Merge branch 'master' into taamas

7 files changed, 351 insertions, 0 deletions

diff --git a/keyboards/nopunin10did/kastenwagen48/keymaps/default/keymap.c b/keyboards/nopunin10did/kastenwagen48/keymaps/default/keymap.c
new file mode 100644
index 0000000000..3ec11064f9
--- /dev/null
+++ b/keyboards/nopunin10did/kastenwagen48/keymaps/default/keymap.c
@@ -0,0 +1,93 @@
+/* Copyright 2022 W. Alex Ronke, a.k.a. NoPunIn10Did (w.alex.ronke@gmail.com)
+ *
+ * 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
+
+#define L2_SPC      LT(2,KC_SPC)
+#define L3_SPC      LT(3,KC_SPC)
+#define RWINALT     RALT_T(KC_RGUI)
+#define ISO_LT      KC_NUBS
+#define ISO_GT      LSFT(KC_NUBS)
+
+bool is_alt_tab_active = false;
+uint16_t alt_tab_timer = 0;
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+[0] = LAYOUT_all(
+
+    KC_ESC ,KC_Q   ,KC_W   ,KC_E   ,KC_R   ,KC_T   ,KC_Y   ,KC_U   ,KC_I   ,KC_O   ,KC_P   ,KC_LBRC,KC_BSPC      , KC_DEL ,
+    KC_TAB   ,KC_A   ,KC_S   ,KC_D   ,KC_F   ,KC_G   ,KC_H   ,KC_J   ,KC_K   ,KC_L   ,KC_SCLN,KC_QUOT,KC_ENT     , KC_PGUP,
+    KC_LSPO      ,KC_Z   ,KC_X   ,KC_C   ,KC_V   ,KC_B   ,KC_N   ,KC_M   ,KC_COMM,KC_DOT ,KC_SLSH,KC_RSPC ,KC_UP , KC_PGDN,
+    KC_LCTL  ,KC_LALT  ,MO(2)  ,L2_SPC               ,L3_SPC           ,MO(3)  ,RWINALT  ,MO(1)   ,KC_LEFT,KC_DOWN,KC_RGHT 
+    ),
+[1] = LAYOUT_all(
+    QK_BOOT  ,KC_F1  ,KC_F2  ,KC_F3  ,KC_F4  ,KC_F5  ,KC_F6  ,KC_F7  ,KC_F8  ,KC_F9  ,KC_F10 ,KC_RBRC,KC_DEL       , KC_INS ,
+    KC_CAPS  ,KC_F11 ,KC_F12 ,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX    , KC_HOME,
+    _______      ,XXXXXXX,XXXXXXX,KC_PSCR,KC_SLCK,KC_PAUS,KC_INS ,KC_APP ,KC_LGUI,KC_RGUI,XXXXXXX,_______ ,KC_PGUP,KC_END ,
+    KC_RCTL  ,_______  ,_______,XXXXXXX              ,XXXXXXX          ,_______,_______  ,_______ ,KC_HOME,KC_PGDN,KC_END  
+    ),
+[2] = LAYOUT_all(
+    KC_GRV ,KC_1   ,KC_2   ,KC_3   ,KC_4   ,KC_5   ,KC_6   ,KC_7   ,KC_8   ,KC_9   ,KC_0   ,KC_MINS,KC_EQL       , XXXXXXX,
+    KC_TILD  ,KC_EXLM,KC_AT  ,KC_HASH,KC_DLR ,KC_PERC,KC_CIRC,KC_AMPR,KC_ASTR,KC_UNDS,KC_LBRC,KC_RBRC,KC_BSLS    , XXXXXXX,
+    _______      ,ISO_LT ,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,_______ ,XXXXXXX,XXXXXXX,
+    _______  ,_______  ,_______,XXXXXXX              ,XXXXXXX          ,_______,_______  ,_______ ,XXXXXXX,XXXXXXX,XXXXXXX 
+    ),
+[3] = LAYOUT_all(
+    KC_TILD,KC_EXLM,KC_AT  ,KC_HASH,KC_DLR ,KC_PERC,KC_CIRC,KC_AMPR,KC_ASTR,KC_LPRN,KC_RPRN,KC_UNDS,KC_PLUS      , XXXXXXX,
+    _______  ,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,KC_LCBR,KC_RCBR,KC_PIPE    , XXXXXXX,
+    _______      ,ISO_GT ,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,_______ ,XXXXXXX,XXXXXXX,
+    _______  ,_______  ,_______,XXXXXXX              ,XXXXXXX          ,_______,_______  ,_______ ,XXXXXXX,XXXXXXX,XXXXXXX 
+    )
+};
+
+bool encoder_update_user(uint8_t index, bool clockwise) {
+    
+    if (index == 0) {
+        if (clockwise) {
