zmk_mf68/app/boards/shields/nibble/nibble.overlay

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

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

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

	encoder_1: encoder_1 {
		compatible = "alps,ec11";
		label = "Encoder 1";
		a-gpios = <&pro_micro 9 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
		b-gpios = <&pro_micro 8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
		resolution = <4>;
		status = "okay";
	};

	kscan0: kscan {
		compatible = "zmk,kscan-gpio-demux";
		label = "KSCAN";
		polling-interval-msec = <25>;
		input-gpios
			= <&pro_micro 15 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
			, <&pro_micro 14 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
			, <&pro_micro 16 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
			, <&pro_micro 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
			, <&pro_micro 4  (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
			;
		output-gpios
			= <&pro_micro 21 GPIO_ACTIVE_HIGH>
			, <&pro_micro 20 GPIO_ACTIVE_HIGH>
			, <&pro_micro 19 GPIO_ACTIVE_HIGH>
			, <&pro_micro 18 GPIO_ACTIVE_HIGH>
			;
	};

	default_transform: keymap_transform_0 {
		compatible = "zmk,matrix-transform";
		columns = <16>;
		rows = <5>;

		map = <
        RC(0,1) RC(0,2) RC(0,3) RC(0,4) RC(0,5) RC(0,6) RC(0,7) RC(0,8) RC(0,9) RC(0,10) RC(0,11) RC(0,12) RC(0,13)  RC(0,14) RC(0,15)
RC(1,0) RC(1,1) RC(1,2) RC(1,3) RC(1,4) RC(1,5) RC(1,6) RC(1,7) RC(1,8) RC(1,9)  RC(1,10) RC(1,11) RC(1,12) RC(1,13) RC(1,14) RC(1,15)
RC(2,0) RC(2,1) RC(2,2) RC(2,3) RC(2,4) RC(2,5) RC(2,6) RC(2,7) RC(2,8) RC(2,9)  RC(2,10) RC(2,11) RC(2,12) 	     RC(2,14) RC(2,15)
RC(3,0) RC(3,1) RC(0,0) RC(3,2) RC(3,3) RC(3,4) RC(3,5) RC(3,6) RC(3,7) RC(3,8)  RC(3,9)  RC(3,10) RC(3,11) RC(3,12) RC(3,14) RC(3,15)
RC(4,0) RC(4,1) RC(4,2) RC(4,3)                 RC(4,6)                 RC(4,9)  RC(4,10) RC(4,11) RC(4,12)          RC(4,14) RC(4,15) 
		>;
	};
};

&pro_micro_i2c {
	status = "okay";

	oled: ssd1306@3c {
		compatible = "solomon,ssd1306fb";
		reg = <0x3c>;
		label = "DISPLAY";
		width = <128>;
		height = <32>;
		segment-offset = <0>;
		page-offset = <0>;
		display-offset = <0>;
		multiplex-ratio = <31>;
		com-sequential;
		prechargep = <0x22>;
	};
};