bastardkb/charybdis: add support for Charybdis (4x6 and 3x5) (#15333)

7 files changed, 421 insertions, 0 deletions

diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/default/config.h b/keyboards/bastardkb/charybdis/4x6/keymaps/default/config.h
new file mode 100644
index 0000000000..383b3f9dc3
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/default/config.h
@@ -0,0 +1,39 @@
+/**
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+/* RGB Matrix. */
+
+#ifdef RGB_MATRIX_ENABLE
+// Limit maximum brightness to keep power consumption reasonable, and avoid
+// disconnects.
+#    undef RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS 64
+
+// Rainbow swirl as startup mode.
+#    define ENABLE_RGB_MATRIX_CYCLE_LEFT_RIGHT
+#    define RGB_MATRIX_STARTUP_MODE RGB_MATRIX_CYCLE_LEFT_RIGHT
+
+// Slow swirl at startup.
+#    define RGB_MATRIX_STARTUP_SPD 32
+
+// Startup values.
+#    define RGB_MATRIX_STARTUP_HUE 0
+#    define RGB_MATRIX_STARTUP_SAT 255
+#    define RGB_MATRIX_STARTUP_VAL RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#    define RGB_MATRIX_STARTUP_HSV RGB_MATRIX_STARTUP_HUE, RGB_MATRIX_STARTUP_SAT, RGB_MATRIX_STARTUP_VAL
+#endif  // RGB_MATRIX_ENABLE
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/default/keymap.c b/keyboards/bastardkb/charybdis/4x6/keymaps/default/keymap.c
new file mode 100644
index 0000000000..de8eed9c03
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/default/keymap.c
@@ -0,0 +1,75 @@
+/**
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+enum charybdis_keymap_layers {
+    LAYER_BASE = 0,
+    LAYER_LOWER,
+    LAYER_RAISE,
+};
+
+#define LOWER MO(LAYER_LOWER)
+#define RAISE MO(LAYER_RAISE)
+
+// clang-format off
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [LAYER_BASE] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+        KC_ESC,    KC_1,    KC_2,    KC_3,    KC_4,    KC_5,       KC_6,    KC_7,    KC_8,    KC_9,    KC_0, KC_MINS,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+        KC_TAB,    KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,       KC_Y,    KC_U,    KC_I,    KC_O,    KC_P, KC_BSLS,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_LSFT,    KC_A,    KC_S,    KC_D,    KC_F,    KC_G,       KC_H,    KC_J,    KC_K,    KC_L, KC_SCLN, KC_QUOT,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_LCTL,    KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,       KC_N,    KC_M, KC_COMM,  KC_DOT, KC_SLSH, KC_LALT,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                   KC_LGUI, KC_SPC,   LOWER,      RAISE,  KC_ENT,
+                                           KC_LALT, KC_BSPC,     KC_DEL
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+
+  [LAYER_LOWER] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+       KC_TILD, KC_EXLM,   KC_AT, KC_HASH,  KC_DLR, KC_PERC,    KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_UNDS,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       RGB_MOD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    KC_LBRC,   KC_P7,   KC_P8,   KC_P9, KC_RBRC, XXXXXXX,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       RGB_TOG, KC_LGUI, KC_LALT, KC_LCTL, KC_LSFT, XXXXXXX,    KC_PPLS,   KC_P4,   KC_P5,   KC_P6, KC_PMNS, KC_PEQL,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+      RGB_RMOD, XXXXXXX, XXXXXXX, XXXXXXX, EEP_RST,   RESET,    KC_PAST,   KC_P1,   KC_P2,   KC_P3, KC_PSLS, KC_PDOT,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                  XXXXXXX, XXXXXXX, _______,    XXXXXXX, _______,
+                                           XXXXXXX, XXXXXXX,      KC_P0
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+
+  [LAYER_RAISE] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+        KC_F12,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,      KC_F6,   KC_F7,   KC_F8,   KC_F9,  KC_F10,  KC_F11,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MNXT, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_VOLU,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MPLY, KC_LEFT,   KC_UP, KC_DOWN, KC_RGHT, XXXXXXX,    XXXXXXX, KC_RSFT, KC_RCTL, KC_RALT, KC_RGUI, KC_MUTE,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MPRV, KC_HOME, KC_PGUP, KC_PGDN,  KC_END, XXXXXXX,      RESET, EEP_RST, XXXXXXX, XXXXXXX, XXXXXXX, KC_VOLD,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                  _______, _______, XXXXXXX,    _______, XXXXXXX,
+                                           _______, _______,    XXXXXXX
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+};
+// clang-format on
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/default/readme.md b/keyboards/bastardkb/charybdis/4x6/keymaps/default/readme.md
new file mode 100644
index 0000000000..23a85e54d5
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/default/readme.md
@@ -0,0 +1,7 @@
+# Charybdis (4x6) default keymap
+
+> :bulb: Have a look at the [`via` keymap](../via) for a more feature-rich layout.
