Remove legacy USE_SERIAL define (#18292)

* Remove legacy USE_SERIAL define

* tidy up missed comments

keyboards/25keys/zinc/rev1/config.h

@@ -21,7 +21,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define TAPPING_TERM 100
 
 /* Use I2C or Serial */
-#define USE_SERIAL
 #define SOFT_SERIAL_PIN D2
 
 /* Select hand configuration */

keyboards/25keys/zinc/reva/config.h

@@ -21,7 +21,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define TAPPING_TERM 100
 
 /* Use I2C or Serial */
-#define USE_SERIAL
 #define SOFT_SERIAL_PIN D2
 
 /* Select hand configuration */

keyboards/40percentclub/25/config.h

@@ -18,7 +18,6 @@
 
 #include "config_common.h"
 
-#define USE_SERIAL
 /* serial.c configuration for split keyboard */
 #define SOFT_SERIAL_PIN D0
 

keyboards/40percentclub/6lit/config.h

@@ -18,8 +18,6 @@
 
 #include "config_common.h"
 
-#define USE_SERIAL
-
 /* serial.c configuration for split keyboard */
 #define SOFT_SERIAL_PIN D0
 

keyboards/40percentclub/foobar/config.h

@@ -18,8 +18,6 @@
 
 #include "config_common.h"
 
-#define USE_SERIAL
-
 /* serial.c configuration for split keyboard */
 #define SOFT_SERIAL_PIN D0
 

keyboards/40percentclub/half_n_half/config.h

@@ -43,7 +43,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
  */
 #define SOFT_SERIAL_PIN D0 // or D1, D2, D3, E6
-#define USE_SERIAL
 
 // #define BACKLIGHT_PIN B7
 // #define BACKLIGHT_BREATHING

keyboards/a_dux/config.h

@@ -59,9 +59,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Locking resynchronize hack */
 #define LOCKING_RESYNC_ENABLE
 
-/* Serial settings */
-#define USE_SERIAL
-
 /* serial.c configuration for split keyboard */
 #define SOFT_SERIAL_PIN D1
 

keyboards/adkb96/keymaps/default/config.h

@@ -20,9 +20,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
 
-#define USE_SERIAL
 //#define USE_I2C
 
 /* Select hand configuration */

keyboards/alt34/rev1/config.h

@@ -38,9 +38,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Locking resynchronize hack */
 #define LOCKING_RESYNC_ENABLE
 
-/* Use I2C or Serial, not both */
 #define USE_I2C
-// #define USE_SERIAL
 
 /* Select hand configuration */
 #define EE_HANDS

keyboards/arabica37/rev1/config.h

@@ -18,7 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
 #define SOFT_SERIAL_PIN D2
 
 /* key matrix size */

keyboards/biacco42/ergo42/keymaps/biacco-biacco/config.h

@@ -20,9 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
 // #define USE_I2C
 
 /* Select hand configuration */

keyboards/biacco42/ergo42/keymaps/biacco-macOS/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/biacco42/ergo42/keymaps/biacco-underglow/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/biacco42/ergo42/keymaps/biacco-winjp/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/biacco42/ergo42/keymaps/biacco/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/biacco42/ergo42/keymaps/default-illustrator/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/biacco42/ergo42/keymaps/default-underglow/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/biacco42/ergo42/keymaps/default/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/biacco42/ergo42/keymaps/hdbx/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/biacco42/ergo42/keymaps/ichi-t/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/biacco42/ergo42/keymaps/koba/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/biacco42/ergo42/keymaps/shinze/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/biacco42/ergo42/keymaps/yshrsmz/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/boardsource/microdox/config.h

@@ -29,7 +29,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // wiring of each half
 #define MATRIX_COL_PINS \
     { F4, F5, F6, F7, B1 }
-#define USE_SERIAL
+
 #define SOFT_SERIAL_PIN D2
 /* define if matrix has ghost */
 //#define MATRIX_HAS_GHOST

keyboards/cradio/config.h

@@ -43,8 +43,6 @@
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 #define DEBOUNCE 5
 
