Reviung34 shield definition

app/boards/shields/reviung34/Kconfig.defconfig

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+# Copyright (c) 2023 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+if SHIELD_REVIUNG34
+
+config ZMK_KEYBOARD_NAME
+    default "REVIUNG34"
+
+endif

app/boards/shields/reviung34/Kconfig.shield

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+# Copyright (c) 2023 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+config SHIELD_REVIUNG34
+    def_bool $(shields_list_contains,reviung34)

app/boards/shields/reviung34/README.md

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+# REVIUNG34
+
+REVIUNG34 is a 33-34 key unibody split keyboard by [gtips](https://github.com/gtips). An in-stock version can be found at [Little Keyboards](https://www.littlekeyboards.com/products/reviung34-analyst-keyboard-kit).
+
+By default, the 2x1u layout is used. To use to the 1x2u layout, add the following to your keymap:
+
+```
+/ {
+    chosen {
+        zmk,matrix_transform = &single_2u_transform;
+    };
+};
+```

app/boards/shields/reviung34/boards/nice_nano_v2.overlay

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+#include <dt-bindings/led/led.h>
+
+&pinctrl {
+    spi3_default: spi3_default {
+        group1 {
+            psels = <NRF_PSEL(SPIM_MOSI, 0, 6)>;
+        };
+    };
+
+    spi3_sleep: spi3_sleep {
+        group1 {
+            psels = <NRF_PSEL(SPIM_MOSI, 0, 6)>;
+            low-power-enable;
+        };
+    };
+};
+
+&spi3 {
+    compatible = "nordic,nrf-spim";
+    status = "okay";
+
+    pinctrl-0 = <&spi3_default>;
+    pinctrl-1 = <&spi3_sleep>;
+    pinctrl-names = "default", "sleep";
+
+    led_strip: ws2812@0 {
+        compatible = "worldsemi,ws2812-spi";
+        label = "WS2812";
+
+        /* SPI */
+        reg = <0>; /* ignored, but necessary for SPI bindings */
+        spi-max-frequency = <4000000>;
+
+        /* WS2812 */
+        chain-length = <9>; /* number of LEDs */
+        spi-one-frame = <0x70>;
+        spi-zero-frame = <0x40>;
+        color-mapping = <LED_COLOR_ID_GREEN
+                         LED_COLOR_ID_RED
+                         LED_COLOR_ID_BLUE>;
+    };
+};
+
+/ {
+    chosen {
+        zmk,underglow = &led_strip;
+    };
+};

app/boards/shields/reviung34/reviung34.conf

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+# Uncomment the following lines to enable RGB underglow
+# CONFIG_ZMK_RGB_UNDERGLOW=y
+# CONFIG_WS2812_STRIP=y

