share code and add magic layer

5 files changed, 17 insertions, 503 deletions

diff --git a/planck/achordion.c b/planck/achordion.c
deleted file mode 100644
index 148ff1e..0000000
--- a/planck/achordion.c
+++ /dev/null
@@ -1,220 +0,0 @@
-// Copyright 2022-2023 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @file achordion.c
- * @brief Achordion implementation
- *
- * For full documentation, see
- * <https://getreuer.info/posts/keyboards/achordion>
- */
-
-#include "achordion.h"
-
-// Copy of the `record` and `keycode` args for the current active tap-hold key.
-static keyrecord_t tap_hold_record;
-static uint16_t tap_hold_keycode = KC_NO;
-// Timeout timer. When it expires, the key is considered held.
-static uint16_t hold_timer = 0;
-// Eagerly applied mods, if any.
-static uint8_t eager_mods = 0;
-
-// Achordion's current state.
-enum {
-  // A tap-hold key is pressed, but hasn't yet been settled as tapped or held.
-  STATE_UNSETTLED,
-  // Achordion is inactive.
-  STATE_RELEASED,
-  // Active tap-hold key has been settled as tapped.
-  STATE_TAPPING,
-  // Active tap-hold key has been settled as held.
-  STATE_HOLDING,
-  // This state is set while calling `process_record()`, which will recursively
-  // call `process_achordion()`. This state is checked so that we don't process
-  // events generated by Achordion and potentially create an infinite loop.
-  STATE_RECURSING,
-};
-static uint8_t achordion_state = STATE_RELEASED;
-
-// Calls `process_record()` with state set to RECURSING.
-static void recursively_process_record(keyrecord_t* record, uint8_t state) {
-  achordion_state = STATE_RECURSING;
-  process_record(record);
-  achordion_state = state;
-}
-
-// Clears eagerly-applied mods.
-static void clear_eager_mods(void) {
-  unregister_mods(eager_mods);
-  eager_mods = 0;
-}
-
-// Sends hold press event and settles the active tap-hold key as held.
-static void settle_as_hold(void) {
-  clear_eager_mods();
-  // Create hold press event.
-  recursively_process_record(&tap_hold_record, STATE_HOLDING);
-}
-
-bool process_achordion(uint16_t keycode, keyrecord_t* record) {
-  // Don't process events that Achordion generated.
-  if (achordion_state == STATE_RECURSING) {
-    return true;
-  }
-
-  // Determine whether the current event is for a mod-tap or layer-tap key.
-  const bool is_mt = IS_QK_MOD_TAP(keycode);
-  const bool is_tap_hold = is_mt || IS_QK_LAYER_TAP(keycode);
-  // Check that this is a normal key event, don't act on combos.
-#ifdef IS_KEYEVENT
-  const bool is_key_event = IS_KEYEVENT(record->event);
-#else
-  const bool is_key_event = (record->event.key.row < 254 &&
-                             record->event.key.col < 254);
-#endif
-
-  if (achordion_state == STATE_RELEASED) {
-    if (is_tap_hold && record->tap.count == 0 && record->event.pressed &&
-        is_key_event) {
-      // A tap-hold key is pressed and considered by QMK as "held".
-      const uint16_t timeout = achordion_timeout(keycode);
-      if (timeout > 0) {
-        achordion_state = STATE_UNSETTLED;
-        // Save info about this key.
-        tap_hold_keycode = keycode;
-        tap_hold_record = *record;
-        hold_timer = record->event.time + timeout;
-
-        if (is_mt) {  // Apply mods immediately if they are "eager."
-          uint8_t mod = mod_config(QK_MOD_TAP_GET_MODS(tap_hold_keycode));
-          if (achordion_eager_mod(mod)) {
-            eager_mods = ((mod & 0x10) == 0) ? mod : (mod << 4);
-            register_mods(eager_mods);
-          }
-        }
-
-        dprintf("Achordion: Key 0x%04X pressed.%s\n", keycode,
-                eager_mods ? " Set eager mods." : "");
-        return false;  // Skip default handling.
-      }
-    }
-
-    return true;  // Otherwise, continue with default handling.
-  }
-
-  if (keycode == tap_hold_keycode && !record->event.pressed) {
-    // The active tap-hold key is being released.
-    if (achordion_state == STATE_HOLDING) {
-      dprintln("Achordion: Key released. Plumbing hold release.");
-      tap_hold_record.event.pressed = false;
-      // Plumb hold release event.
-      recursively_process_record(&tap_hold_record, STATE_RELEASED);
-    } else {
-      dprintf("Achordion: Key released.%s\n",
-              eager_mods ? " Clearing eager mods." : "");
-      if (is_mt) {
-        clear_eager_mods();
-      }
-    }
-
-    achordion_state = STATE_RELEASED;
-    return false;
-  }
-
-  if (achordion_state == STATE_UNSETTLED && record->event.pressed) {
-    // Press event occurred on a key other than the active tap-hold key.