-/* Serial settings */
-#define USE_SERIAL
 /* serial.c configuration for split keyboard */
 #define SOFT_SERIAL_PIN D2
 

keyboards/crkbd/config.h

@@ -61,5 +61,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_LAYER
 //#define NO_ACTION_TAPPING
 //#define NO_ACTION_ONESHOT
-
-#define USE_SERIAL

keyboards/crkbd/keymaps/dsanchezseco/config.h

@@ -20,9 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-//#define USE_MATRIX_I2C
-#define USE_SERIAL
-
 /* Select hand configuration */
 
 // #define MASTER_LEFT

keyboards/crkbd/keymaps/joe_scotto/config.h

@@ -61,6 +61,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_TAPPING
 //#define NO_ACTION_ONESHOT
 
-#define USE_SERIAL
-
 #define TAPPING_TERM 50

keyboards/crkbd/r2g/config.h

@@ -19,7 +19,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
 #define SOFT_SERIAL_PIN D2
 
 /* ws2812 RGB LED */

keyboards/crkbd/rev1/config.h

@@ -18,7 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
 #define SOFT_SERIAL_PIN D2
 
 /* ws2812 RGB LED */

keyboards/deltasplit75/keymaps/default/config.h

@@ -18,8 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 // #define EE_HANDS

keyboards/deltasplit75/keymaps/itsaferbie/config.h

@@ -16,8 +16,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 
-#define USE_SERIAL
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 // #define EE_HANDS

keyboards/deltasplit75/keymaps/mbsurfer/config.h

@@ -16,8 +16,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 
-#define USE_SERIAL
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 // #define EE_HANDS

keyboards/deltasplit75/keymaps/protosplit/config.h

@@ -16,8 +16,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 
-#define USE_SERIAL
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 // #define EE_HANDS

keyboards/dm9records/ergoinu/config.h

@@ -21,8 +21,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "config_common.h"
 
-#define USE_SERIAL
-
 /* serial.c configuration for split keyboard */
 #define SOFT_SERIAL_PIN D2
 

keyboards/draculad/config.h

@@ -29,8 +29,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define DEBOUNCE 5
 
-
-#define USE_SERIAL
 #define SOFT_SERIAL_PIN D2
 
 #ifdef OLED_ENABLE

keyboards/ergoslab/keymaps/default/config.h

@@ -17,11 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 // #define MASTER_LEFT

keyboards/ergotravel/keymaps/default/config.h

@@ -17,11 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/ergotravel/keymaps/ian/config.h

@@ -17,11 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 // #define MASTER_LEFT

keyboards/ergotravel/keymaps/jarred/config.h

@@ -17,9 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-// #define USE_SERIAL
 #define USE_I2C
 
 /* Select hand configuration */

keyboards/ergotravel/keymaps/rs/config.h

@@ -17,11 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/ergotravel/keymaps/via/config.h

@@ -17,11 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/ergotravel/keymaps/yanfali/config.h

@@ -17,11 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/ferris/sweep/config.h

@@ -42,8 +42,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 #define DEBOUNCE 5
 
-/* Serial settings */
-#define USE_SERIAL
 /* serial.c configuration for split keyboard */
 #define SOFT_SERIAL_PIN D2
 

keyboards/fortitude60/keymaps/default/config.h

@@ -16,5 +16,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #pragma once
-
-#define USE_SERIAL

keyboards/fortitude60/keymaps/via/config.h

@@ -16,5 +16,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #pragma once
-
-#define USE_SERIAL

keyboards/fungo/rev1/config.h

@@ -20,8 +20,6 @@
 
 #include "config_common.h"
 
-/* Use I2C or Serial, not both */
-#define USE_SERIAL
 #define SOFT_SERIAL_PIN D3	// RX8
 
 /* select keyboard  master board  - I2C or Serial communication master    */

keyboards/handwired/brain/keymaps/klackygears/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-//#define USE_SERIAL
-
 #define PERMISSIVE_HOLD
 #define TAPPING_TERM 150
 #define IGNORE_MOD_TAP_INTERRUPT

keyboards/handwired/chiron/keymaps/default/config.h

@@ -16,7 +16,6 @@
 
 #pragma once
 
-#define USE_SERIAL
 #define MASTER_RIGHT
 //#define MASTER_LEFT
 

keyboards/handwired/dactyl_manuform/3x5_3/config.h

@@ -18,10 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "config_common.h"
 
