The inaugural commit for Leeloo's firmware.

app/boards/shields/leeloo/Kconfig.defconfig

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+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+if SHIELD_LEELOO_LEFT
+
+config ZMK_KEYBOARD_NAME
+	default "Leeloo"
+
+config ZMK_SPLIT_BLE_ROLE_CENTRAL
+	default y
+	
+endif
+
+if SHIELD_LEELOO_LEFT || SHIELD_LEELOO_RIGHT
+
+config ZMK_SPLIT
+	default y
+
+if ZMK_DISPLAY
+
+config I2C
+	default y
+
+config SSD1306
+	default y
+
+config SSD1306_REVERSE_MODE
+	default y
+
+endif # ZMK_DISPLAY
+
+if LVGL
+
+config LVGL_HOR_RES_MAX
+	default 128
+
+config LVGL_VER_RES_MAX
+	default 32
+
+config LVGL_VDB_SIZE
+	default 64
+
+config LVGL_DPI
+	default 148
+
+config LVGL_BITS_PER_PIXEL
+	default 1
+
+choice LVGL_COLOR_DEPTH
+	default LVGL_COLOR_DEPTH_1
+endchoice
+
+endif # LVGL
+
+endif

app/boards/shields/leeloo/Kconfig.shield

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+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+config SHIELD_LEELOO_LEFT
+	def_bool $(shields_list_contains,leeloo_left)
+
+config SHIELD_LEELOO_RIGHT
+	def_bool $(shields_list_contains,leeloo_right)

app/boards/shields/leeloo/README.md

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+# Clickety Split | Leeloo
+
+![Leeloo](https://cdn.shopify.com/s/files/1/0599/3460/5491/files/Leeloo-rev1.0-w.jpg?v=1646798726)
+
+Keyboard Designer: [clicketysplit.ca](https://clicketysplit.ca)
+GitHub: [ClicketySplit](https://github.com/ClicketySplit)
+Hardware Supported: Pro Micro, Elite-C, nice!nano v2
+
+Albeit, there is no doubt where Leeloo's heritage is derived from—Lily58, and Corne.  It is not a copy-paste-modify implementation.
+
+Leeloo has been designed from scratch; everything from the schematic to its PCB footprints, and column stagger. There are some subtle differences that may not be apparent; however, its subtle changes enable an interesting future.
+
+Features:
+* 4x6x5m Split Keyboard
+* Support for MX/Box or Low Profile Choc switches.
+* 90% of the switches are socketed; with the exception to the rotary encoder positions—6 positions require soldering.
+* Support for 128x32 OLED Displays.
+* The option to select one of three positions for an EC11 rotary encoder on each half.
+* Support for Alps Alpine Micro Switch
+* Support for 3.7v 301230 LiPo Battery
+
+# Building Your Firmware
+ZMK Firmware: [Introduction to ZMK](https://zmk.dev/docs/)
+Installation: [Installing ZMK](https://zmk.dev/docs/user-setup)
+Customization: [Customizing ZMK](https://zmk.dev/docs/customization)
+Development Environment: [Basic Setup](https://zmk.dev/docs/development/setup)
+
+Build command for the default keymap of Leeloo:
+
+    west build -d build/left -p -b nice_nano_v2 -- -DSHIELD=leeloo_left
+    west build -d build/right -p -b nice_nano_v2 -- -DSHIELD=leeloo_right
+
+Build command for your custom keymap of Leeloo:
+
+    west build -d build/right -p -b nice_nano_v2 -- -DSHIELD=leeloo_right -DZMK_CONFIG="C:\dev\zmk\[yourNmae]\leeloo\config"
+    west build -d build/left -p -b nice_nano_v2 -- -DSHIELD=leeloo_left -DZMK_CONFIG="C:\dev\zmk\[yourName]\leeloo\config"
+
+# Support
+If you have any questions with regards to Leeloo, please [Contact Us](https://clicketysplit.ca/pages/contact-us).
+
+Clickety Split
+For the love of split keyboards.