-
-    // If the other key is *also* a tap-hold key and considered by QMK to be
-    // held, then we settle the active key as held. This way, things like
-    // chording multiple home row modifiers will work, but let's our logic
-    // consider simply a single tap-hold key as "active" at a time.
-    //
-    // Otherwise, we call `achordion_chord()` to determine whether to settle the
-    // tap-hold key as tapped vs. held. We implement the tap or hold by plumbing
-    // events back into the handling pipeline so that QMK features and other
-    // user code can see them. This is done by calling `process_record()`, which
-    // in turn calls most handlers including `process_record_user()`.
-    if (!is_key_event || (is_tap_hold && record->tap.count == 0) ||
-        achordion_chord(tap_hold_keycode, &tap_hold_record, keycode, record)) {
-      dprintln("Achordion: Plumbing hold press.");
-      settle_as_hold();
-    } else {
-      clear_eager_mods();  // Clear in case eager mods were set.
-
-      dprintln("Achordion: Plumbing tap press.");
-      tap_hold_record.tap.count = 1;  // Revise event as a tap.
-      tap_hold_record.tap.interrupted = true;
-      // Plumb tap press event.
-      recursively_process_record(&tap_hold_record, STATE_TAPPING);
-
-      send_keyboard_report();
-#if TAP_CODE_DELAY > 0
-      wait_ms(TAP_CODE_DELAY);
-#endif  // TAP_CODE_DELAY > 0
-
-      dprintln("Achordion: Plumbing tap release.");
-      tap_hold_record.event.pressed = false;
-      // Plumb tap release event.
-      recursively_process_record(&tap_hold_record, STATE_TAPPING);
-    }
-
-    recursively_process_record(record, achordion_state);  // Re-process event.
-    return false;  // Block the original event.
-  }
-
-  return true;
-}
-
-void achordion_task(void) {
-  if (achordion_state == STATE_UNSETTLED &&
-      timer_expired(timer_read(), hold_timer)) {
-    dprintln("Achordion: Timeout. Plumbing hold press.");
-    settle_as_hold();  // Timeout expired, settle the key as held.
-  }
-}
-
-// Returns true if `pos` on the left hand of the keyboard, false if right.
-static bool on_left_hand(keypos_t pos) {
-#ifdef SPLIT_KEYBOARD
-  return pos.row < MATRIX_ROWS / 2;
-#else
-  return (MATRIX_COLS > MATRIX_ROWS) ? pos.col < MATRIX_COLS / 2
-                                     : pos.row < MATRIX_ROWS / 2;
-#endif
-}
-
-bool achordion_opposite_hands(const keyrecord_t* tap_hold_record,
-                              const keyrecord_t* other_record) {
-  return on_left_hand(tap_hold_record->event.key) !=
-         on_left_hand(other_record->event.key);
-}
-
-// By default, use the BILATERAL_COMBINATIONS rule to consider the tap-hold key
-// "held" only when it and the other key are on opposite hands.
-__attribute__((weak)) bool achordion_chord(uint16_t tap_hold_keycode,
-                                           keyrecord_t* tap_hold_record,
-                                           uint16_t other_keycode,
-                                           keyrecord_t* other_record) {
-  return achordion_opposite_hands(tap_hold_record, other_record);
-}
-
-// By default, the timeout is 1000 ms for all keys.
-__attribute__((weak)) uint16_t achordion_timeout(uint16_t tap_hold_keycode) {
-  return 1000;
-}
-
-// By default, Shift and Ctrl mods are eager, and Alt and GUI are not.
-__attribute__((weak)) bool achordion_eager_mod(uint8_t mod) {
-  return (mod & (MOD_LALT | MOD_LGUI)) == 0;
-}
diff --git a/planck/achordion.h b/planck/achordion.h
deleted file mode 100644
index e6bb534..0000000
--- a/planck/achordion.h
+++ /dev/null
@@ -1,164 +0,0 @@
-// Copyright 2022-2023 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @file achordion.h
- * @brief Achordion: Customizing the tap-hold decision.
- *
- * Overview
- * --------
- *
- * This library customizes when tap-hold keys are considered held vs. tapped
- * based on the next pressed key, like Manna Harbour's Bilateral Combinations or
- * ZMK's positional hold. The library works on top of QMK's existing tap-hold
- * implementation. You define mod-tap and layer-tap keys as usual and use
- * Achordion to fine-tune the behavior.
- *
- * When QMK settles a tap-hold key as held, Achordion intercepts the event.
- * Achordion then revises the event as a tap or passes it along as a hold:
- *
- *  * Chord condition: On the next key press, a customizable `achordion_chord()`
- *    function is called, which takes the tap-hold key and the next key pressed
- *    as args. When the function returns true, the tap-hold key is settled as
- *    held, and otherwise as tapped.