+            tap_code(KC_VOLU);
+        }
+        else {
+            tap_code(KC_VOLD);
+        }
+    }
+    else if (index == 1) {
+        if (clockwise) {
+            if (!is_alt_tab_active) {
+                is_alt_tab_active = true;
+                register_code(KC_LALT);
+            }
+            alt_tab_timer = timer_read();
+            tap_code16(KC_TAB);
+        }
+        else {
+            alt_tab_timer = timer_read();
+            tap_code16(S(KC_TAB));
+        }
+    }
+    
+    return false;
+}
+
+void matrix_scan_user(void) {
+    
+    if (is_alt_tab_active) {
+        if (timer_elapsed(alt_tab_timer) > 1250) {
+            unregister_code(KC_LALT);
+            is_alt_tab_active = false;
+        }
+    }
+}
diff --git a/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/config.h b/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/config.h
new file mode 100644
index 0000000000..c6de1b416c
--- /dev/null
+++ b/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/config.h
@@ -0,0 +1,31 @@
+/* Copyright 2021, 2022 Jonavin Eng
+ *
+ * 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
+
+#define TAPPING_TOGGLE 2
+// TT set to two taps
+
+/*  Handle GRAVESC combo keys */
+#define GRAVE_ESC_ALT_OVERRIDE
+    //Always send Escape if Alt is pressed
+#define GRAVE_ESC_CTRL_OVERRIDE
+    //Always send Escape if Control is pressed
+
+#define TAPPING_TERM 180
+
+#define ENCODER_DIRECTION_FLIP  // compensate for opposite encoder direction
+#define ENCODER_DEFAULTACTIONS_INDEX 1  // Set default encoder functions to encoder 1
diff --git a/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/keymap.c b/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/keymap.c
new file mode 100644
index 0000000000..29c12b0419
--- /dev/null
+++ b/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/keymap.c
@@ -0,0 +1,67 @@
+/* Copyright 2021 W. Alex Ronke, a.k.a. NoPunIn10Did (w.alex.ronke@gmail.com)
+ * Copyright 2022 Jonavin Eng, @Jonavin
+ *
+ * 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
+#include "jonavin.h"
+
+#define L2_SPC      LT(2,KC_SPC)
+#define L3_SPC      LT(3,KC_SPC)
+#define RWINALT     RALT_T(KC_RGUI)
+#define ISO_LT      KC_NUBS
+#define ISO_GT      LSFT(KC_NUBS)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+[_BASE] = LAYOUT_48(
+
+    KC_TAB      ,KC_Q   ,KC_W   ,KC_E   ,KC_R   ,KC_T   ,KC_Y   ,KC_U   ,KC_I   ,KC_O   ,KC_P   ,KC_LBRC,KC_BSPC  , KC_DEL ,
+    TT(_RAISE)  ,KC_A   ,KC_S   ,KC_D   ,KC_F   ,KC_G   ,KC_H   ,KC_J   ,KC_K   ,KC_L   ,KC_SCLN,KC_QUOT,KC_ENT   , KC_PGUP,
+    KC_LSFTCAPS ,KC_Z   ,KC_X   ,KC_C   ,KC_V   ,KC_B   ,KC_N   ,KC_M   ,KC_COMM,KC_DOT ,KC_SLSH, KC_SFTENT ,KC_UP , KC_PGDN,
+    KC_LCTL  ,KC_LALT  ,KC_LGUI ,KC_SPC       ,L3_SPC           ,MO(_LOWER) ,MO(_FN1) ,KC_RCTL   ,KC_LEFT,KC_DOWN,KC_RGHT
+    ),
+[_FN1] = LAYOUT_48(
+    KC_GRV  ,KC_F1  ,KC_F2  ,KC_F3  ,KC_F4  ,KC_F5  ,KC_F6  ,KC_F7  ,KC_F8  ,KC_F9  ,KC_F10 ,KC_RBRC,KC_DEL       , KC_INS ,