app/boards/shields/leeloo/boards/nice_nano.overlay

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+&spi1 {
+	compatible = "nordic,nrf-spim";
+	/* Cannot be used together with i2c0. */
+	status = "okay";
+	mosi-pin = <6>;
+	// Unused pins, needed for SPI definition, but not used by the ws2812 driver itself.
+	sck-pin = <5>;
+	miso-pin = <7>;
+
+	led_strip: ws2812@0 {
+		compatible = "worldsemi,ws2812-spi";
+		label = "SK6812mini";
+
+		/* SPI */
+		reg = <0>; /* ignored, but necessary for SPI bindings */
+		spi-max-frequency = <4000000>;
+
+		/* WS2812 */
+		chain-length = <6>; /* There are per-key RGB, but the first 6 are underglow */
+		spi-one-frame = <0x70>;
+		spi-zero-frame = <0x40>;
+	};
+};
+
+/ {
+	chosen {
+		zmk,underglow = &led_strip;
+	};
+};

app/boards/shields/leeloo/leeloo.conf

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+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+# Uncomment the following line to enable the OLED Display
+# CONFIG_ZMK_DISPLAY=y
+
+# Uncomment these two lines to add support for encoders
+# CONFIG_EC11=y
+# CONFIG_EC11_TRIGGER_GLOBAL_THREAD=y

app/boards/shields/leeloo/leeloo.dtsi

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+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * 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 = <12>;
+        rows = <5>;
+// | SW1  | SW2  | SW3  | SW4  | SW5  | SW6  |                 | SW6  | SW5  | SW4  | SW3  | SW2  | SW1  |
+// | SW7  | SW8  | SW9  | SW10 | SW11 | SW12 |                 | SW12 | SW11 | SW10 | SW9  | SW8  | SW7  |
+// | SW13 | SW14 | SW15 | SW16 | SW17 | SW18 |                 | SW18 | SW17 | SW16 | SW15 | SW14 | SW13 |
+// | SW19 | SW20 | SW21 | SW22 | SW23 | SW24 | SW29 |   | SW29 | SW24 | SW23 | SW22 | SW21 | SW20 | SW19 |
+//                      | SW25 | SW26 | SW27 | SW28 |   | SW28 | SW27 | SW26 | SW25 |
+        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(0,10) RC(0,11)
+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(1,10) RC(1,11)
+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(2,10) RC(2,11)
+RC(3,0) RC(3,1) RC(3,2) RC(3,3) RC(3,4) RC(3,5)                 RC(3,6) RC(3,7) RC(3,8) RC(3,9) RC(3,10) RC(3,11)
+                RC(4,1) RC(4,2) RC(4,3) RC(4,4) RC(4,5) RC(4,6) RC(4,7) RC(4,8) RC(4,9) RC(4,10)
+        >;
+    };
+
+    kscan0: kscan {
+        compatible = "zmk,kscan-gpio-matrix";
+        label = "KSCAN";
+
+        diode-direction = "col2row";
+        row-gpios
+            = <&pro_micro 5 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            , <&pro_micro 6 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            , <&pro_micro 7 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            , <&pro_micro 8 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            , <&pro_micro 9 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+            ;
+    };
+
+    left_encoder: encoder_left {
+        compatible = "alps,ec11";
+        label = "LEFT_ENCODER";
+        a-gpios = <&pro_micro 21 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
+        b-gpios = <&pro_micro 20 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
+        resolution = <4>;
+    };
+
+    right_encoder: encoder_right {
+        compatible = "alps,ec11";
+        label = "RIGHT_ENCODER";
+        a-gpios = <&pro_micro 20 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
+        b-gpios = <&pro_micro 21 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
+        resolution = <4>;
+    };
+
+    sensors {
+        compatible = "zmk,keymap-sensors";
+        sensors = <&left_encoder &right_encoder>;
+    };
+};
+
+&pro_micro_i2c {
+	status = "okay";
+
+	oled: ssd1306@3c {
+		compatible = "solomon,ssd1306fb";
+		reg = <0x3c>;
+		label = "DISPLAY";
+		width = <128>;
+		height = <32>;
+		segment-offset = <0>;
+		page-offset = <0>;
+		display-offset = <0>;
+		multiplex-ratio = <31>;
+		segment-remap;
+		com-invdir;
+		com-sequential;
+		prechargep = <0x22>;
+	};
+};