app/boards/shields/reviung34/reviung34.keymap

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+/*
+ * Copyright (c) 2023 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <behaviors.dtsi>
+#include <dt-bindings/zmk/bt.h>
+#include <dt-bindings/zmk/keys.h>
+#include <dt-bindings/zmk/rgb.h>
+
+/ {
+    chosen {
+        // 34 keys.
+        zmk,matrix_transform = &dual_1u_transform;
+
+        // 33 keys. Center two thumb keys replaced by a single 2u key. Remember to adjust your
+        // keymap accordingly!
+        // zmk,matrix_transform = &single_2u_transform;
+    };
+};
+
+/ {
+    keymap {
+        compatible = "zmk,keymap";
+
+        base {
+            label = "Base";
+            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 SEMI
+&mt LSHFT Z &mt LCTRL X &mt LALT C &kp V &kp B    &kp N      &kp M       &mt RALT COMMA &mt RCTRL DOT &mt RSHFT SLASH
+                                   &kp LGUI       &lt 1 BSPC &lt 2 SPACE &mo 3
+            >;
+        };
+
+        lower {
+            label = "Lower";
+            bindings = <
+&kp EXCL &kp AT    &kp HASH &kp DLLR &kp PRCNT &kp CARET &kp AMPS  &kp ASTRK &kp LPAR &kp RPAR
+&trans   &kp TILDE &kp DQT  &kp PIPE &trans    &trans    &kp UNDER &kp PLUS  &kp LBRC &kp RBRC
+&trans   &trans    &trans   &trans   &trans    &trans    &trans    &trans    &trans   &trans
+                            &trans   &trans    &mo 4    &trans
+            >;
+        };
+
+        upper {
+            label = "Upper";
+            bindings = <
+&kp N1 &kp N2    &kp N3  &kp N4   &kp N5 &kp N6 &kp N7    &kp N8    &kp N9   &kp N0
+&trans &kp GRAVE &kp SQT &kp BSLH &trans &trans &kp MINUS &kp EQUAL &kp LBKT &kp RBKT
+&trans &trans    &trans  &trans   &trans &trans &trans    &trans    &trans   &trans
+                         &trans   &mo 4  &trans  &trans
+            >;
+        };
+
+        function {
+            label = "Function";
+            bindings = <
+&kp TAB &trans       &kp C_VOL_UP &trans       &trans    &trans &trans   &trans   &trans &kp ENTER
+&kp ESC &kp C_BRI_DN &kp C_VOL_DN &kp C_BRI_UP &trans    &trans &kp LEFT &kp DOWN &kp UP &kp RIGHT
+&trans  &trans       &trans       &trans       &trans    &trans &trans   &trans   &trans &trans
+                                  &trans       &kp C_PWR &trans &trans
+            >;
+        };
+
+        meta {
+            label = "Meta";
+            bindings = <
+&rgb_ug RGB_HUI &rgb_ug RGB_SAI &rgb_ug RGB_BRI &rgb_ug RGB_SPI &rgb_ug RGB_EFF &none        &none        &none        &none        &none
+&rgb_ug RGB_HUD &rgb_ug RGB_SAD &rgb_ug RGB_BRD &rgb_ug RGB_SPD &rgb_ug RGB_EFR &bt BT_SEL 0 &bt BT_SEL 1 &bt BT_SEL 2 &bt BT_SEL 3 &bt BT_SEL 4
+&none           &none           &rgb_ug RGB_TOG &none           &none           &none        &none        &bt BT_CLR   &none        &none
+                                &none           &trans          &trans          &none
+            >;
+        };
+    };
+};

app/boards/shields/reviung34/reviung34.overlay

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+/*
+ * Copyright (c) 2023 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <dt-bindings/zmk/matrix_transform.h>
+
+/ {
+    chosen {
+        zmk,kscan = &kscan0;
+        zmk,matrix_transform = &dual_1u_transform;
+    };
+
+    dual_1u_transform: keymap_transform_0 {
+        compatible = "zmk,matrix-transform";
+        columns = <9>;
+        rows = <4>;
+        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(3,5)
+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(3,6)
+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(3,7)
+                        RC(3,2) RC(3,3) RC(3,4) RC(3,8)
+        >;
+    };
+
+    single_2u_transform: keymap_transform_1 {
+        compatible = "zmk,matrix-transform";
+        columns = <9>;
+        rows = <4>;
+        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(3,5)
+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(3,6)
+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(3,7)
+                            RC(3,2) RC(3,4) RC(3,8)
+        >;
+    };
+
+    kscan0: kscan_0 {
+        compatible = "zmk,kscan-gpio-matrix";
+        label = "KSCAN";
+        diode-direction = "col2row";
+
+        col-gpios
+            = <&pro_micro 4 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 5 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 6 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 7 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 8 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 15 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 14 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 16 GPIO_ACTIVE_HIGH>
+            , <&pro_micro 10 GPIO_ACTIVE_HIGH>
+            ;
+
+        row-gpios
+            = <&pro_micro 21 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            , <&pro_micro 20 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            , <&pro_micro 19 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            , <&pro_micro 18 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            ;
+    };
+};

app/boards/shields/reviung34/reviung34.zmk.yml

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+file_format: "1"
+id: reviung34
+name: REVIUNG34
+type: shield
+url: https://github.com/gtips/reviung/tree/master/reviung34
+requires: [pro_micro]
+features:
+  - keys
+  - underglow