+    KC_CAPS ,KC_F11 ,KC_F12 ,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,KC_PSCR, KC_SLCK, KC_PAUS,XXXXXXX,XXXXXXX,XXXXXXX    , KC_HOME,
+    _______ ,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,KC_NLCK ,XXXXXXX ,XXXXXXX,XXXXXXX,XXXXXXX,_______ ,KC_PGUP,    KC_END ,
+    _______  ,_______  ,KC_WINLCK,XXXXXXX              ,XXXXXXX          ,_______,_______  ,_______ ,KC_HOME,KC_PGDN,KC_END
+    ),
+[_LOWER] = LAYOUT_48(
+    KC_TILD  ,KC_EXLM, KC_AT, KC_HASH,KC_DLR,KC_PERC,KC_CIRC, KC_AMPR, KC_ASTR,KC_LPRN, KC_RPRN,KC_MINS,KC_EQL     , RESET,
+    _______  ,KC_MINS, KC_EQL,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,KC_QUES,KC_SLSH,KC_PIPE,KC_BSLS,KC_TILD,  XXXXXXX   ,XXXXXXX,
+    _______  ,KC_UNDS, KC_PLUS,XXXXXXX,KC_LCBR, KC_RCBR, KC_LBRC, KC_RBRC,KC_LT,KC_GT, XXXXXXX ,_______ ,XXXXXXX,XXXXXXX,
+    _______  ,_______  ,_______,XXXXXXX              ,XXXXXXX          ,_______,_______  ,_______ ,XXXXXXX,XXXXXXX,XXXXXXX
+    ),
+[_RAISE] = LAYOUT_48(
+ 	KC_ESC, KC_HOME,KC_UP,  KC_END, KC_PGUP,KC_PMNS,KC_PPLS,KC_P7,  KC_P8,  KC_P9,  KC_P0,  KC_PMNS, KC_PEQL     , KC_TSTOG,
+  	TT(_RAISE),KC_LEFT,KC_DOWN,KC_RIGHT,KC_PGDN,KC_PSLS,KC_TAB,KC_P4, KC_P5,  KC_P6,  KC_PDOT,KC_PAST,KC_PENT    , XXXXXXX,
+  	_______,   XXXXXXX,KC_DEL, KC_INS, KC_NO,  KC_PAST,KC_P0,  KC_P1,  KC_P2,  KC_P3,  KC_PSLS ,_______,   XXXXXXX,XXXXXXX,
+    _______  ,_______  ,_______,KC_BSPC              ,XXXXXXX          ,_______,_______  ,_______ ,XXXXXXX,XXXXXXX,XXXXXXX
+    )
+};
+
+#ifdef ENCODER_ENABLE       // Encoder Functionality
+bool encoder_update_keymap(uint8_t index, bool clockwise) {
+    switch (index) {
+        case 0:         // Top left encoder
+            encoder_action_volume(clockwise);
+            break;
+        default:
+            break;
+    }
+    return true;  // fall to encoder_update_user and encoder_update_kb definitions
+}
+#endif
diff --git a/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/readme.md b/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/readme.md
new file mode 100644
index 0000000000..885e6b0dd7
--- /dev/null
+++ b/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/readme.md
@@ -0,0 +1,54 @@
+Jonavin Kastenwagen 48 Keymap
+Designed to match my other keymaps
+
+NOTE: Uses userpace user/jonavin
+
+Feature changes from Default
+  - Bottom row mapping LCtrl, LAlt, LGui, spacebars, MO(2)/LOWER, MO(1)/FN, RCtrl
+  - CAPS as MO(3)/RAISE - tap to toggle
+  - numpad in MO(3) layer
+  - double tap L Shift for CAPS
+  - RESET moved to under encoder in MO(2)
+  - implement Win Key Lock 
+  - GRV Escape overides
+  - ENCODERS
+    - TOP LEFT
+      - Volume up/down
+    - TOP RIGHT
+      - Left Shift held - change layers
+      - Right Shift held - Page Up/Down
+      - Left Ctrl held - navigate next/prev words
+      - Left Alt held - change media next/prev track
+      - RAISE + Encode push toggles between volume change and tab scrolling
+    - ENCODER_DIRECTION_FLIP has been defined to avoid issues with encoder going in opposition direction
+
+OPTIONS in rules.mk
+---------------------------------------
+
+STARTUP_NUMLOCK_ON = yes
+- turns on NUMLOCK by default
+
+ENCODER_DEFAULTACTIONS_ENABLE = yes
+- Enabled default encoder funtions
+- When enabled, use this in the keymap for an additional encoder processing 
+-   bool encoder_update_keymap(uint8_t index, bool clockwise)
+  
+OPTION: set ENCODER_DEFAULTACTIONS_INDEX in config.h to the encoder number if the encoder is not index 0  -- set to 1 for top right encoder
+
+TD_LSFT_CAPSLOCK_ENABLE = yes
+- This will enable double tap on Left Shift to toggle CAPSLOCK
+-   KC_LSFTCAPS to bind to left Shift to enable feature
+-   KC_LSFTCAPSWIN does the same thing but will not turn on CAPS when Win Lkey is disabled
+    
+INVERT_NUMLOCK_INDICATOR
+- inverts the Num lock indicator, LED is on when num lock is off
+
+ALTTAB_SCROLL_ENABLE
+- When ENCODER_DEFAULTACTIONS_ENABLE = yes, 
+    Enables Alt-Tab scrolling functions in default encoder, 
+    bind KS_TSTOG to a key to enable/disable Alt-Tab vs Volume control
+- When defining your own encoder functions use encoder_action_alttabscroll(bool clockwise) to assign the encodr action
+
+
+Layout
+![image](https://user-images.githubusercontent.com/71780717/128580303-5d660a5f-1420-4e38-b40a-212573496b1c.png)
diff --git a/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/rules.mk b/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/rules.mk
new file mode 100644
index 0000000000..97ccf0c354
--- /dev/null
+++ b/keyboards/nopunin10did/kastenwagen48/keymaps/jonavin/rules.mk
@@ -0,0 +1,11 @@
+VIA_ENABLE = yes            # VIA support
+LTO_ENABLE = yes            #
+
+TAP_DANCE_ENABLE = yes
+
+TD_LSFT_CAPSLOCK_ENABLE = yes
+STARTUP_NUMLOCK_ON = yes
+
+ENCODER_DEFAULTACTIONS_ENABLE = yes
+INVERT_NUMLOCK_INDICATOR = yes
+ALTTAB_SCROLL_ENABLE = yes
diff --git a/keyboards/nopunin10did/kastenwagen48/keymaps/via/keymap.c b/keyboards/nopunin10did/kastenwagen48/keymaps/via/keymap.c
new file mode 100644
index 0000000000..3ec11064f9
--- /dev/null
+++ b/keyboards/nopunin10did/kastenwagen48/keymaps/via/keymap.c
@@ -0,0 +1,93 @@
+/* Copyright 2022 W. Alex Ronke, a.k.a. NoPunIn10Did (w.alex.ronke@gmail.com)
+ *
+ * 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
+
+#define L2_SPC      LT(2,KC_SPC)
+#define L3_SPC      LT(3,KC_SPC)
+#define RWINALT     RALT_T(KC_RGUI)
+#define ISO_LT      KC_NUBS
+#define ISO_GT      LSFT(KC_NUBS)
+
+bool is_alt_tab_active = false;
+uint16_t alt_tab_timer = 0;
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+[0] = LAYOUT_all(
+
+    KC_ESC ,KC_Q   ,KC_W   ,KC_E   ,KC_R   ,KC_T   ,KC_Y   ,KC_U   ,KC_I   ,KC_O   ,KC_P   ,KC_LBRC,KC_BSPC      , KC_DEL ,
+    KC_TAB   ,KC_A   ,KC_S   ,KC_D   ,KC_F   ,KC_G   ,KC_H   ,KC_J   ,KC_K   ,KC_L   ,KC_SCLN,KC_QUOT,KC_ENT     , KC_PGUP,