+
+The Charydbis (4x6) default keymap is inspired from the original [Dactyl Manuform](../../../../../handwired/dactyl_manuform) default keymap.
+
+This layout supports RGB matrix. However, due to space constraints on the MCU, only a limited number of effect can be enabled at once. Look at the `config.h` file and enable your favorite effect.
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/via/config.h b/keyboards/bastardkb/charybdis/4x6/keymaps/via/config.h
new file mode 100644
index 0000000000..75eb2240f3
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/via/config.h
@@ -0,0 +1,72 @@
+/**
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#ifdef VIA_ENABLE
+/* VIA configuration. */
+#    define DYNAMIC_KEYMAP_LAYER_COUNT 4
+#endif  // VIA_ENABLE
+
+/* Disable unused features. */
+#define NO_ACTION_ONESHOT
+
+#ifndef TAPPING_TERM
+/**
+ * \brief Configure the global tapping term (default: 200ms).
+ *
+ * If you have a lot of accidental mod activations, crank up the tapping term.
+ *
+ * See docs.qmk.fm/using-qmk/software-features/tap_hold#tapping-term
+ */
+#    define TAPPING_TERM 200
+#endif  // TAPPING_TERM
+
+/* Charybdis-specific features. */
+
+#ifdef POINTING_DEVICE_ENABLE
+// Enable pointer acceleration, which increases the speed by ~2x for large
+// displacement, while maintaining 1x speed for slow movements.
+// - `CHARYBDIS_POINTER_ACCELERATION_FACTOR`
+#    define CHARYBDIS_POINTER_ACCELERATION_ENABLE
+
+// Automatically enable the pointer layer when moving the trackball.  See also:
+// - `CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS`
+// - `CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD`
+// #define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+#endif  // POINTING_DEVICE_ENABLE
+
+/* RGB Matrix. */
+
+#ifdef RGB_MATRIX_ENABLE
+// Limit maximum brightness to keep power consumption reasonable, and avoid
+// disconnects.
+#    undef RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS 64
+
+// Rainbow swirl as startup mode.
+#    define ENABLE_RGB_MATRIX_CYCLE_LEFT_RIGHT
+#    define RGB_MATRIX_STARTUP_MODE RGB_MATRIX_CYCLE_LEFT_RIGHT
+
+// Slow swirl at startup.
+#    define RGB_MATRIX_STARTUP_SPD 32
+
+// Startup values.
+#    define RGB_MATRIX_STARTUP_HUE 0
+#    define RGB_MATRIX_STARTUP_SAT 255
+#    define RGB_MATRIX_STARTUP_VAL RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#    define RGB_MATRIX_STARTUP_HSV RGB_MATRIX_STARTUP_HUE, RGB_MATRIX_STARTUP_SAT, RGB_MATRIX_STARTUP_VAL
+#endif  // RGB_MATRIX_ENABLE
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/via/keymap.c b/keyboards/bastardkb/charybdis/4x6/keymaps/via/keymap.c
new file mode 100644
index 0000000000..d53d580a48
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/via/keymap.c
@@ -0,0 +1,166 @@
+/**
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+#ifdef CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+#    include "timer.h"
+#endif  // CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+
+enum charybdis_keymap_layers {
+    LAYER_BASE = 0,
+    LAYER_LOWER,
+    LAYER_RAISE,
+    LAYER_POINTER,
+};
+
+/** \brief Automatically enable sniping-mode on the pointer layer. */
+#define CHARYBDIS_AUTO_SNIPING_ON_LAYER LAYER_POINTER
+
+#ifdef CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+static uint16_t auto_pointer_layer_timer = 0;
+
+#    ifndef CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS
+#        define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS 1000
+#    endif  // CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS
+
+#    ifndef CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD
+#        define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD 8
+#    endif  // CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD
+#endif      // CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+
+#define LOWER MO(LAYER_LOWER)
+#define RAISE MO(LAYER_RAISE)
+#define PT_Z LT(LAYER_POINTER, KC_Z)
+#define PT_SLSH LT(LAYER_POINTER, KC_SLSH)
+
+// clang-format off
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [LAYER_BASE] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+        KC_ESC,    KC_1,    KC_2,    KC_3,    KC_4,    KC_5,       KC_6,    KC_7,    KC_8,    KC_9,    KC_0, KC_MINS,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+        KC_TAB,    KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,       KC_Y,    KC_U,    KC_I,    KC_O,    KC_P, KC_BSLS,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_LSFT,    KC_A,    KC_S,    KC_D,    KC_F,    KC_G,       KC_H,    KC_J,    KC_K,    KC_L, KC_SCLN, KC_QUOT,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_LCTL,    PT_Z,    KC_X,    KC_C,    KC_V,    KC_B,       KC_N,    KC_M, KC_COMM,  KC_DOT, PT_SLSH, KC_LALT,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                   KC_LGUI, KC_SPC,   LOWER,      RAISE,  KC_ENT,
