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

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

/ {
    chosen {
        zephyr,display = &oled;
        zmk,kscan = &kscan0;
        zmk,matrix-transform = &default_transform;
    };

    default_transform: keymap_transform_0 {
        compatible = "zmk,matrix-transform";
        columns = <12>;
        rows = <4>;
// | SW1  | SW2  | SW3  | SW4  | SW5  | SW6  |   | SW6  | SW5  | SW4  | SW3  | SW2  | SW1  |
// | SW7  | SW8  | SW9  | SW10 | SW11 | SW12 |   | SW12 | SW11 | SW10 | SW9  | SW8  | SW7  |
// | SW13 | SW14 | SW15 | SW16 | SW17 | SW18 |   | SW18 | SW17 | SW16 | SW15 | SW14 | SW13 |
//                      | SW19 | SW20 | SW21 |   | SW21 | SW20 | SW19 |
        map = <
RC(0,0) 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(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(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(3,3) RC(3,4) RC(3,5)  RC(3,6) RC(3,7) RC(3,8)
        >;
    };

    five_column_transform: keymap_transform_1 {
        compatible = "zmk,matrix-transform";
        columns = <10>;
        rows = <4>;
// | SW2  | SW3  | SW4  | SW5  | SW6  |   | SW6  | SW5  | SW4  | SW3  | SW2  |
// | SW8  | SW9  | SW10 | SW11 | SW12 |   | SW12 | SW11 | SW10 | SW9  | SW8  |
// | SW14 | SW15 | SW16 | SW17 | SW18 |   | SW18 | SW17 | SW16 | SW15 | SW14 |
//                      | SW19 | SW20 | SW21 |   | SW21 | SW20 | SW19 |
        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(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(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(3,3) RC(3,4) RC(3,5)  RC(3,6) RC(3,7) RC(3,8)
        >;
    };

    kscan0: kscan {
        compatible = "zmk,kscan-gpio-matrix";
        wakeup-source;

        diode-direction = "col2row";
        row-gpios
            = <&pro_micro 4 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
            , <&pro_micro 5 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
            , <&pro_micro 6 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
            , <&pro_micro 7 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
            ;

    };

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

&pro_micro_i2c {
    status = "okay";

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