zmk_mf68/app/boards/shields/romac_plus/romac_plus.dtsi

/*
 * Copyright (c) 2020 The ZMK Contributors
 *
 * SPDX-License-Identifier: MIT
 */

#include <dt-bindings/zmk/matrix_transform.h>

/ {
	chosen {
		zmk,kscan = &kscan0;
		zmk,matrix_transform = &default_transform;
	};

	default_transform: keymap_transform_0 {
		compatible = "zmk,matrix-transform";
		columns = <3>;
		rows = <4>;

		map = <
RC(0,0) RC(0,1) RC(0,2)
RC(1,0) RC(1,1) RC(1,2)
RC(2,0) RC(2,1) RC(2,2)
RC(3,0) RC(3,1) RC(3,2)
		>;
	};

	kscan0: kscan {
		compatible = "zmk,kscan-gpio-matrix";
		label = "KSCAN";

		diode-direction = "col2row";
		row-gpios
			= <&pro_micro 5 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
			, <&pro_micro 4 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
			, <&pro_micro 0 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
			, <&pro_micro 1 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
			;
	};

	left_encoder: encoder_left {
		compatible = "alps,ec11";
		label = "LEFT_ENCODER";
		a-gpios = <&pro_micro 16 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
		b-gpios = <&pro_micro 14 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
		resolution = <4>;
		status = "disabled";
	};

	sensors {
		compatible = "zmk,keymap-sensors";
		sensors = <&left_encoder>;
	};

	// TODO: per-key RGB node(s)?
};