-// Communication
-// #define USE_I2C
-#define USE_SERIAL
-
 /* key matrix size */
 // Rows are doubled-up
 #define MATRIX_ROWS 8

keyboards/handwired/dactyl_manuform/4x5/keymaps/default/config.h

@@ -20,10 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-#define USE_SERIAL
-//#define USE_I2C
-
 /* Select hand configuration */
 //#define MASTER_LEFT
 //#define MASTER_RIGHT

keyboards/handwired/dactyl_manuform/4x5/keymaps/dvorak/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 // #define MASTER_LEFT

keyboards/handwired/dactyl_manuform/4x5/keymaps/ibnuda/config.h

@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/handwired/dactyl_manuform/4x6/keymaps/default/config.h

@@ -20,10 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-#define USE_SERIAL
-//#define USE_I2C
-
 /* Select hand configuration */
 //#define MASTER_LEFT
 //#define MASTER_RIGHT

keyboards/handwired/dactyl_manuform/5x6/keymaps/333fred/config.h

@@ -22,7 +22,6 @@
 
 #pragma once
 
-#define USE_SERIAL
 #define EE_HANDS
 
 #undef TAPPING_TERM

keyboards/handwired/dactyl_manuform/5x6/keymaps/default/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define MASTER_LEFT
 //#define MASTER_RIGHT
 

keyboards/handwired/dactyl_manuform/5x6/keymaps/impstyle/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 //#define EE_HANDS

keyboards/handwired/dactyl_manuform/5x6/keymaps/rishka/config.h

@@ -18,8 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-
-// #define USE_SERIAL
 #define USE_I2C
 // #define MASTER_LEFT
 // #define MASTER_RIGHT

keyboards/handwired/dactyl_manuform/5x6/keymaps/squirrel/config.h

@@ -18,9 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-
-#define USE_SERIAL
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 //#define EE_HANDS

keyboards/handwired/dactyl_manuform/5x6/keymaps/swedish/config.h

@@ -18,9 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-
-#define USE_SERIAL
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 //#define EE_HANDS

keyboards/handwired/dactyl_manuform/5x6/keymaps/thattolleyguy/config.h

@@ -18,10 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-
-#define USE_SERIAL
-// #define USE_I2C
-
 // #define MASTER_LEFT
 // #define MASTER_RIGHT
 #define EE_HANDS

keyboards/handwired/dactyl_manuform/5x6/keymaps/uqs/config.h

@@ -2,8 +2,6 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 #pragma once
 
-#define USE_SERIAL
-
 #define RGBLED_NUM 12
 #define RGBLED_SPLIT {6,6}
 #define RGBLIGHT_LIMIT_VAL 127

keyboards/handwired/dactyl_manuform/5x6_2_5/keymaps/default/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define EE_HANDS
 
 #define KINETIC_SPEED

keyboards/handwired/dactyl_manuform/5x6_5/keymaps/333fred/config.h

@@ -22,7 +22,6 @@
 
 #pragma once
 
-#define USE_SERIAL
 #define EE_HANDS
 
 #undef TAPPING_TERM

keyboards/handwired/dactyl_manuform/5x6_5/keymaps/cykedev/config.h

@@ -25,7 +25,6 @@
 #undef BOOTMAGIC_LITE_COLUMN_RIGHT
 
 
-#define USE_SERIAL
 #define SOFT_SERIAL_PIN D2
 #define EE_HANDS
 // #define SPLIT_USB_DETECT

keyboards/handwired/dactyl_manuform/5x6_5/keymaps/default/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define EE_HANDS
 
 #define KINETIC_SPEED

keyboards/handwired/dactyl_manuform/5x6_5/keymaps/via/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define EE_HANDS
 