- *
- *  * Timeout: If no other key press occurs within a timeout, the tap-hold key
- *    is settled as held. This is customizable with `achordion_timeout()`.
- *
- * Achordion only changes the behavior when QMK considered the key held. It
- * changes some would-be holds to taps, but no taps to holds.
- *
- * @note Some QMK features handle events before the point where Achordion can
- * intercept them, particularly: Combos, Key Lock, and Dynamic Macros. It's
- * still possible to use these features and Achordion in your keymap, but beware
- * they might behave poorly when used simultaneously with tap-hold keys.
- *
- *
- * For full documentation, see
- * <https://getreuer.info/posts/keyboards/achordion>
- */
-
-#pragma once
-
-#include "quantum.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * Handler function for Achordion.
- *
- * Call this function from `process_record_user()` as
- *
- *     #include "features/achordion.h"
- *
- *     bool process_record_user(uint16_t keycode, keyrecord_t* record) {
- *       if (!process_achordion(keycode, record)) { return false; }
- *       // Your macros...
- *       return true;
- *     }
- */
-bool process_achordion(uint16_t keycode, keyrecord_t* record);
-
-/**
- * Matrix task function for Achordion.
- *
- * Call this function from `matrix_scan_user()` as
- *
- *     void matrix_scan_user(void) {
- *       achordion_task();
- *     }
- */
-void achordion_task(void);
-
-/**
- * Optional callback to customize which key chords are considered "held".
- *
- * In your keymap.c, define the callback
- *
- *     bool achordion_chord(uint16_t tap_hold_keycode,
- *                          keyrecord_t* tap_hold_record,
- *                          uint16_t other_keycode,
- *                          keyrecord_t* other_record) {
- *        // Conditions...
- *     }
- *
- * This callback is called if while `tap_hold_keycode` is pressed,
- * `other_keycode` is pressed. Return true if the tap-hold key should be
- * considered held, or false to consider it tapped.
- *
- * @param tap_hold_keycode Keycode of the tap-hold key.
- * @param tap_hold_record keyrecord_t from the tap-hold press event.
- * @param other_keycode Keycode of the other key.
- * @param other_record keyrecord_t from the other key's press event.
- * @return True if the tap-hold key should be considered held.
- */
-bool achordion_chord(uint16_t tap_hold_keycode, keyrecord_t* tap_hold_record,
-                     uint16_t other_keycode, keyrecord_t* other_record);
-
-/**
- * Optional callback to define a timeout duration per keycode.
- *
- * In your keymap.c, define the callback
- *
- *     uint16_t achordion_timeout(uint16_t tap_hold_keycode) {
- *       // ...
- *     }
- *
- * The callback determines Achordion's timeout duration for `tap_hold_keycode`
- * in units of milliseconds. The timeout be in the range 0 to 32767 ms (upper
- * bound is due to 16-bit timer limitations). Use a timeout of 0 to bypass
- * Achordion.
- *
- * @param tap_hold_keycode Keycode of the tap-hold key.
- * @return Timeout duration in milliseconds in the range 0 to 32767.
- */
-uint16_t achordion_timeout(uint16_t tap_hold_keycode);
-
-/**
- * Optional callback defining which mods are "eagerly" applied.
- *
- * This callback defines  which mods are "eagerly" applied while a mod-tap
- * key is still being settled. This is helpful to reduce delay particularly when
- * using mod-tap keys with an external mouse.
- *
- * Define this callback in your keymap.c. The default callback is eager for
- * Shift and Ctrl, and not for Alt and GUI:
- *
- *     bool achordion_eager_mod(uint8_t mod) {
- *       return (mod & (MOD_LALT | MOD_LGUI)) == 0;
- *     }
- *
- * @note `mod` should be compared with `MOD_` prefixed codes, not `KC_` codes,
- * described at <https://docs.qmk.fm/#/mod_tap>.
- *
- * @param mod Modifier `MOD_` code.
- * @return True if the modifier should be eagerly applied.
- */
-bool achordion_eager_mod(uint8_t mod);
-
-/**
- * Returns true if the args come from keys on opposite hands.
- *
- * @param tap_hold_record keyrecord_t from the tap-hold key's event.
- * @param other_record keyrecord_t from the other key's event.
- * @return True if the keys are on opposite hands.
- */
-bool achordion_opposite_hands(const keyrecord_t* tap_hold_record,
-                              const keyrecord_t* other_record);
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/planck/config.h b/planck/config.h
index af3edee..4e17100 100644
--- a/planck/config.h
+++ b/planck/config.h
@@ -16,30 +16,8 @@
 