+                                           KC_LALT, KC_BSPC,     KC_DEL
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+
+  [LAYER_LOWER] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+       KC_TILD, KC_EXLM,   KC_AT, KC_HASH,  KC_DLR, KC_PERC,    KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_UNDS,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       RGB_MOD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    KC_LBRC,   KC_P7,   KC_P8,   KC_P9, KC_RBRC, XXXXXXX,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       RGB_TOG, KC_LGUI, KC_LALT, KC_LCTL, KC_LSFT, XXXXXXX,    KC_PPLS,   KC_P4,   KC_P5,   KC_P6, KC_PMNS, KC_PEQL,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+      RGB_RMOD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    KC_PAST,   KC_P1,   KC_P2,   KC_P3, KC_PSLS, KC_PDOT,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                  XXXXXXX, XXXXXXX, _______,    XXXXXXX, _______,
+                                           XXXXXXX, XXXXXXX,      KC_P0
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+
+  [LAYER_RAISE] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+        KC_F12,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,      KC_F6,   KC_F7,   KC_F8,   KC_F9,  KC_F10,  KC_F11,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MNXT, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_VOLU,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MPLY, KC_LEFT,   KC_UP, KC_DOWN, KC_RGHT, XXXXXXX,    XXXXXXX, KC_RSFT, KC_RCTL, KC_RALT, KC_RGUI, KC_MUTE,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MPRV, KC_HOME, KC_PGUP, KC_PGDN,  KC_END, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_VOLD,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                  _______, _______, XXXXXXX,    _______, XXXXXXX,
+                                           _______, _______,    XXXXXXX
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+
+  [LAYER_POINTER] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+       XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, DPI_MOD, S_D_MOD,    S_D_MOD, DPI_MOD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       XXXXXXX, KC_LGUI, KC_LALT, KC_LCTL, KC_LSFT, XXXXXXX,    XXXXXXX, KC_RSFT, KC_RCTL, KC_RALT, KC_RGUI, XXXXXXX,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       XXXXXXX, _______, DRGSCRL, SNIPING, EEP_RST,   RESET,      RESET, EEP_RST, SNIPING, DRGSCRL, _______, XXXXXXX,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                  KC_BTN2, KC_BTN1, KC_BTN3,    KC_BTN3, KC_BTN1,
+                                           XXXXXXX, KC_BTN2,    KC_BTN2
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+};
+// clang-format on
+
+#ifdef POINTING_DEVICE_ENABLE
+#    ifdef CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+report_mouse_t pointing_device_task_user(report_mouse_t mouse_report) {
+    if (abs(mouse_report.x) > CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD || abs(mouse_report.y) > CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD) {
+        if (auto_pointer_layer_timer == 0) {
+            layer_on(LAYER_POINTER);
+#        ifdef RGB_MATRIX_ENABLE
+            rgb_matrix_mode_noeeprom(RGB_MATRIX_NONE);
+            rgb_matrix_sethsv_noeeprom(HSV_GREEN);
+#        endif  // RGB_MATRIX_ENABLE
+        }
+        auto_pointer_layer_timer = timer_read();
+    }
+    return mouse_report;
+}
+
+void matrix_scan_kb(void) {
+    if (auto_pointer_layer_timer != 0 && TIMER_DIFF_16(timer_read(), auto_pointer_layer_timer) >= CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS) {
+        auto_pointer_layer_timer = 0;
+        layer_off(LAYER_POINTER);
+#        ifdef RGB_MATRIX_ENABLE
+        rgb_matrix_mode_noeeprom(RGB_MATRIX_STARTUP_MODE);
+#        endif  // RGB_MATRIX_ENABLE
+    }
+    matrix_scan_user();
+}
+#    endif  // CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+
+#    ifdef CHARYBDIS_AUTO_SNIPING_ON_LAYER
+layer_state_t layer_state_set_kb(layer_state_t state) {
+    state = layer_state_set_user(state);
+    charybdis_set_pointer_sniping_enabled(layer_state_cmp(state, CHARYBDIS_AUTO_SNIPING_ON_LAYER));
+    return state;
+}
+#    endif  // CHARYBDIS_AUTO_SNIPING_ON_LAYER
+#endif      // POINTING_DEVICE_ENABLE
+
+#ifdef RGB_MATRIX_ENABLE
+// Forward-declare this helper function since it is defined in rgb_matrix.c.