app/boards/shields/leeloo/leeloo.keymap

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+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#include <behaviors.dtsi>
+#include <dt-bindings/zmk/outputs.h>
+#include <dt-bindings/zmk/keys.h>
+#include <dt-bindings/zmk/bt.h>
+
+// Layers
+#define DEFAULT    0       // default_layer
+#define LOWER      1       // lower_layer
+#define RAISE      2       // raise_layer
+
+/ {
+
+    keymap {
+        compatible = "zmk,keymap";
+
+        default_layer {
+            bindings = <
+&kp ESC    &kp N1     &kp N2     &kp N3     &kp N4     &kp N5                           &kp N6     &kp N7     &kp N8     &kp N9     &kp N0     &kp BSLH
+&kp TAB    &kp Q      &kp W      &kp E      &kp R      &kp T                            &kp Y      &kp U      &kp I      &kp O      &kp P      &kp GRAV
+&kp CAPS   &kp A      &kp S      &kp D      &kp F      &kp G                            &kp H      &kp J      &kp K      &kp L      &kp SEMI   &kp SQT
+&kp LSHFT  &kp Z      &kp X      &kp C      &kp V      &kp B                            &kp N      &kp M      &kp COMMA  &kp DOT    &kp FSLH   &kp RSHFT
+                   &kp LALT   &kp LCTRL  &lt 1 RET  &lt 2 MINUS   &kp LGUI   &kp LGUI   &lt 2 EQUAL  &lt 1 SPACE  &kp BSPC   &kp DEL
+            >;
+
+            sensor-bindings = <&inc_dec_kp C_VOL_UP C_VOL_DN>;
+        };
+
+        lower_layer {
+            bindings = <
+&trans     &trans     &trans     &trans     &trans     &trans                           &trans     &trans     &trans     &trans     &trans     &trans
+&trans     &trans     &trans     &trans     &trans     &trans                           &trans     &trans     &trans     &trans     &trans     &trans
+&trans     &trans     &trans     &trans     &trans     &trans                           &trans     &trans     &trans     &trans     &trans     &trans
+&trans     &trans     &trans     &trans     &trans     &trans                           &trans     &trans     &trans     &trans     &trans     &trans
+                      &trans     &trans     &trans     &trans     &trans     &trans     &trans     &trans     &trans     &trans
+            >;
+
+            sensor-bindings = <&inc_dec_kp C_VOL_UP C_VOL_DN>;
+        };
+
+        raise_layer {
+            bindings = <
+&trans     &trans     &trans     &trans     &trans     &trans                           &trans     &trans     &trans     &trans     &trans     &trans
+&trans     &trans     &trans     &trans     &trans     &trans                           &trans     &trans     &trans     &trans     &trans     &trans
+&trans     &trans     &trans     &trans     &trans     &trans                           &trans     &trans     &trans     &trans     &trans     &trans
+&trans     &trans     &trans     &trans     &trans     &trans                           &trans     &trans     &trans     &trans     &trans     &trans
+                      &trans     &trans     &trans     &trans     &trans     &trans     &trans     &trans     &trans     &trans
+            >;
+
+            sensor-bindings = <&inc_dec_kp C_VOL_UP C_VOL_DN>;
+        };
+
+    };
+};

app/boards/shields/leeloo/leeloo.zmk.yml

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+file_format: "1"
+id: leeloo
+name: Leeloo
+type: shield
+url: https://clicketysplit.ca/pages/leeloo
+requires: [pro_micro]
+exposes: [i2c_oled]
+features:
+  - keys
+  - display
+  - encoder
+siblings:
+  - leeloo_left
+  - leeloo_right

app/boards/shields/leeloo/leeloo_left.conf

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+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+# Uncomment the following line to enable the OLED Display
+# CONFIG_ZMK_DISPLAY=y
+
+# Uncomment these two lines to add support for encoders
+# CONFIG_EC11=y
+# CONFIG_EC11_TRIGGER_GLOBAL_THREAD=y

app/boards/shields/leeloo/leeloo_left.overlay

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+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#include "leeloo.dtsi"
+
+&kscan0 {
+	col-gpios
+		= <&pro_micro 19 GPIO_ACTIVE_HIGH>
+		, <&pro_micro 18 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>
+		;
+};
+
+&left_encoder {
+	status = "okay";
+};

app/boards/shields/leeloo/leeloo_right.conf

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+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+# Uncomment the following line to enable the OLED Display
+# CONFIG_ZMK_DISPLAY=y
+
+# Uncomment these two lines to add support for encoders
+# CONFIG_EC11=y
+# CONFIG_EC11_TRIGGER_GLOBAL_THREAD=y

app/boards/shields/leeloo/leeloo_right.overlay

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+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#include "leeloo.dtsi"
+
+&default_transform {
+	col-offset = <6>;
+};
+
+&kscan0 {
+	col-gpios
+		= <&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>
+		;
+};
+
+&right_encoder {
+	status = "okay";
+};