 #pragma once
 
-// no more than 8 layers
-#define LAYER_STATE_8BIT
-
-// we don't use one shots
-#define NO_ACTION_ONESHOT
-
-// we don't have any lock switches
-#undef LOCKING_SUPPORT_ENABLE
-#undef LOCKING_RESYNC_ENABLE
-
-// enable NKRO by default
-#define FORCE_NKRO
-
-// settings for home row modifiers
-// details see https://precondition.github.io/home-row-mods
-
-// the default of 200
-#define TAPPING_TERM 175
-
-// Enable rapid switch from tap to hold, disables double tap hold auto-repeat.
-#define QUICK_TAP_TERM 0
-
-// try to be more permissive with holds
-#define PERMISSIVE_HOLD
+// our shared config parts
+#include "../common/config.h"
 
 //
 // audio configuration
diff --git a/planck/keymap.c b/planck/keymap.c
index 661d086..a85971b 100644
--- a/planck/keymap.c
+++ b/planck/keymap.c
@@ -31,66 +31,14 @@ K20,   K21,   K22,   K23,   K24,   KC_NO, KC_NO, K25,   K26,   K27,   K28,   K29
 KC_NO, KC_NO, KC_NO, K30,   K31,   KC_NO, KC_NO, K32,   K33,   KC_NO, KC_NO, KC_NO\
 )
 