+void rgb_matrix_update_pwm_buffers(void);
+#endif
+
+void shutdown_user(void) {
+#ifdef RGBLIGHT_ENABLE
+    rgblight_enable_noeeprom();
+    rgblight_mode_noeeprom(1);
+    rgblight_setrgb_red();
+#endif  // RGBLIGHT_ENABLE
+#ifdef RGB_MATRIX_ENABLE
+    rgb_matrix_set_color_all(RGB_RED);
+    rgb_matrix_update_pwm_buffers();
+#endif  // RGB_MATRIX_ENABLE
+}
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/via/readme.md b/keyboards/bastardkb/charybdis/4x6/keymaps/via/readme.md
new file mode 100644
index 0000000000..ad2634ef0c
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/via/readme.md
@@ -0,0 +1,61 @@
+# Charybdis (4x6) `via` keymap
+
+The Charydbis (4x6) `via` keymap is inspired from the original [Dactyl Manuform](../../../../../handwired/dactyl_manuform) default keymap, with some features and changes specific to the Charybdis.
+
+This layout supports RGB matrix. However, due to space constraints on the MCU, only a limited number of effect can be enabled at once. Look at the `config.h` file and enable your favorite effect.
+
+## Customizing the keymap
+
+### Dynamic DPI scaling
+
+Use the following keycodes to change the default DPI:
+
+-   `POINTER_DEFAULT_DPI_FORWARD`: increases the DPI; decreases when shifted;
+-   `POINTER_DEFAULT_DPI_REVERSE`: decreases the DPI; increases when shifted.
+
+There's a maximum of 16 possible values for the sniping mode DPI. See the [Charybdis documentation](../../README.md) for more information.
+
+Use the following keycodes to change the sniping mode DPI:
+
+-   `POINTER_SNIPING_DPI_FORWARD`: increases the DPI; decreases when shifted;
+-   `POINTER_SNIPING_DPI_REVERSE`: decreases the DPI; increases when shifted.
+
+There's a maximum of 4 possible values for the sniping mode DPI. See the [Charybdis documentation](../../README.md) for more information.
+
+### Drag-scroll
+
+Use the `DRAGSCROLL_MODE` keycode to enable drag-scroll on hold. Use the `DRAGSCROLL_TOGGLE` keycode to enable/disable drag-scroll on key press.
+
+### Sniping
+
+Use the `SNIPING_MODE` keycode to enable sniping mode on hold. Use the `SNIPING_TOGGLE` keycode to enable/disable sniping mode on key press.
+
+Change the value of `CHARYBDIS_AUTO_SNIPING_ON_LAYER` to automatically enable sniping mode on layer change. By default, sniping mode is enabled on the pointer layer:
+
+```c
+#define CHARYBDIS_AUTO_SNIPING_ON_LAYER LAYER_POINTER
+```
+
+### Auto pointer layer
+
+The pointer layer can be automatically enabled when moving the trackball. To enable or disable this behavior, add or remove the following define:
+
+```c
+#define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+```
+
+By default, the layer is turned off 1 second after the last registered trackball movement:
+
+```c
+#define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS 1000
+```
+
+The trigger sensibility can also be tuned. The lower the value, the more sensible the trigger:
+
+```c
+#define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD 8
+```
+
+## Layout
+
+![Keymap layout (generated with keyboard-layout-editor.com)](https://i.imgur.com/qI7phR7.png)
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/via/rules.mk b/keyboards/bastardkb/charybdis/4x6/keymaps/via/rules.mk
new file mode 100644
index 0000000000..1e5b99807c
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes