7 files changed, 716 insertions, 764 deletions

diff --git a/quantum/split_common/matrix.c b/quantum/split_common/matrix.c
index e0f094e34..313f7830b 100644
--- a/quantum/split_common/matrix.c
+++ b/quantum/split_common/matrix.c
@@ -30,24 +30,24 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "transport.h"
 
 #ifdef ENCODER_ENABLE
-  #include "encoder.h"
+#    include "encoder.h"
 #endif
 
 #if (MATRIX_COLS <= 8)
-#  define print_matrix_header() print("\nr/c 01234567\n")
-#  define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
-#  define matrix_bitpop(i) bitpop(matrix[i])
-#  define ROW_SHIFTER ((uint8_t)1)
+#    define print_matrix_header() print("\nr/c 01234567\n")
+#    define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
+#    define matrix_bitpop(i) bitpop(matrix[i])
+#    define ROW_SHIFTER ((uint8_t)1)
 #elif (MATRIX_COLS <= 16)
-#  define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
-#  define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
-#  define matrix_bitpop(i) bitpop16(matrix[i])
-#  define ROW_SHIFTER ((uint16_t)1)
+#    define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
+#    define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
+#    define matrix_bitpop(i) bitpop16(matrix[i])
+#    define ROW_SHIFTER ((uint16_t)1)
 #elif (MATRIX_COLS <= 32)
-#  define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
-#  define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
-#  define matrix_bitpop(i) bitpop32(matrix[i])
-#  define ROW_SHIFTER ((uint32_t)1)
+#    define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
+#    define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
+#    define matrix_bitpop(i) bitpop32(matrix[i])
+#    define ROW_SHIFTER ((uint32_t)1)
 #endif
 
 #define ERROR_DISCONNECT_COUNT 5
@@ -87,8 +87,8 @@ inline uint8_t matrix_rows(void) { return MATRIX_ROWS; }
 inline uint8_t matrix_cols(void) { return MATRIX_COLS; }
 
 bool matrix_is_modified(void) {
-  if (debounce_active()) return false;
-  return true;
+    if (debounce_active()) return false;
+    return true;
 }
 
 inline bool matrix_is_on(uint8_t row, uint8_t col) { return (matrix[row] & ((matrix_row_t)1 << col)); }
@@ -96,22 +96,22 @@ inline bool matrix_is_on(uint8_t row, uint8_t col) { return (matrix[row] & ((mat
 inline matrix_row_t matrix_get_row(uint8_t row) { return matrix[row]; }
 
 void matrix_print(void) {
-  print_matrix_header();
-
-  for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
-    phex(row);
-    print(": ");
-    print_matrix_row(row);
-    print("\n");
-  }
+    print_matrix_header();
+
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        phex(row);
+        print(": ");
+        print_matrix_row(row);
+        print("\n");
+    }
 }
 
 uint8_t matrix_key_count(void) {
-  uint8_t count = 0;
-  for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
-    count += matrix_bitpop(i);
-  }
-  return count;
+    uint8_t count = 0;
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        count += matrix_bitpop(i);
+    }
+    return count;
 }
 
 // matrix code
@@ -119,224 +119,224 @@ uint8_t matrix_key_count(void) {
 #ifdef DIRECT_PINS
 
 static void init_pins(void) {
-  for (int row = 0; row < MATRIX_ROWS; row++) {
-    for (int col = 0; col < MATRIX_COLS; col++) {
-      pin_t pin = direct_pins[row][col];
-      if (pin != NO_PIN) {
-        setPinInputHigh(pin);
-      }
+    for (int row = 0; row < MATRIX_ROWS; row++) {
+        for (int col = 0; col < MATRIX_COLS; col++) {
+            pin_t pin = direct_pins[row][col];
+            if (pin != NO_PIN) {
+                setPinInputHigh(pin);
+            }
+        }
     }
-  }
 }
 
 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
-  matrix_row_t last_row_value = current_matrix[current_row];
-  current_matrix[current_row] = 0;
+    matrix_row_t last_row_value = current_matrix[current_row];
+    current_matrix[current_row] = 0;
 
-  for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
-    pin_t pin = direct_pins[current_row][col_index];
-    if (pin != NO_PIN) {
-      current_matrix[current_row] |= readPin(pin) ? 0 : (ROW_SHIFTER << col_index);
+    for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+        pin_t pin = direct_pins[current_row][col_index];
+        if (pin != NO_PIN) {
+            current_matrix[current_row] |= readPin(pin) ? 0 : (ROW_SHIFTER << col_index);
+        }
     }
-  }
 
-  return (last_row_value != current_matrix[current_row]);
+    return (last_row_value != current_matrix[current_row]);
 }
 
