[Keyboard] Add Karn Keyboard (#19846)

Co-authored-by: jack <0x6a73@protonmail.com>
Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>

5 files changed, 209 insertions, 0 deletions

diff --git a/keyboards/karn/keymaps/colemak/config.h b/keyboards/karn/keymaps/colemak/config.h
new file mode 100644
index 0000000000..71eb08ed1e
--- /dev/null
+++ b/keyboards/karn/keymaps/colemak/config.h
@@ -0,0 +1,13 @@
+// Copyright 2023 Robert Mills (@robcmills)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+// Equivalent to zmk behavior-hold-tap tap-preferred flavor
+// Do not force the mod-tap key press to be handled as a modifier
+// if any other key was pressed while the mod-tap key is held down.
+#define IGNORE_MOD_TAP_INTERRUPT_PER_KEY
+
+// Equivalent to zmk behavior-hold-tap hold-preferred flavor
+#define HOLD_ON_OTHER_KEY_PRESS_PER_KEY
+
diff --git a/keyboards/karn/keymaps/colemak/keymap.c b/keyboards/karn/keymaps/colemak/keymap.c
new file mode 100644
index 0000000000..dbe78c0dad
--- /dev/null
+++ b/keyboards/karn/keymaps/colemak/keymap.c
@@ -0,0 +1,96 @@
+// Copyright 2023 Robert Mills (@robcmills)
+// SPDX-License-Identifier: GPL-2.0
+
+#include QMK_KEYBOARD_H
+
+// Tap Dance declarations
+enum {
+    TD_F1_F11,
+    TD_F2_F12,
+};
+
+// Tap Dance definitions
+qk_tap_dance_action_t tap_dance_actions[] = {
+    // Tap once for F1, twice for F11
+    [TD_F1_F11] = ACTION_TAP_DANCE_DOUBLE(KC_F1, KC_F11),
+    [TD_F2_F12] = ACTION_TAP_DANCE_DOUBLE(KC_F2, KC_F12),
+};
+
+bool get_hold_on_other_key_press(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case SFT_T(KC_Z): // Special case for Shift
+            return true; // Immediately select the hold action when another key is pressed.
+        case SFT_T(KC_ESC):
+            return true;
+        default:
+            return false; // Do not select the hold action when another key is pressed.
+    }
+}
+
+bool get_ignore_mod_tap_interrupt(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case CTL_T(KC_X):
+            return true;
+        case ALT_T(KC_C):
+            return true;
+        case CMD_T(KC_V):
+            return true;
+        case CMD_T(KC_M):
+            return true;
+        case ALT_T(KC_COMM):
+            return true;
+        case CTL_T(KC_DOT):
+            return true;
+        case KC_X:
+            return true;
+        case KC_C:
+            return true;
+        case KC_V:
+            return true;
+        case KC_M:
+            return true;
+        case KC_COMM:
+            return true;
+        case KC_DOT:
+            return true;
+        default:
+            return false;
+    }
+}
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+
+    // default (colemak)
+    [0] = LAYOUT_split_3x6_3(
+        KC_NO,         KC_Q,       KC_W,       KC_F,       KC_P,       KC_G,                        KC_J,  KC_L,       KC_U,          KC_Y,         KC_SCLN,        KC_NO,
+        HYPR_T(KC_TAB),KC_A,       KC_R,       KC_S,       KC_T,       KC_D,                        KC_H,  KC_N,       KC_E,          KC_I,         KC_O,           HYPR_T(KC_ENT),
+        KC_NO,         SFT_T(KC_Z),CTL_T(KC_X),ALT_T(KC_C),CMD_T(KC_V),KC_B,                        KC_K,  CMD_T(KC_M),ALT_T(KC_COMM),CTL_T(KC_DOT),RSFT_T(KC_SLSH),KC_NO,
+                                                           MO(1),      SFT_T(KC_ESC),MO(3), KC_BSPC,KC_SPC,MO(2)
+    ),
+
+    // symbols
+    [1] = LAYOUT_split_3x6_3(
+        _______, KC_BSLS, KC_GRV,  KC_QUOT, KC_DQT,  KC_LCBR,                    KC_RCBR, KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, _______,
+        _______, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC,                    KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, _______,
+        _______, _______, _______, _______, _______, _______,                    _______, _______, _______, _______, _______, _______,
+                                            _______, _______, _______,  KC_DEL,  _______, _______
+    ),
+
+    // nav
+    [2] = LAYOUT_split_3x6_3(
+        _______, _______, KC_Q,      _______,   _______,   KC_VOLU,                    _______, _______, _______, KC_SCLN, _______, _______,
+        _______, C(KC_UP),C(KC_DOWN),G(KC_GRV), G(KC_TAB), KC_VOLD,                    KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT, KC_CAPS, _______,
