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board: samc21: add support for SAMC21N Xplained Pro Board
Add basic support board with SAMC21N soc including SPI, UART, I2C, ADC, Flash, Leds. Signed-off-by: Kamil Serwus <[email protected]>
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‎boards/arm/atsamc21n_xpro/Kconfig.board‎

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# SAM C21N Xplained Pro Board configuration
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# Copyright (c) 2022 Kamil Serwus
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_ATSAMC21N_XPRO
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bool "SAM C21N Xplained Pro"
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depends on SOC_PART_NUMBER_SAMC21N18A

‎boards/arm/atsamc21n_xpro/Kconfig.defconfig‎

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# SAM C21N Xplained Pro board configuration
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# Copyright (c) 2022 Kamil Serwus
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# SPDX-License-Identifier: Apache-2.0
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config BOARD
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default "atsamc21n_xpro"
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depends on BOARD_ATSAMC21N_XPRO

‎boards/arm/atsamc21n_xpro/atsamc21n_xpro-pinctrl.dtsi‎

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/*
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* Copyright (c) 2022 Kamil Serwus
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <dt-bindings/pinctrl/samc21n-pinctrl.h>
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&pinctrl {
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pwm_default: pwm_default {
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group1 {
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pinmux = <PC5F_TCC2_WO1>;
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};
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};
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adc0_default: adc0_default {
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group1 {
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pinmux = <PB9B_ADC0_AIN3>;
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};
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};
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adc1_default: adc1_default {
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group1 {
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pinmux = <PA8B_ADC1_AIN10>;
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};
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};
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sercom0_uart_default: sercom0_uart_default {
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group1 {
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pinmux = <PB25C_SERCOM0_PAD1>,
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<PB24C_SERCOM0_PAD0>;
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};
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};
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sercom1_i2c_default: sercom1_i2c_default {
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group1 {
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pinmux = <PA16C_SERCOM1_PAD0>,
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<PA17C_SERCOM1_PAD1>;
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};
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};
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sercom2_uart_default: sercom1_uart_default {
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group1 {
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pinmux = <PA13C_SERCOM2_PAD1>,
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<PA12C_SERCOM2_PAD0>;
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};
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};
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sercom4_uart_default: sercom4_uart_default {
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group1 {
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pinmux = <PB11D_SERCOM4_PAD3>,
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<PB10D_SERCOM4_PAD2>;
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};
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};
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sercom5_spi_default: sercom5_spi_default {
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group1 {
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pinmux = <PB0D_SERCOM5_PAD2>,
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<PB2D_SERCOM5_PAD0>,
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<PB1D_SERCOM5_PAD3>;
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};
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};
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};

‎boards/arm/atsamc21n_xpro/atsamc21n_xpro.dts‎

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/*
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* Copyright (c) 2022 Kamil Serwus
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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 <atmel/samc21x18.dtsi>
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#include "atsamc21n_xpro-pinctrl.dtsi"
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/ {
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model = "SAM C21N Xplained Pro";
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compatible = "atsamc21n,xpro", "atmel,samc21n18a", "atmel,samc21";
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chosen {
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zephyr,console = &sercom4;
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zephyr,shell-uart = &sercom4;
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zephyr,sram = &sram0;
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zephyr,flash = &flash0;
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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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pwm-led0 = &pwm_led0;
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sw0 = &user_button;
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i2c-0 = &sercom1;
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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 = <&portc 05 GPIO_ACTIVE_LOW>;
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label = "Yellow LED";
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};
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};
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pwmleds {
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compatible = "pwm-leds";
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pwm_led0: pwm_led_0 {
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pwms = <&tcc2 1 PWM_MSEC(20)>;
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};
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};
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buttons {
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compatible = "gpio-keys";
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user_button: button_0 {
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gpios = <&portb 19 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
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label = "User Button";
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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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&adc0 {
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status = "okay";
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pinctrl-0 = <&adc0_default>;
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pinctrl-names = "default";
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};
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&adc1 {
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pinctrl-0 = <&adc1_default>;
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pinctrl-names = "default";
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};
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&tcc2 {
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status = "okay";
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compatible = "atmel,sam0-tcc-pwm";
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prescaler = <256>;
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#pwm-cells = <2>;
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pinctrl-0 = <&pwm_default>;
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pinctrl-names = "default";
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};
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&sercom0 {
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status = "okay";
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compatible = "atmel,sam0-uart";
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current-speed = <9600>;
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rxpo = <1>;
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txpo = <0>;
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pinctrl-0 = <&sercom0_uart_default>;
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pinctrl-names = "default";
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};
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&sercom1 {
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status = "okay";
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compatible = "atmel,sam0-i2c";
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clock-frequency = <I2C_BITRATE_FAST>;
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#address-cells = <1>;
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#size-cells = <0>;
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pinctrl-0 = <&sercom1_i2c_default>;
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pinctrl-names = "default";
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};
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&sercom2 {
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status = "okay";
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compatible = "atmel,sam0-uart";
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current-speed = <115200>;
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rxpo = <1>;
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txpo = <0>;
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pinctrl-0 = <&sercom2_uart_default>;
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pinctrl-names = "default";
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};
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&sercom4 {
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status = "okay";
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compatible = "atmel,sam0-uart";
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current-speed = <115200>;
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rxpo = <3>;
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txpo = <1>;
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pinctrl-0 = <&sercom4_uart_default>;
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pinctrl-names = "default";
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};
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&sercom5 {
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status = "okay";
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compatible = "atmel,sam0-spi";
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dipo = <0>;
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dopo = <2>;
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#address-cells = <1>;
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#size-cells = <0>;
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pinctrl-0 = <&sercom5_spi_default>;
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pinctrl-names = "default";
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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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/*
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* The final 16 KiB is reserved for the application.
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* Storage partition will be used by FCB/LittleFS/NVS
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* if enabled.
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*/
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storage_partition: partition@3c000 {
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label = "storage";
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reg = <0x0003c000 0x00004000>;
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};
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};
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};

‎boards/arm/atsamc21n_xpro/atsamc21n_xpro.yaml‎

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# Copyright (c) 2022 Kamil Serwus
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# SPDX-License-Identifier: Apache-2.0
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identifier: atsamc21n_xpro
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name: SAM C21N Xplained Pro
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type: mcu
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arch: arm
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ram: 32
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flash: 256
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toolchain:
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- zephyr
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- gnuarmemb
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- xtools
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supported:
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- adc
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- gpio
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- i2c
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- pwm
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- spi

‎boards/arm/atsamc21n_xpro/atsamc21n_xpro_defconfig‎

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# Copyright (c) 2022 Kamil Serwus
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# SPDX-License-Identifier: Apache-2.0
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CONFIG_SOC_SERIES_SAMC21=y
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CONFIG_SOC_PART_NUMBER_SAMC21N18A=y
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CONFIG_BOARD_ATSAMC21N_XPRO=y
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CONFIG_BUILD_OUTPUT_HEX=y
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CONFIG_CONSOLE=y
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CONFIG_UART_CONSOLE=y
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CONFIG_SERIAL=y
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CONFIG_UART_INTERRUPT_DRIVEN=y
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CONFIG_GPIO=y

‎boards/arm/atsamc21n_xpro/board.cmake‎

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# Copyright (c) 2022 Kamil Serwus
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# SPDX-License-Identifier: Apache-2.0
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include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)

‎boards/arm/atsamc21n_xpro/doc/img/atsamc21n_xpro.jpg‎

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