1#include <dt-bindings/zmk/matrix_transform.h>
 2
 3/ {
 4    chosen {
 5        zephyr,display = &oled;
 6        zmk,kscan = &kscan0;
 7        zmk,matrix_transform = &default_transform;
 8    };
 9
10    default_transform: keymap_transform_0 {
11		compatible = "zmk,matrix-transform";
12        columns = <12>;
13        rows = <4>;
14
15        map = <
16            RC(0,0) RC(0,1) RC(0,2) RC(0,3) RC(0,4) RC(0,5)                      RC(0,11) RC(0,10) RC(0,9) RC(0,8) RC(0,7) RC(0,6)
17            RC(1,0) RC(1,1) RC(1,2) RC(1,3) RC(1,4) RC(1,5)                      RC(1,11) RC(1,10) RC(1,9) RC(1,8) RC(1,7) RC(1,6)
18            RC(2,0) RC(2,1) RC(2,2) RC(2,3) RC(2,4) RC(2,5)                      RC(2,11) RC(2,10) RC(2,9) RC(2,8) RC(2,7) RC(2,6)
19                    RC(3,1) RC(3,2) RC(3,3) RC(3,4) RC(3,5)                      RC(3,11) RC(3,10)                 RC(3,7)
20        >;
21    };
22	
23    kscan0: kscan {
24        compatible = "zmk,kscan-gpio-matrix";
25        label = "KSCAN";
26
27        diode-direction = "col2row";
28		row-gpios
29			= <&pro_micro 21 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
30			, <&pro_micro 20 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
31			, <&pro_micro 19 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
32			, <&pro_micro 18 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
33            ;
34    };
35};    
36
37&pinctrl {
38    i2c0_default: i2c0_default {
39        group1 {
40            psels = <NRF_PSEL(TWIM_SDA, 0, 17)>,
41                    <NRF_PSEL(TWIM_SCL, 0, 20)>;
42        };
43    };
44
45    i2c0_sleep: i2c0_sleep {
46        group1 {
47            psels = <NRF_PSEL(TWIM_SDA, 0, 17)>,
48                    <NRF_PSEL(TWIM_SCL, 0, 20)>;
49            low-power-enable;
50        };
51    };
52};
53
54&i2c0 {
55    status = "okay";
56    compatible = "nordic,nrf-twi";
57    pinctrl-0 = <&i2c0_default>;
58    pinctrl-1 = <&i2c0_sleep>;
59    pinctrl-names = "default", "sleep";
60
61    oled: ssd1306@3c {
62        compatible = "solomon,ssd1306fb";
63        reg = <0x3c>;
64        width = <128>;
65        height = <32>;
66        segment-offset = <0>;
67        page-offset = <0>;
68        display-offset = <0>;
69        multiplex-ratio = <31>;
70        segment-remap;
71        com-invdir;
72        com-sequential;
73        inversion-on;
74        prechargep = <0x22>;
75    };
76};