first files set up

boards/shields/alphalpha_plus/Kconfig.defconfig

@@ -0,0 +1,9 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+if SHIELD_ALPHALPHA_PLUS
+
+config ZMK_KEYBOARD_NAME
+    default "Alphalpha+"
+
+endif

boards/shields/alphalpha_plus/Kconfig.shield

@@ -0,0 +1,5 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+config SHIELD_ALPHALPHA_PLUS
+   def_bool $(shields_list_contains,alphalpha_plus)

boards/shields/alphalpha_plus/alphalpha_plus.keymap

@@ -0,0 +1,21 @@
+#include <behaviors.dtsi>
+#include <dt-bindings/zmk/keys.h>
+
+/ {
+    keymap {
+        compatible = "zmk,keymap";
+
+        default_layer {
+// |    Q    |    W    |    E    |    R    |    T    |    Y    |    U    |    I    |    O    |    P    |
+// |    A    |    S    |    D    |    F    |    G    |    H    |    J    |    K    |    L    |    '    |
+//      |    Z    |    X    |    C    |    V    |    B    |    N    |    M    |    ,    |    .    |
+//                     |  TAB  |        SPACE        |        BSPC       |   DEL   |
+            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 SQUOT
+        &kp Z    &kp X    &kp C     &kp V     &kp B     &kp N     &kp M     &kp COMMA &kp DOT
+                                 &kp TAB &kp SPACE   &kp BSPC  &kp RALT
+            >;
+        };
+    };
+};

boards/shields/alphalpha_plus/alphalpha_plus.overlay

@@ -0,0 +1,46 @@
+/ {
+        chosen {
+        zmk,kscan = &kscan0;
+        zmk,matrix_transform = &default_transform;
+    };
+
+    default_transform: keymap_transform_0 {
+        compatible = "zmk,matrix-transform";
+        columns = <5>;
+        rows = <8>;
+        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(2,1) 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(3,2) RC(3,4) RC(3,6) RC(3,8)
+        >;
+    };
+
+    kscan0: kscan_0 {
+        compatible = "zmk,kscan-gpio-matrix";
+        diode-direction = "row2col";
+        wakeup-source;
+
+        col-gpios
+            = <&pro_micro 2 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 3 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 4 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 5 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 10 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 16 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 14 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 15 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 18 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 19 GPIO_ACTIVE_HIGH>
+            ;
+
+        row-gpios
+            = <&pro_micro 6 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            , <&pro_micro 9 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            , <&pro_micro 8 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            , <&pro_micro 7 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            ;
+    };
+};
+
+K302, K303, K304, K305, K306, K307, K308

boards/shields/alphalpha_plus/alphalpha_plus.zmk.yml

@@ -0,0 +1,9 @@
+file_format: "1"
+id: alphalpha_plus
+name: Alphalpha+
+type: shield
+url: https://github.com/subottimale/alphalpha_plus/
+requires: [pro_micro]
+exposes: [i2c_oled]
+features:
+  - keys

build.yaml

@@ -17,3 +17,6 @@
 #     artifact-name: corne_left_with_logging
 #
 ---
+include:
+  - board: nice_nano_v2
+    shield: alphalpha_plus