+        _______, _______, _______,   _______,   _______,   KC_MUTE,                    _______, _______, _______, _______, _______, _______,
+                                                _______,   _______, _______,  _______, _______, _______
+    ),
+
+    // numbers
+    [3] = LAYOUT_split_3x6_3(
+        _______, TD(TD_F1_F11), TD(TD_F2_F12), KC_F3,   KC_F4,   KC_F5,                      KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  _______,
+        _______, KC_1,          KC_2,          KC_3,    KC_4,    KC_5,                       KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    _______,
+        _______, _______,       _______,       _______, _______, _______,                    _______, _______, _______, _______, _______, _______,
+                                                        _______, _______, _______,  _______, _______, _______
+    )
+};
+
diff --git a/keyboards/karn/keymaps/colemak/readme.md b/keyboards/karn/keymaps/colemak/readme.md
new file mode 100644
index 0000000000..8d3be932fe
--- /dev/null
+++ b/keyboards/karn/keymaps/colemak/readme.md
@@ -0,0 +1,58 @@
+```
+ /* 
+  *       ┌─────┬─────┬─────┬─────┬─────┐             ┌─────┬─────┬─────┬─────┬─────┐
+  *       │  Q  │  W  │  F  │  P  │  G  │    BASE     │  J  │  L  │  U  │  Y  │  ;  │
+  *       │     │     │     │     │     │    LAYER    │     │     │     │     │     │
+  * ┌─────┼─────┼─────┼─────┼─────┼─────┤   ┌─────┐   ├─────┼─────┼─────┼─────┼─────┼─────┐
+  * │ TAB │  A  │  R  │  S  │  T  │  D  │   │ TAP │   │  H  │  N  │  E  │  I  │  O  │ ENT │
+  * │ HYP │     │     │     │     │     │   │ HOLD│   │     │     │     │     │     │ HYP │
+  * └─────┼─────┼─────┼─────┼─────┼─────┤   └─────┘   ├─────┼─────┼─────┼─────┼─────┼─────┘
+  *       │  Z  │  X  │  C  │  V  │  B  │             │  K  │  M  │  ,  │  .  │  /  │
+  *       │ SFT │ CTL │ ALT │ CMD │     │             │     │ CMD │ ALT │ CTL │ SFT │
+  *       └─────┴─────┴─────┼─────┼─────┼─────┐ ┌─────┼─────┼─────┼─────┴─────┴─────┘
+  *                         │     │ ESC │     │ │ BAK │ SPC │     │
+  *                         │ SYM │ SFT │ NUM │ │     │     │ NAV │
+  *                         └─────┴─────┴─────┘ └─────┴─────┴─────┘
+  *       ┌─────┬─────┬─────┬─────┬─────┐             ┌─────┬─────┬─────┬─────┬─────┐
+  *       │  \  │  `  │  '  │  "  │  {  │     SYM     │  }  │  -  │  =  │  [  │  ]  │
+  *       │     │     │     │     │     │    LAYER    │     │     │     │     │     │
+  * ┌─────┼─────┼─────┼─────┼─────┼─────┤             ├─────┼─────┼─────┼─────┼─────┼─────┐
+  * │     │  !  │  @  │  #  │  $  │  %  │             │  ^  │  &  │  *  │  (  │  )  │     │
+  * │     │     │     │     │     │     │             │     │     │     │     │     │     │
+  * └─────┼─────┼─────┼─────┼─────┼─────┤             ├─────┼─────┼─────┼─────┼─────┼─────┘
+  *       │     │     │     │     │     │             │     │     │     │     │     │
+  *       │     │     │     │     │     │             │     │     │     │     │     │
+  *       └─────┴─────┴─────┼─────┼─────┼─────┐ ┌─────┼─────┼─────┼─────┴─────┴─────┘
+  *                         │     │     │     │ │ DEL │     │     │
+  *                         │     │     │     │ │     │     │     │
+  *                         └─────┴─────┴─────┘ └─────┴─────┴─────┘
+  *       ┌─────┬─────┬─────┬─────┬─────┐             ┌─────┬─────┬─────┬─────┬─────┐
+  *       │     │     │     │     │ VOL │     NAV     │     │     │     │     │     │
+  *       │     │     │     │     │ UP  │    LAYER    │     │     │     │     │     │
+  * ┌─────┼─────┼─────┼─────┼─────┼─────┤             ├─────┼─────┼─────┼─────┼─────┼─────┐
+  * │     │ CTL │ CTL │ CMD │ CMD │ VOL │             │  ←  │  ↓  │  ↑  │  →  │CAPS │     │
+  * │     │ + ↓ │ + ↑ │ + ` │ +TAB│ DOWN│             │     │     │     │     │LOCK │     │
+  * └─────┼─────┼─────┼─────┼─────┼─────┤             ├─────┼─────┼─────┼─────┼─────┼─────┘
+  *       │     │     │     │     │ MUTE│             │     │     │     │     │     │
+  *       │     │     │     │     │     │             │     │     │     │     │     │
+  *       └─────┴─────┴─────┼─────┼─────┼─────┐ ┌─────┼─────┼─────┼─────┴─────┴─────┘
+  *                         │     │     │     │ │     │     │     │
