Romac (#1)

* New shield: romac 2.1

app/boards/shields/romac/Kconfig.defconfig

@@ -0,0 +1,8 @@
+
+if SHIELD_ROMAC
+
+config ZMK_KEYBOARD_NAME
+	default "romac"
+
+endif
+

app/boards/shields/romac/Kconfig.shield

@@ -0,0 +1,5 @@
+# Copyright (c) 2020 Pete Johansen, Richard Jones
+# SPDX-License-Identifier: MIT
+
+config SHIELD_ROMAC
+	def_bool $(shields_list_contains,romac)

app/boards/shields/romac/boards/nice_nano.overlay

@@ -0,0 +1,10 @@
+&spi1 {
+	compatible = "nordic,nrf-spi";
+	/* Cannot be used together with i2c0. */
+	status = "okay";
+	sck-pin = <5>;
+	mosi-pin = <6>;
+	miso-pin = <7>;
+
+};
+

app/boards/shields/romac/romac.conf

@@ -0,0 +1,2 @@
+CONFIG_ZMK_RGB_UNDERGLOW=n
+CONFIG_WS2812_STRIP=n

app/boards/shields/romac/romac.dtsi

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2020 Pete Johansen, Richard Jones
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#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 = <3>;
+		rows = <4>;
+// | SW1  | SW2  | SW3  |
+// | SW4  | SW5  | SW6  |
+// | SW7  | SW8  | SW9  |
+// | SW10 | SW11 | SW12 |
+		map = <
+RC(0,0) RC(0,1) RC(0,2)
+RC(1,0) RC(1,1) RC(1,2)
+RC(2,0) RC(2,1) RC(2,2)
+RC(3,0) RC(3,1) RC(3,2)
+		>;
+	};
+
+	kscan0: kscan {
+		compatible = "zmk,kscan-gpio-matrix";
+		label = "KSCAN";
+
+		diode-direction = "col2row";
+		row-gpios
+			= <&pro_micro_d 4 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+			, <&pro_micro_d 5 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+			, <&pro_micro_d 6 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+			, <&pro_micro_d 7 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+			;
+
+	};
+
+	bt_unpair_combo: bt_unpair_combo {
+		compatible = "zmk,bt-unpair-combo";
+	};
+
+};
+

app/boards/shields/romac/romac.keymap

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+#include <behaviors.dtsi>
+#include <dt-bindings/zmk/keys.h>
+
+/ {
+    keymap {
+        compatible = "zmk,keymap";
+        
+        default_layer {
+// -------------------
+// | 7      |  8  |  9  |
+// | 4      |  5  |  6  |
+// | 1      |  2  |  3  |
+// | MO(1)  |  0  |  .  |
+// ----------------------
+            bindings = <
+    &kp NUM_7 &kp NUM_8 &kp NUM_9 
+    &kp NUM_4 &kp NUM_5 &kp NUM_6 
+    &kp NUM_1 &kp NUM_2 &kp NUM_3 
+    &mo 1     &kp NUM_0 &kp DOT 
+            >;
+        };
+
+        nav_layer {
+// -----------------------
+// | _ |  HOME  |  PGUP  |
+// | _ |  END   |  PGDN  |
+// | _ |  _     |  _     |
+// | _ |  _     |  RET   |
+// -----------------------
+            bindings = <
+    &trans &kp HOME &kp PGUP 
+    &trans &kp END  &kp PGDN 
+    &trans &trans   &trans 
+    &trans &trans   &kp RET
+            >;
+        };
+    };
+};
+
+

app/boards/shields/romac/romac.overlay

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2020 Pete Johansen, Richard Jones
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "romac.dtsi"
+
+&kscan0 {
+    col-gpios
+        = <&pro_micro_a  0 GPIO_ACTIVE_HIGH>
+        , <&pro_micro_d 15 GPIO_ACTIVE_HIGH>
+        , <&pro_micro_d 14 GPIO_ACTIVE_HIGH>
+        ;
+};
+
+&bt_unpair_combo {
+    key-positions = <0 11>;
+};