zmk/app/boards/arm/proton_c/arduino_pro_micro_pins.dtsi

/*
 * Copyright (c) 2020 Pete Johanson
 *
 * SPDX-License-Identifier: MIT
 */

/ {
	pro_micro_pins: connector {
		compatible = "arduino-pro-micro";
		#gpio-cells = <2>;
		gpio-map-mask = <0xffffffff 0xffffffc0>;
		gpio-map-pass-thru = <0 0x3f>;
		gpio-map =
			/* Down the front left side */
			<1 0 &gpioa 9 0>,	/* D1 */
			<0 0 &gpioa 10 0>,	/* D0 */
			<2 0 &gpiob 7 0>,	/* D2 */
			<3 0 &gpiob 6 0>,	/* D3 */
			<4 0 &gpiob 5 0>,	/* D4/A6 */
			<5 0 &gpiob 4 0>,	/* D5 */
			<6 0 &gpiob 3 0>,	/* D6/A7 */
			<7 0 &gpiob 2 0>,	/* D7 */
			<8 0 &gpiob 1 0>,	/* D8/A8 */
			<9 0 &gpiob 0 0>,	/* D9/A9 */

			/* Back up the front right side */
			<10 0 &gpiob 9 0>,	/* D10/A10 */
			<16 0 &gpiob 15 0>,	/* D16 */
			<14 0 &gpiob 14 0>,	/* D14 */
			<15 0 &gpiob 13 0>,	/* D15 */
			<18 0 &gpiob 8 0>,	/* A0 */
			<19 0 &gpioa 0 0>,	/* A1 */
			<20 0 &gpioa 1 0>,	/* A2 */
			<21 0 &gpioa 2 0>;	/* A3 */
	};
};

pro_micro_i2c: &i2c1 {};
pro_micro_spi: &spi1 {};
pro_micro_serial: &usart1 {};