+  *                         │     │     │     │ │     │     │     │
+  *                         └─────┴─────┴─────┘ └─────┴─────┴─────┘
+  *       ┌─────┬─────┬─────┬─────┬─────┐             ┌─────┬─────┬─────┬─────┬─────┐
+  *       │ F1  │ F2  │ F3  │ F4  │ F5  │     NUM     │ F6  │ F7  │ F8  │ F9  │ F10 │
+  *       │ F11 │ F12 │     │     │     │    LAYER    │     │     │     │     │     │
+  * ┌─────┼─────┼─────┼─────┼─────┼─────┤   ┌─────┐   ├─────┼─────┼─────┼─────┼─────┼─────┐
+  * │     │  1  │  2  │  3  │  4  │  5  │   │ TAP │   │  6  │  7  │  8  │  9  │  0  │     │
+  * │     │     │     │     │     │     │   │TAPx2│   │     │     │     │     │     │     │
+  * └─────┼─────┼─────┼─────┼─────┼─────┤   └─────┘   ├─────┼─────┼─────┼─────┼─────┼─────┘
+  *       │     │     │     │     │     │             │     │     │     │     │     │
+  *       │     │     │     │     │     │             │     │     │     │     │     │
+  *       └─────┴─────┴─────┼─────┼─────┼─────┐ ┌─────┼─────┼─────┼─────┴─────┴─────┘
+  *                         │     │     │     │ │     │     │     │
+  *                         │     │     │     │ │     │     │     │
+  *                         └─────┴─────┴─────┘ └─────┴─────┴─────┘
+  */
+```
+
+
diff --git a/keyboards/karn/keymaps/colemak/rules.mk b/keyboards/karn/keymaps/colemak/rules.mk
new file mode 100644
index 0000000000..e5ddcae8d9
--- /dev/null
+++ b/keyboards/karn/keymaps/colemak/rules.mk
@@ -0,0 +1 @@
+TAP_DANCE_ENABLE = yes
diff --git a/keyboards/karn/keymaps/default/keymap.c b/keyboards/karn/keymaps/default/keymap.c
new file mode 100644
index 0000000000..5f679552d9
--- /dev/null
+++ b/keyboards/karn/keymaps/default/keymap.c
@@ -0,0 +1,41 @@
+// Copyright 2023 Robert Mills (@robcmills)
+// SPDX-License-Identifier: GPL-2.0
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+
+    // default (qwerty)
+    [0] = LAYOUT_split_3x6_3(
+        KC_NO,         KC_Q,       KC_W,       KC_E,       KC_R,       KC_T,                        KC_Y,  KC_U,       KC_I,          KC_O,         KC_P,           KC_NO,
+        HYPR_T(KC_TAB),KC_A,       KC_S,       KC_D,       KC_F,       KC_G,                        KC_H,  KC_J,       KC_K,          KC_L,         KC_SCLN,           HYPR_T(KC_ENT),
+        KC_NO,         SFT_T(KC_Z),CTL_T(KC_X),ALT_T(KC_C),CMD_T(KC_V),KC_B,                        KC_N,  CMD_T(KC_M),ALT_T(KC_COMM),CTL_T(KC_DOT),RSFT_T(KC_SLSH),KC_NO,
+                                                           MO(1),      SFT_T(KC_ESC),MO(3), KC_BSPC,KC_SPC,MO(2)
+    ),
+
+    // symbols
+    [1] = LAYOUT_split_3x6_3(
+        _______, KC_BSLS, KC_GRV,  KC_QUOT, KC_DQT,  KC_LCBR,                    KC_RCBR, KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, _______,
+        _______, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC,                    KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, _______,
+        _______, _______, _______, _______, _______, _______,                    _______, _______, _______, _______, _______, _______,
+                                            _______, _______, _______,  KC_DEL,  _______, _______
+    ),
+
+    // nav
+    [2] = LAYOUT_split_3x6_3(
+        _______, _______, _______,   _______,   _______,   KC_VOLU,                    _______, _______, _______, _______, _______, _______,
+        _______, C(KC_UP),C(KC_DOWN),G(KC_GRV), G(KC_TAB), KC_VOLD,                    KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT, KC_CAPS, _______,
+        _______, _______, _______,   _______,   _______,   KC_MUTE,                    _______, _______, _______, _______, _______, _______,
+                                                _______,   _______, _______,  _______, _______, _______
+    ),
+
+    // numbers
+    [3] = LAYOUT_split_3x6_3(
+        _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,                      KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  _______,
+        _______, KC_1,    KC_2,    KC_3,    KC_4,    KC_5,                       KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    _______,
+        _______, _______, _______, _______, _______, _______,                    _______, _______, _______, _______, _______, _______,
+                                            _______, _______, _______,  _______, _______, _______
+    )
+};
+