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boards: others: add support for the CANbardo USB to CAN adapter board
Add support for the open hardware CANbardo Universal Serial Bus (USB) to Controller Area Network (CAN) adapter board. Signed-off-by: Henrik Brix Andersen <[email protected]>
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‎boards/others/canbardo/Kconfig.canbardo‎

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# Copyright (c) 2024-2025 Henrik Brix Andersen <[email protected]>
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_CANBARDO
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select SOC_SAME70N20B

‎boards/others/canbardo/board.cmake‎

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# Copyright (c) 2024-2025 Henrik Brix Andersen <[email protected]>
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# SPDX-License-Identifier: Apache-2.0
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board_runner_args(jlink "--device=ATSAME70N20B")
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include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

‎boards/others/canbardo/board.yml‎

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board:
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name: canbardo
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full_name: CANbardo
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vendor: others
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socs:
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- name: same70n20b

‎boards/others/canbardo/canbardo-pinctrl.dtsi‎

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/*
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* Copyright (c) 2024-2025 Henrik Brix Andersen <[email protected]>
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <dt-bindings/pinctrl/same70n-pinctrl.h>
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&pinctrl {
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uart1_default: uart1_default {
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group1 {
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pinmux = <PA5C_UART1_RXD>,
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<PA4C_UART1_TXD>;
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};
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};
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can0_default: can0_default {
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group1 {
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pinmux = <PB3A_CAN0_RX>,
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<PB2A_CAN0_TX>;
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};
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};
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can1_default: can1_default {
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group1 {
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pinmux = <PD28B_CAN1_RX>,
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<PD12B_CAN1_TX>;
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};
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};
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};

‎boards/others/canbardo/canbardo.dts‎

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/*
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* Copyright (c) 2024-2025 Henrik Brix Andersen <[email protected]>
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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 <freq.h>
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#include <mem.h>
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#include <atmel/same70x20b.dtsi>
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#include <zephyr/dt-bindings/gpio/gpio.h>
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#include <zephyr/dt-bindings/input/input-event-codes.h>
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#include "canbardo-pinctrl.dtsi"
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/ {
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model = "CANbardo board";
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compatible = "canbardo", "atmel,same70n20b", "atmel,same70b";
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chosen {
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zephyr,console = &uart1;
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zephyr,shell-uart = &uart1;
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zephyr,sram = &sram0;
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zephyr,flash = &flash0;
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zephyr,code-partition = &slot0_partition;
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zephyr,canbus = &can0;
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};
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aliases {
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led0 = &dfu_led;
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sw0 = &sw;
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mcuboot-led0 = &dfu_led;
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mcuboot-button0 = &sw;
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};
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leds {
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compatible = "gpio-leds";
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dfu_led: dfu_led {
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gpios = <&piod 9 GPIO_ACTIVE_LOW>;
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label = "DFU LED";
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};
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can_0_ledr: can_0_ledr {
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gpios = <&piod 25 GPIO_ACTIVE_LOW>;
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label = "CAN0 LED ERR";
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};
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can_0_ledg: can_0_ledg {
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gpios = <&piod 22 GPIO_ACTIVE_LOW>;
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label = "CAN0 LED RDY";
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};
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can_0_ledy: can_0_ledy {
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gpios = <&piod 24 GPIO_ACTIVE_LOW>;
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label = "CAN0 LED ACT";
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};
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can_1_ledr: can_1_ledr {
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gpios = <&piod 19 GPIO_ACTIVE_LOW>;
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label = "CAN1 LED ERR";
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};
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can_1_ledg: can_1_ledg {
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gpios = <&piod 17 GPIO_ACTIVE_LOW>;
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label = "CAN1 LED RDY";
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};
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can_1_ledy: can_1_ledy {
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gpios = <&piod 18 GPIO_ACTIVE_LOW>;
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label = "CAN1 LED ACT";
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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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sw: sw {
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label = "SW";
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gpios = <&piod 15 GPIO_ACTIVE_LOW>;
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zephyr,code = <INPUT_KEY_0>;
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};
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};
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transceiver0: can-phy0 {
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compatible = "microchip,mcp2558fd", "can-transceiver-gpio";
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enable-gpios = <&piod 26 GPIO_ACTIVE_LOW>;
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max-bitrate = <8000000>;
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#phy-cells = <0>;
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};
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transceiver1: can-phy1 {
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compatible = "microchip,mcp2558fd", "can-transceiver-gpio";
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enable-gpios = <&piod 20 GPIO_ACTIVE_LOW>;
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max-bitrate = <8000000>;
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#phy-cells = <0>;
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};
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};
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&cpu0 {
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clock-frequency = <DT_FREQ_M(300)>;
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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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zephyr_udc0: &usbhs {
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status = "okay";
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};
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&can0 {
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status = "okay";
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pinctrl-0 = <&can0_default>;
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pinctrl-names = "default";
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phys = <&transceiver0>;
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};
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&can1 {
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status = "okay";
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pinctrl-0 = <&can1_default>;
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pinctrl-names = "default";
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phys = <&transceiver1>;
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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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/* First half of sector 0 */
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boot_partition: partition@0 {
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label = "mcuboot";
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reg = <0x0 DT_SIZE_K(64)>;
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read-only;
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};
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/* From sector 1 to sector 3 (included) */
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slot0_partition: partition@20000 {
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label = "image-0";
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reg = <0x00020000 DT_SIZE_K(384)>;
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};
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/* From sector 4 to sector 6 (included) */
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slot1_partition: partition@80000 {
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label = "image-1";
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reg = <0x00080000 DT_SIZE_K(384)>;
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};
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/* Sector 7 */
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storage_partition: partition@e0000 {
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label = "storage";
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reg = <0x000e0000 DT_SIZE_K(128)>;
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};
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};
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};