 #elif (DIODE_DIRECTION == COL2ROW)
 
 static void select_row(uint8_t row) {
-  setPinOutput(row_pins[row]);
-  writePinLow(row_pins[row]);
+    setPinOutput(row_pins[row]);
+    writePinLow(row_pins[row]);
 }
 
 static void unselect_row(uint8_t row) { setPinInputHigh(row_pins[row]); }
 
 static void unselect_rows(void) {
-  for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
-    setPinInputHigh(row_pins[x]);
-  }
+    for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
+        setPinInputHigh(row_pins[x]);
+    }
 }
 
 static void init_pins(void) {
-  unselect_rows();
-  for (uint8_t x = 0; x < MATRIX_COLS; x++) {
-    setPinInputHigh(col_pins[x]);
-  }
+    unselect_rows();
+    for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+        setPinInputHigh(col_pins[x]);
+    }
 }
 
 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
-  // Store last value of row prior to reading
-  matrix_row_t last_row_value = current_matrix[current_row];
+    // Store last value of row prior to reading
+    matrix_row_t last_row_value = current_matrix[current_row];
 
-  // Clear data in matrix row
-  current_matrix[current_row] = 0;
+    // Clear data in matrix row
+    current_matrix[current_row] = 0;
 
-  // Select row and wait for row selecton to stabilize
-  select_row(current_row);
-  wait_us(30);
+    // Select row and wait for row selecton to stabilize
+    select_row(current_row);
+    wait_us(30);
 
-  // For each col...
-  for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
-    // Populate the matrix row with the state of the col pin
-    current_matrix[current_row] |= readPin(col_pins[col_index]) ? 0 : (ROW_SHIFTER << col_index);
-  }
+    // For each col...
+    for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+        // Populate the matrix row with the state of the col pin
+        current_matrix[current_row] |= readPin(col_pins[col_index]) ? 0 : (ROW_SHIFTER << col_index);
+    }
 
-  // Unselect row
-  unselect_row(current_row);
+    // Unselect row
+    unselect_row(current_row);
 
-  return (last_row_value != current_matrix[current_row]);
+    return (last_row_value != current_matrix[current_row]);
 }
 
 #elif (DIODE_DIRECTION == ROW2COL)
 
 static void select_col(uint8_t col) {
-  setPinOutput(col_pins[col]);
-  writePinLow(col_pins[col]);
+    setPinOutput(col_pins[col]);
+    writePinLow(col_pins[col]);
 }
 
 static void unselect_col(uint8_t col) { setPinInputHigh(col_pins[col]); }
 
 static void unselect_cols(void) {
-  for (uint8_t x = 0; x < MATRIX_COLS; x++) {
-    setPinInputHigh(col_pins[x]);
-  }
+    for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+        setPinInputHigh(col_pins[x]);
+    }
 }
 
 static void init_pins(void) {
-  unselect_cols();
-  for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
-    setPinInputHigh(row_pins[x]);
-  }
+    unselect_cols();
+    for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
+        setPinInputHigh(row_pins[x]);
+    }
 }
 
 static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
-  bool matrix_changed = false;
-
-  // Select col and wait for col selecton to stabilize
-  select_col(current_col);
-  wait_us(30);
-
-  // For each row...
-  for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) {
-    // Store last value of row prior to reading
-    matrix_row_t last_row_value = current_matrix[row_index];
-
-    // Check row pin state
-    if (readPin(row_pins[row_index])) {
-      // Pin HI, clear col bit
-      current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
-    } else {
-      // Pin LO, set col bit
-      current_matrix[row_index] |= (ROW_SHIFTER << current_col);
-    }
+    bool matrix_changed = false;
+
+    // Select col and wait for col selecton to stabilize
+    select_col(current_col);
+    wait_us(30);
+
+    // For each row...
+    for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) {
+        // Store last value of row prior to reading
+        matrix_row_t last_row_value = current_matrix[row_index];
+
+        // Check row pin state
+        if (readPin(row_pins[row_index])) {
+            // Pin HI, clear col bit
+            current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
+        } else {
+            // Pin LO, set col bit
+            current_matrix[row_index] |= (ROW_SHIFTER << current_col);
+        }
 
-    // Determine if the matrix changed state
-    if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) {
-      matrix_changed = true;
+        // Determine if the matrix changed state
+        if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) {
+            matrix_changed = true;
+        }
     }
-  }
 
-  // Unselect col
-  unselect_col(current_col);
+    // Unselect col
+    unselect_col(current_col);
 
-  return matrix_changed;
+    return matrix_changed;
 }
 
 #endif
 
 void matrix_init(void) {
-  debug_enable = true;
-  debug_matrix = true;
-  debug_mouse  = true;
+    debug_enable = true;
+    debug_matrix = true;
+    debug_mouse  = true;
 