-// ┌────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
-// │ D E F I N I T I O N S                                                                                                  │
-// └────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
-// ▝▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▘
-
-// ┌─────────────────────────────────────────────────┐
-// │ d e f i n e   l a y e r s                       │
-// └─────────────────────────────────────────────────┘
-
-enum my_layers {
-  _QWERTY,
-  _SYM,
-  _NUM,
-  _FN,
-  _NAV
-};
-
-// ┌────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
-// │ K E Y M A P S                                                                                                          │
-// └────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
-// ▝▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▘
-
-const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
-[_QWERTY] = LAYOUT(
-    KC_W,           KC_L,         KC_Y,         KC_P,             KC_B,             KC_Z,            KC_F,              KC_SCLN,            KC_U,           KC_QUOT,
-     RALT_T(KC_C) ,  LALT_T(KC_R), LCTL_T(KC_S) ,  LSFT_T(KC_T) ,   LGUI_T(KC_G),             RGUI_T(KC_M),              RSFT_T(KC_N),      RCTL_T(KC_O),    LALT_T(KC_I) ,     RALT_T(KC_A),
-   KC_Q ,   KC_J,          KC_V , KC_D ,     KC_K,             KC_X,             KC_H ,      KC_SLSH , KC_COMM,         KC_DOT ,
-                                                MO(_SYM), LT(_NUM, KC_SPC),         LT(_NAV, KC_E),    MO(_FN)
-),
-
-[_SYM] = LAYOUT(
-    XXXXXXX,        C(KC_X),      C(KC_C),      C(KC_V),          XXXXXXX,          KC_LCBR,         KC_AMPR,           KC_ASTR,         KC_LPRN,        KC_RCBR,
-   KC_RALT,  KC_LALT,  KC_LCTL,  KC_LSFT,    KC_LGUI,        KC_PLUS,         KC_DLR,            KC_PERC,         KC_CIRC,        KC_COLN,
-   XXXXXXX,        XXXXXXX,      XXXXXXX,      XXXXXXX,          XXXXXXX,          KC_PIPE,         KC_EXLM,           KC_AT,           KC_HASH,        KC_TILD,
-                                      _______,           _______,           KC_UNDS,         KC_RPRN
-),
-
-[_NUM] = LAYOUT(
-    XXXXXXX,        C(KC_X),      C(KC_C),      C(KC_V),          XXXXXXX,          KC_LBRC,         KC_7,              KC_8,            KC_9,           KC_RBRC,
-    KC_RALT,  KC_LALT,  KC_LCTL,  KC_LSFT,    KC_LGUI,        KC_EQL,          KC_4,              KC_5,            KC_6,           KC_SCLN,
-    XXXXXXX,        XXXXXXX,      XXXXXXX,      XXXXXXX,          XXXXXXX,          KC_BSLS,         KC_1,              KC_2,            KC_3,           KC_GRV,
-                                              _______,           _______,           KC_MINS,         KC_0
-),
-
-[_FN] = LAYOUT(
-    KC_F12,         KC_F7,        KC_F8,        KC_F9,            KC_PSCR,          QK_BOOT,         XXXXXXX,           XXXXXXX,         XXXXXXX,        XXXXXXX,
-    KC_F11,         KC_F4,        KC_F5,        KC_F6,            KC_DEL,           KC_RGUI,         KC_RSFT,           KC_RCTL,         KC_LALT,        KC_RALT,
-   KC_F10,         KC_F1,        KC_F2,        KC_F3,            KC_INS,           XXXXXXX,         XXXXXXX,           XXXXXXX,         XXXXXXX,        XXXXXXX,
-                                            KC_BSPC,           KC_ESC,           _______,          _______
-),
-
-[_NAV] = LAYOUT(
-    XXXXXXX,        KC_PGUP,      KC_UP,        KC_PGDN,          XXXXXXX,          QK_BOOT,         XXXXXXX,           XXXXXXX,         XXXXXXX,        XXXXXXX,
-    KC_HOME,        KC_LEFT,      KC_DOWN,      KC_RGHT,          KC_END,            KC_RGUI,         KC_RSFT,           KC_RCTL,         KC_LALT,        KC_RALT,
-  XXXXXXX,        XXXXXXX,      XXXXXXX,      XXXXXXX,          XXXXXXX,          XXXXXXX,         XXXXXXX,           XXXXXXX,         XXXXXXX,        XXXXXXX,
-                                      KC_TAB,           KC_ENT,             _______,          _______
-)
+// Planck is like a split keyboard, beside for the last row
+static bool my_on_left_hand(keypos_t pos)
+{
+    return (pos.row < 3) || (pos.row == 3 && pos.col < 3) || (pos.row == 7 && pos.col > 2);
+}
 