 #define KINETIC_SPEED

keyboards/handwired/dactyl_manuform/5x7/keymaps/default/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define MASTER_LEFT
 //#define MASTER_RIGHT
 

keyboards/handwired/dactyl_manuform/5x7/keymaps/via/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define MASTER_LEFT
 //#define MASTER_RIGHT
 

keyboards/handwired/dactyl_manuform/6x6/keymaps/default/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define MASTER_LEFT
 //#define MASTER_RIGHT
 

keyboards/handwired/dactyl_manuform/dmote/62key/keymaps/default/config.h

@@ -1,5 +1,3 @@
 #pragma once
 
-#define USE_SERIAL
-
 #define EE_HANDS

keyboards/handwired/dactyl_promicro/keymaps/default/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define MASTER_RIGHT
 // #define MASTER_RIGHT
 //#define EE_HANDS

keyboards/handwired/dactyl_promicro/keymaps/impstyle/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define MASTER_RIGHT
 // #define MASTER_RIGHT
 //#define EE_HANDS

keyboards/handwired/elrgo_s/keymaps/default/config.h

@@ -16,7 +16,5 @@
 
 #pragma once
 
-#define USE_SERIAL
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT

keyboards/handwired/ks63/config.h

@@ -68,5 +68,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 #define MASTER_LEFT
-#define USE_SERIAL
 

keyboards/handwired/myskeeb/config.h

@@ -15,7 +15,6 @@
 
 // Comunication and Split Detection
 
-#define USE_SERIAL
 #define SOFT_SERIAL_PIN D3
 #define SELECT_SOFT_SERIAL_SPEED 1
 #define SPLIT_USB_DETECT

keyboards/handwired/not_so_minidox/config.h

@@ -31,8 +31,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROW_PINS { D7, E6, B4, B5 }
 #define MATRIX_COL_PINS { B6, B2, B3, B1, F7, D4 }
 
-#define USE_SERIAL
-
 /*
  * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
  */

keyboards/handwired/qc60/keymaps/wntrmln/config.h

@@ -1,5 +1,3 @@
 #pragma once
 
-#define USE_SERIAL
-
 #define MASTER_LEFT

keyboards/handwired/split89/config.h

@@ -54,7 +54,6 @@ COLS = number of cols per side which curently needs to be equal so there are bla
  * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
  */
 #define SOFT_SERIAL_PIN D0  // or D1, D2, D3, E6
-#define USE_SERIAL
 
 //#define LED_NUM_LOCK_PIN B0
 //#define LED_CAPS_LOCK_PIN B1

keyboards/handwired/stef9998/split_5x7/keymaps/default/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-// #define USE_SERIAL
 #define USE_I2C
 
 /* Select hand configuration */

keyboards/handwired/stef9998/split_5x7/keymaps/stef9998/config.h

@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-//#define USE_SERIAL
 #define USE_I2C
 
 /* Select hand configuration */

keyboards/handwired/unk/keymaps/default/config.h

@@ -18,8 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define USE_SERIAL
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 // #define EE_HANDS

keyboards/handwired/unk/rev1/config.h

@@ -42,7 +42,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
  */
 
-#define USE_SERIAL
 #define SOFT_SERIAL_PIN D0
 
 /* define if matrix has ghost */

keyboards/handwired/xealous/config.h

@@ -19,7 +19,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #pragma once
 #include "config_common.h"
 
-/* Use I2C or Serial, not both */
 #define USE_I2C
 #define SCL_CLOCK  800000UL
 

keyboards/helix/pico/config.h

@@ -22,10 +22,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define TAPPING_FORCE_HOLD
 #define TAPPING_TERM 100
 
-/* Use I2C or Serial */
-#define USE_SERIAL
-//#define USE_MATRIX_I2C
-
 /* Soft Serial defines */
 #define SOFT_SERIAL_PIN D2
 #define SERIAL_SLAVE_BUFFER_LENGTH  ((MATRIX_ROWS)/2)

keyboards/helix/rev2/config.h

@@ -25,10 +25,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define SPLIT_LAYER_STATE_ENABLE
 #define SPLIT_LED_STATE_ENABLE
 
-/* Use I2C or Serial */
-#define USE_SERIAL
-//#define USE_MATRIX_I2C
-
 /* Soft Serial defines */
 #define SOFT_SERIAL_PIN D2
 #define SERIAL_USE_MULTI_TRANSACTION

keyboards/ibnuda/squiggle/config.h

@@ -19,8 +19,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "config_common.h"
 