‎boards/others/canbardo/canbardo.yaml‎

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# Copyright (c) 2024-2025 Henrik Brix Andersen <[email protected]>
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# SPDX-License-Identifier: Apache-2.0
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identifier: canbardo/same70n20b
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name: CANbardo
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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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flash: 1024
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ram: 384
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supported:
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- can
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- gpio
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- usb
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- usb_device
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vendor: others

‎boards/others/canbardo/canbardo_defconfig‎

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# Copyright (c) 2024-2025 Henrik Brix Andersen <[email protected]>
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# SPDX-License-Identifier: Apache-2.0
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CONFIG_ARM_MPU=y
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CONFIG_CACHE_MANAGEMENT=y
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CONFIG_HW_STACK_PROTECTION=y
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CONFIG_CONSOLE=y
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CONFIG_SERIAL=y
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CONFIG_UART_CONSOLE=y

‎boards/others/canbardo/doc/canbardo.webp‎

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‎boards/others/canbardo/doc/index.rst‎

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.. zephyr:board:: canbardo
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Overview
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********
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CANbardo is an open hardware Universal Serial Bus (USB) to Controller Area Network (CAN) adapter
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board. It is designed to be compatible with the open source :ref:`external_module_cannectivity`.
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Hardware
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********
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The CANbardo board is equipped with an Atmel SAME70N20B microcontroller and features an USB-C
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connector (high-speed USB 2.0), two DB-9M connectors for CAN FD (up to 8 Mbit/s), a number of status
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LEDs, and a push button. Schematics and component placement drawings are available in the `CANbardo
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GitHub repository`_.
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Supported Features
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==================
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The ``canbardo`` board supports the following hardware features:
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+-----------+------------+-------------------------------------+
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| Interface | Controller | Driver/Component |
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+===========+============+=====================================+
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| NVIC | on-chip | nested vector interrupt controller |
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+-----------+------------+-------------------------------------+
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| PINMUX | on-chip | pinmux |
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+-----------+------------+-------------------------------------+
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| FLASH | on-chip | flash memory |
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+-----------+------------+-------------------------------------+
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| GPIO | on-chip | gpio |
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+-----------+------------+-------------------------------------+
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| USB | on-chip | USB |
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+-----------+------------+-------------------------------------+
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| UART1 | on-chip | serial console |
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+-----------+------------+-------------------------------------+
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| CAN0 | on-chip | CAN controller |
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+-----------+------------+-------------------------------------+
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| CAN1 | on-chip | CAN controller |
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+-----------+------------+-------------------------------------+
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The default configuration can be found in the defconfig file:
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:zephyr_file:`boards/others/canbardo/canbardo_defconfig`.
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Other hardware features are not currently supported by the port.
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System Clock
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============
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The SAME70N20B is driven by a 12 MHz crystal and configured to provide a system clock of 300
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MHz. The two CAN FD controllers have a core clock frequency of 80 MHz.
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Programming and Debugging
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*************************
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Build and flash applications as usual (see :ref:`build_an_application` and
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:ref:`application_run` for more details).
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Here is an example for the :zephyr:code-sample:`blinky` application.
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.. zephyr-app-commands::
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:zephyr-app: samples/basic/blinky
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:board: canbardo
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:Goals: flash
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.. _CANbardo GitHub repository:
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https://github.com/CANbardo/canbardo

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