-};
+// our shared 34 keys keymap
+#include "../common/keymap.h"
 
 /* plwnck rev6 RGB layout:
  * ----------------------------------
@@ -120,12 +68,17 @@ const rgblight_segment_t PROGMEM nav_layer[] = RGBLIGHT_LAYER_SEGMENTS(
     {0, 9, HSV_BLUE}
 );
 
+const rgblight_segment_t PROGMEM magic_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 9, RGB_CORAL}
+);
+
 const rgblight_segment_t * const PROGMEM my_rgb_layers[] = RGBLIGHT_LAYERS_LIST(
     [_QWERTY] = qwerty_layer,
     [_SYM] = sym_layer,
     [_NUM] = num_layer,
     [_FN] = fn_layer,
-    [_NAV] = nav_layer
+    [_NAV] = nav_layer,
+    [_MAGIC] = magic_layer
 );
 
 void keyboard_post_init_user(void) {
@@ -140,39 +93,6 @@ layer_state_t layer_state_set_user(layer_state_t state)
     rgblight_set_layer_state(_NUM, layer_state_cmp(state, _NUM));
     rgblight_set_layer_state(_FN, layer_state_cmp(state, _FN));
     rgblight_set_layer_state(_NAV, layer_state_cmp(state, _NAV));
+    rgblight_set_layer_state(_MAGIC, layer_state_cmp(state, _MAGIC));
     return state;
 }
-
-//
-// improve home row modifiers via achordion
-//
-
-#include "achordion.h"
-
-bool process_record_user(uint16_t keycode, keyrecord_t* record)
-{
-    if (!process_achordion(keycode, record)) {
-        return false;
-    }
-
-    return true;
-}
-
-void matrix_scan_user(void)
-{
-    achordion_task();
-}
-
-static bool planck_on_left_hand(keypos_t pos)
-{
-    // planck is like a split keyboard, beside for the last row
-    return (pos.row < 3) || (pos.row == 3 && pos.col < 3) || (pos.row == 7 && pos.col > 2);
-}
-
-bool achordion_chord(uint16_t tap_hold_keycode,
-                     keyrecord_t* tap_hold_record,
-                     uint16_t other_keycode,
-                     keyrecord_t* other_record)
-{
-    return planck_on_left_hand(tap_hold_record->event.key) != planck_on_left_hand(other_record->event.key);
-}
diff --git a/planck/rules.mk b/planck/rules.mk
index 842b067..b8d7cce 100644
--- a/planck/rules.mk
+++ b/planck/rules.mk
@@ -18,7 +18,7 @@ MAGIC_ENABLE = no
 DEBOUNCE_TYPE = asym_eager_defer_pk
 
 # add achordion to improve home row modifiers
-SRC += achordion.c
+SRC += ../common/achordion.c
 
 # build
 # qmk compile -kb planck/rev6_drop -km christoph-cullmann