add xmkb shield and default keymap

app/boards/shields/xmkb/Kconfig.defconfig

@@ -0,0 +1,15 @@
+if SHIELD_XMKB_LEFT
+
+config ZMK_KEYBOARD_NAME
+    default "xmkb"
+
+config ZMK_SPLIT_ROLE_CENTRAL
+    default y
+endif
+
+if SHIELD_XMKB_LEFT || SHIELD_XMKB_RIGHT
+
+config ZMK_SPLIT
+    default y
+
+endif

app/boards/shields/xmkb/Kconfig.shield

@@ -0,0 +1,5 @@
+config SHIELD_XMKB_LEFT
+    def_bool $(shields_list_contains,xmkb_left)
+
+config SHIELD_XMKB_RIGHT
+    def_bool $(shields_list_contains,xmkb_right)

app/boards/shields/xmkb/xmkb.dtsi

@@ -0,0 +1,42 @@
+#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 = <10>;
+        rows = <5>;
+
+        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(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(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(3,1) RC(3,2) RC(3,3) RC(3,4)                       RC(3,7) RC(3,8) 
+        >;
+        
+    };
+
+    kscan0: kscan {
+        compatible = "zmk,kscan-gpio-matrix";
+        label = "KSCAN";
+
+        diode-direction = "col2row";
+    };
+
+    left_encoder: encoder_left {
+        compatible = "alps,ec11";
+        label = "LEFT_ENCODER";
+		status = "disabled";
+    };
+
+    sensors {
+		compatible = "zmk,keymap-sensors";
+		sensors = <&left_encoder>;
+	};
+
+};

app/boards/shields/xmkb/xmkb.keymap

@@ -0,0 +1,42 @@
+#include <behaviors.dtsi>
+#include <dt-bindings/zmk/keys.h>
+
+#define DEF 0
+#define LOW 1
+#define HIGH 2
+
+/ {
+    keymap {
+        compatible = "zmk,keymap";
+
+        default_layer {
+            bindings = <
+&kp Q       &kp W       &kp E       &kp R       &kp T               &kp Y       &kp U       &kp I       &kp O       &kp P
+&kp A       &kp S       &kp D       &kp F       &kp G               &kp H       &kp J       &kp K       &kp L       &kp ENTER
+&kp ESC     &kp Z       &kp X       &kp C       &kp V               &kp B       &kp N       &kp M       &kp COMMA   &kp DOT
+            &kp LCTRL &lt LOW SPACE &kp LSHIFT  &kp LMETA                                 &lt HIGH BSPC &kp LALT
+            >;
+            sensor-bindings = <&inc_dec_kp C_VOL_UP C_VOL_DN>;
+        };
+
+        low_layer {
+            bindings = <
+&kp N1      &kp N2      &kp N3      &kp N4      &kp N5              &kp N6      &kp N7      &kp N8      &kp N9      &kp N0
+&trans      &trans      &kp LBKT    &kp RBKT    &kp INS             &kp PG_UP   &kp EQUAL   &kp MINUS   &kp TAB     &trans
+&trans      &kp GRAVE   &kp BSLH    &kp FSLH    &kp DEL             &kp PG_DN   &kp SEMI    &kp SQT     &kp HOME    &kp END
+            &trans      &trans      &trans      &trans                                      &trans      &trans  
+            >;
+            sensor-bindings = <&inc_dec_kp C_AC_SCROLL_UP C_AC_SCROLL_DOWN>;
+        };
+
+        high_layer {
+            bindings = <
+&trans      &kp UP      &kp K_PREV  &kp K_PP    &kp K_NEXT          &kp F1      &kp F2      &kp F3      &kp F4      &trans  
+&kp LEFT    &kp DOWN    &kp RIGHT   &trans      &trans              &kp F5      &kp F6      &kp F7      &kp F8      &trans 
+&trans      &trans      &kp PSCRN   &kp SLCK    &kp PAUSE_BREAK     &kp F9      &kp F10     &kp F11     &kp F12     &trans  
+            &trans      &trans      &trans      &trans                                      &trans      &trans  
+            >;
+            sensor-bindings = <&inc_dec_kp C_BRI_INC C_BRI_DEC>;
+        };
+    };
+};

app/boards/shields/xmkb/xmkb.zmk.yml

@@ -0,0 +1,12 @@
+file_format: "1"
+id: xmkb
+name: xmkb
+type: shield
+url: https://git.xenua.me/xenua/xmkb
+requires:
+  - pro_micro
+features:
+  - keys
+siblings:
+  - xmkb_left
+  - xmkb_right

app/boards/shields/xmkb/xmkb_left.conf

@@ -0,0 +1,3 @@
+# Uncomment to enable encoder
+# CONFIG_EC11=y
+# CONFIG_EC11_TRIGGER_GLOBAL_THREAD=y

app/boards/shields/xmkb/xmkb_left.overlay

@@ -0,0 +1,23 @@
+#include "xmkb.dtsi"
+
+&kscan0 {
+    row-gpios
+        = <&pro_micro 2 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)> // top
+        , <&pro_micro 3 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)> // home
+        , <&pro_micro 4 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)> // bot
+        , <&pro_micro 5 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)> // thumb
+        ;
+    col-gpios
+        = <&pro_micro 21 (GPIO_ACTIVE_HIGH)> // l pinky
+        , <&pro_micro 20 (GPIO_ACTIVE_HIGH)> // l ring
+        , <&pro_micro 19 (GPIO_ACTIVE_HIGH)> // l middle
+        , <&pro_micro 1  (GPIO_ACTIVE_HIGH)> // l index
+        , <&pro_micro 0  (GPIO_ACTIVE_HIGH)> // l inner
+        ;
+};
+
+&left_encoder {
+    a-gpios = <&pro_micro 14 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
+    b-gpios = <&pro_micro 15 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
+    status = "okay";
+};

app/boards/shields/xmkb/xmkb_right.overlay

@@ -0,0 +1,21 @@
+#include "xmkb.dtsi"
+
+&kscan0 {
+    row-gpios
+        = <&pro_micro 21 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)> // top
+        , <&pro_micro 20 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)> // home
+        , <&pro_micro 19 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)> // bot
+        , <&pro_micro 9  (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)> // thumb
+        ;
+    col-gpios
+        = <&pro_micro 15 (GPIO_ACTIVE_HIGH)> // r inner
+        , <&pro_micro 18 (GPIO_ACTIVE_HIGH)> // r index
+        , <&pro_micro 14 (GPIO_ACTIVE_HIGH)> // r middle
+        , <&pro_micro 16 (GPIO_ACTIVE_HIGH)> // r ring
+        , <&pro_micro 10 (GPIO_ACTIVE_HIGH)> // r pinky
+        ;
+};
+
+&default_transform {
+    col-offset = <5>;
+};