector (SWD and 4-bit Trace)
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- Virtual COM port (CDC)
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- USB powered
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- Power Header and Barrel Jack connector for external power sources
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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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The `PIC32CX SG41 Curiosity Ultra User Guide`_ has detailed information about board connections.
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Programming & Debugging
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***********************
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.. zephyr:board-supported-runners::
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Flash Using J-Link
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==================
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To flash the board using the J-Link debugger, follow the steps below:
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1. Install J-Link Software
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- Download and install the `J-Link software`_ tools from Segger.
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- Make sure the installed J-Link executables (e.g., ``JLink``, ``JLinkGDBServer``)
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are available in your system's PATH.
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2. Connect the Board
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- Connect the `J32 Debug Probe`_ to the board's **CORTEX DEBUG** (J400) header.
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- Connect the other end of the J32 Debug Probe to your **host machine (PC)** via USB.
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- Connect the DEBUG USB port on the board to your host machine to **power up the board**.
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3. Build the Application
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You can build a sample Zephyr application, such as **Blinky**, using the ``west`` tool.
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Run the following commands from your Zephyr workspace:
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.. code-block:: console
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west build -b pic32cx_sg41_cult -p -s samples/basic/blinky
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This will build the Blinky application for the ``pic32cx_sg41_cult`` board.
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4. Flash the Device
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Once the build completes, flash the firmware using:
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.. code-block:: console
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west flash
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This uses the default ``jlink`` runner to flash the application to the board.
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5. Observe the Result
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After flashing, **LED1** on the board should start **blinking**, indicating that the
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application is running successfully.
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References
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**********
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PIC32CX SG41 Product Page:
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https://www.microchip.com/en-us/product/PIC32CX1025SG41128
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PIC32CX SG41 Curiosity Ultra evaluation kit Page:
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https://www.microchip.com/en-us/development-tool/EV06X38A
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.. _PIC32CX SG41 Curiosity Ultra User Guide:
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https://ww1.microchip.com/downloads/aemDocuments/documents/MCU32/ProductDocuments/UserGuides/PIC32CX-SG41-SG61-Curiosity-Ultra-User-Guide-DS70005520.pdf
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.. _J-Link software:
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https://www.segger.com/downloads/jlink
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.. _J32 Debug Probe:
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https://www.microchip.com/en-us/development-tool/dv164232

‎boards/microchip/pic32c/pic32cx_sg41_cult/pic32cx_sg41_cult.dts‎

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/*
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* Copyright (c) 2025 Microchip Technology Inc.
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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 <microchip/pic32c/pic32cx_sg/pic32cx_sg41/pic32cx1025sg41128.dtsi>
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#include <zephyr/dt-bindings/input/input-event-codes.h>
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/ {
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model = "PIC32CX SG41 Curiosity Ultra";
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compatible = "microchip,pic32cx_sg41_cult";
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chosen {
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zephyr,sram = &sram0;
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zephyr,flash = &flash0;
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};
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aliases {
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led0 = &led1;
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sw0 = &button0;
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};
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leds {
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compatible = "gpio-leds";
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led1: led_1 {
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gpios = <&portc 21 GPIO_ACTIVE_LOW>;
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label = "LED1";
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};
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led2: led_2 {
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gpios = <&porta 16 GPIO_ACTIVE_LOW>;
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label = "LED2";
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};
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};
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buttons {
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compatible = "gpio-keys";
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button0: button_0 {
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gpios = <&portd 00 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
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label = "SW 1";
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zephyr,code = <INPUT_KEY_0>;
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};
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button1: button_1 {
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gpios = <&portd 01 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
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label = "SW 2";
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zephyr,code = <INPUT_KEY_1>;
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};
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};
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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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storage_partition: partition@7c000 {
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label = "storage";
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reg = <0x0007c000 0x4000>;
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};
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};
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};
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&cpu0 {
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clock-frequency = <48000000>;
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};
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&porta {
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status = "okay";
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};
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&portc {
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status = "okay";
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};
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&portd {
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status = "okay";
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};

‎boards/microchip/pic32c/pic32cx_sg41_cult/pic32cx_sg41_cult.yaml‎

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# Copyright (c) 2025 Microchip Technology Inc.
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# SPDX-License-Identifier: Apache-2.0
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identifier: pic32cx_sg41_cult
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name: PIC32CX SG41 Curiosity Ultra
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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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flash: 1024
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ram: 256
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supported:
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- gpio
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- pinctrl
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vendor: microchip

‎boards/microchip/pic32c/pic32cx_sg41_cult/pic32cx_sg41_cult_defconfig‎

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# Copyright (c) 2025 Microchip Technology Inc.
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# SPDX-License-Identifier: Apache-2.0
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CONFIG_BUILD_OUTPUT_HEX=y
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CONFIG_ARM_MPU=y

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