-#define USE_SERIAL
-
 /*
  * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
  */

keyboards/jian/rev1/config.h

@@ -29,8 +29,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROW_PINS { D3, D2, E6, B4 }
 #define MATRIX_COL_PINS { F4, F5, F6, F7, B1, B3, B2 }
 
-/* Use I2C or Serial, not both */
-// #define USE_SERIAL
 #define USE_I2C
 
 /* Select hand configuration */

keyboards/jian/rev2/config.h

@@ -29,8 +29,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROW_PINS { F4, F5, B1, B3 }
 #define MATRIX_COL_PINS { D3, D2, B4, F6, F7, B2 }
 
-//#define USE_I2C
-#define USE_SERIAL
 #define SOFT_SERIAL_PIN D1
 
 //#define EE_HANDS

keyboards/kagizaraya/scythe/config.h

@@ -114,7 +114,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // #define BOOTMAGIC_LITE_COLUMN 0
 
 /* Serial settings */
-#define USE_SERIAL
 //#define EE_HANDS
 #define I2C_MASTER_LEFT
 //#define I2C_MASTER_RIGHT

keyboards/kakunpc/suihankey/alpha/config.h

@@ -35,8 +35,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 #define MATRIX_ROW_PINS { F4, F5, F6, F7 }
 #define MATRIX_COL_PINS { D4, C6, D7, E6, B4 }
-// #define USE_I2C
-// #undef USE_SERIAL
 
 /* COL2ROW, ROW2COL*/
 #define DIODE_DIRECTION COL2ROW

keyboards/kakunpc/suihankey/rev1/config.h

@@ -35,8 +35,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 #define MATRIX_ROW_PINS { D4, C6, D7, E6, B4 }
 #define MATRIX_COL_PINS { F4, F5, F6, F7 }
-//#define USE_I2C
-//#undef USE_SERIAL
 
 /* COL2ROW, ROW2COL*/
 #define DIODE_DIRECTION COL2ROW

keyboards/kakunpc/suihankey/split/alpha/config.h

@@ -36,7 +36,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROW_PINS { F4, F5, F6, F7 }
 #define MATRIX_COL_PINS { D4, C6, D7, E6, B4 }
 #define USE_I2C
-#undef USE_SERIAL
 
 /* COL2ROW, ROW2COL*/
 #define DIODE_DIRECTION COL2ROW

keyboards/kakunpc/suihankey/split/rev1/config.h

@@ -36,7 +36,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROW_PINS { D4, C6, D7, E6, B4 }
 #define MATRIX_COL_PINS { F4, F5, F6, F7 }
 #define USE_I2C
-#undef USE_SERIAL
 
 /* COL2ROW, ROW2COL*/
 #define DIODE_DIRECTION COL2ROW

keyboards/kapl/rev1/config.h

@@ -18,9 +18,6 @@
 #define DEBOUNCE 5
 
 
-/* Serial settings */
-#define USE_SERIAL
-
 /* serial.c configuration for split keyboard */
 #define SOFT_SERIAL_PIN D2
 

keyboards/keebio/bfo9000/keymaps/abstractkb/config.h

@@ -25,11 +25,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLIGHT_ANIMATIONS
 #define RGBLIGHT_SLEEP
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/keebio/bfo9000/keymaps/andylikescandy6x18/config.h

@@ -23,11 +23,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "config_common.h"
 
-/* Use I2C or Serial, not both */
-
-#define USE_SERIAL
-// #define USE_I2C
-
 /* Select hand configuration */
 
 #define MASTER_LEFT

keyboards/keebio/bfo9000/keymaps/insertsnideremarks/config.h

@@ -20,9 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-// #define USE_SERIAL
 #define USE_I2C
 
 /* Select hand configuration */

keyboards/keebio/bfo9000/keymaps/tuesdayjohn/config.h

@@ -20,9 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
-
-// #define USE_SERIAL
 #define USE_I2C
 
 /* Select hand configuration */

keyboards/keebio/fourier/keymaps/default/config.h

@@ -20,5 +20,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* Use I2C or Serial, not both */
 // #define USE_I2C