+    KC_LSPO      ,KC_Z   ,KC_X   ,KC_C   ,KC_V   ,KC_B   ,KC_N   ,KC_M   ,KC_COMM,KC_DOT ,KC_SLSH,KC_RSPC ,KC_UP , KC_PGDN,
+    KC_LCTL  ,KC_LALT  ,MO(2)  ,L2_SPC               ,L3_SPC           ,MO(3)  ,RWINALT  ,MO(1)   ,KC_LEFT,KC_DOWN,KC_RGHT 
+    ),
+[1] = LAYOUT_all(
+    QK_BOOT  ,KC_F1  ,KC_F2  ,KC_F3  ,KC_F4  ,KC_F5  ,KC_F6  ,KC_F7  ,KC_F8  ,KC_F9  ,KC_F10 ,KC_RBRC,KC_DEL       , KC_INS ,
+    KC_CAPS  ,KC_F11 ,KC_F12 ,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX    , KC_HOME,
+    _______      ,XXXXXXX,XXXXXXX,KC_PSCR,KC_SLCK,KC_PAUS,KC_INS ,KC_APP ,KC_LGUI,KC_RGUI,XXXXXXX,_______ ,KC_PGUP,KC_END ,
+    KC_RCTL  ,_______  ,_______,XXXXXXX              ,XXXXXXX          ,_______,_______  ,_______ ,KC_HOME,KC_PGDN,KC_END  
+    ),
+[2] = LAYOUT_all(
+    KC_GRV ,KC_1   ,KC_2   ,KC_3   ,KC_4   ,KC_5   ,KC_6   ,KC_7   ,KC_8   ,KC_9   ,KC_0   ,KC_MINS,KC_EQL       , XXXXXXX,
+    KC_TILD  ,KC_EXLM,KC_AT  ,KC_HASH,KC_DLR ,KC_PERC,KC_CIRC,KC_AMPR,KC_ASTR,KC_UNDS,KC_LBRC,KC_RBRC,KC_BSLS    , XXXXXXX,
+    _______      ,ISO_LT ,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,_______ ,XXXXXXX,XXXXXXX,
+    _______  ,_______  ,_______,XXXXXXX              ,XXXXXXX          ,_______,_______  ,_______ ,XXXXXXX,XXXXXXX,XXXXXXX 
+    ),
+[3] = LAYOUT_all(
+    KC_TILD,KC_EXLM,KC_AT  ,KC_HASH,KC_DLR ,KC_PERC,KC_CIRC,KC_AMPR,KC_ASTR,KC_LPRN,KC_RPRN,KC_UNDS,KC_PLUS      , XXXXXXX,
+    _______  ,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,KC_LCBR,KC_RCBR,KC_PIPE    , XXXXXXX,
+    _______      ,ISO_GT ,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,_______ ,XXXXXXX,XXXXXXX,
+    _______  ,_______  ,_______,XXXXXXX              ,XXXXXXX          ,_______,_______  ,_______ ,XXXXXXX,XXXXXXX,XXXXXXX 
+    )
+};
+
+bool encoder_update_user(uint8_t index, bool clockwise) {
+    
+    if (index == 0) {
+        if (clockwise) {
+            tap_code(KC_VOLU);
+        }
+        else {
+            tap_code(KC_VOLD);
+        }
+    }
+    else if (index == 1) {
+        if (clockwise) {
+            if (!is_alt_tab_active) {
+                is_alt_tab_active = true;
+                register_code(KC_LALT);
+            }
+            alt_tab_timer = timer_read();
+            tap_code16(KC_TAB);
+        }
+        else {
+            alt_tab_timer = timer_read();
+            tap_code16(S(KC_TAB));
+        }
+    }
+    
+    return false;
+}
+
+void matrix_scan_user(void) {
+    
+    if (is_alt_tab_active) {
+        if (timer_elapsed(alt_tab_timer) > 1250) {
+            unregister_code(KC_LALT);
+            is_alt_tab_active = false;
+        }
+    }
+}
diff --git a/keyboards/nopunin10did/kastenwagen48/keymaps/via/rules.mk b/keyboards/nopunin10did/kastenwagen48/keymaps/via/rules.mk
new file mode 100644
index 0000000000..43061db1dd
--- /dev/null
+++ b/keyboards/nopunin10did/kastenwagen48/keymaps/via/rules.mk
@@ -0,0 +1,2 @@
+VIA_ENABLE = yes
+LTO_ENABLE = yes
\ No newline at end of file