-  // Set pinout for right half if pinout for that half is defined
-  if (!isLeftHand) {
+    // Set pinout for right half if pinout for that half is defined
+    if (!isLeftHand) {
 #ifdef DIRECT_PINS_RIGHT
-    const pin_t direct_pins_right[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS_RIGHT;
-    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
-      for (uint8_t j = 0; j < MATRIX_COLS; j++) {
-        direct_pins[i][j] = direct_pins_right[i][j];
-      }
-    }
+        const pin_t direct_pins_right[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS_RIGHT;
+        for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+            for (uint8_t j = 0; j < MATRIX_COLS; j++) {
+                direct_pins[i][j] = direct_pins_right[i][j];
+            }
+        }
 #endif
 #ifdef MATRIX_ROW_PINS_RIGHT
-    const pin_t row_pins_right[MATRIX_ROWS] = MATRIX_ROW_PINS_RIGHT;
-    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
-      row_pins[i] = row_pins_right[i];
-    }
+        const pin_t row_pins_right[MATRIX_ROWS] = MATRIX_ROW_PINS_RIGHT;
+        for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+            row_pins[i] = row_pins_right[i];
+        }
 #endif
 #ifdef MATRIX_COL_PINS_RIGHT
-    const pin_t col_pins_right[MATRIX_COLS] = MATRIX_COL_PINS_RIGHT;
-    for (uint8_t i = 0; i < MATRIX_COLS; i++) {
-      col_pins[i] = col_pins_right[i];
-    }
+        const pin_t col_pins_right[MATRIX_COLS] = MATRIX_COL_PINS_RIGHT;
+        for (uint8_t i = 0; i < MATRIX_COLS; i++) {
+            col_pins[i] = col_pins_right[i];
+        }
 #endif
-  }
+    }
 
-  thisHand = isLeftHand ? 0 : (ROWS_PER_HAND);
-  thatHand = ROWS_PER_HAND - thisHand;
+    thisHand = isLeftHand ? 0 : (ROWS_PER_HAND);
+    thatHand = ROWS_PER_HAND - thisHand;
 
-  // initialize key pins
-  init_pins();
+    // initialize key pins
+    init_pins();
 
-  // initialize matrix state: all keys off
-  for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
-    matrix[i] = 0;
-  }
+    // initialize matrix state: all keys off
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        matrix[i] = 0;
+    }
 
-  debounce_init(ROWS_PER_HAND);
+    debounce_init(ROWS_PER_HAND);
 
-  matrix_init_quantum();
+    matrix_init_quantum();
 }
 
 uint8_t _matrix_scan(void) {
-  bool changed = false;
+    bool changed = false;
 
 #if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
-  // Set row, read cols
-  for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
-    changed |= read_cols_on_row(raw_matrix, current_row);
-  }
+    // Set row, read cols
+    for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
+        changed |= read_cols_on_row(raw_matrix, current_row);
+    }
 #elif (DIODE_DIRECTION == ROW2COL)
-  // Set col, read rows
-  for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
-    changed |= read_rows_on_col(raw_matrix, current_col);
-  }
+    // Set col, read rows
+    for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
+        changed |= read_rows_on_col(raw_matrix, current_col);
+    }
 #endif
 
-  debounce(raw_matrix, matrix + thisHand, ROWS_PER_HAND, changed);
+    debounce(raw_matrix, matrix + thisHand, ROWS_PER_HAND, changed);
 
-  return (uint8_t)changed;
+    return (uint8_t)changed;
 }
 
 uint8_t matrix_scan(void) {
-  uint8_t ret = _matrix_scan();
-
-  if (is_keyboard_master()) {
-    static uint8_t error_count;
-
-    if (!transport_master(matrix + thatHand)) {
-      error_count++;
-
-      if (error_count > ERROR_DISCONNECT_COUNT) {
-        // reset other half if disconnected
-        for (int i = 0; i < ROWS_PER_HAND; ++i) {
-          matrix[thatHand + i] = 0;
+    uint8_t ret = _matrix_scan();
+
+    if (is_keyboard_master()) {
+        static uint8_t error_count;
+
+        if (!transport_master(matrix + thatHand)) {
+            error_count++;
+
+            if (error_count > ERROR_DISCONNECT_COUNT) {
+                // reset other half if disconnected
+                for (int i = 0; i < ROWS_PER_HAND; ++i) {
+                    matrix[thatHand + i] = 0;
+                }
+            }
+        } else {
+            error_count = 0;
         }
-      }
-    } else {
-      error_count = 0;
-    }
 
-    matrix_scan_quantum();
-  } else {
-    transport_slave(matrix + thisHand);
+        matrix_scan_quantum();
+    } else {
+        transport_slave(matrix + thisHand);
 #ifdef ENCODER_ENABLE
-    encoder_read();
+        encoder_read();
 #endif
-    matrix_slave_scan_user();
-  }
+        matrix_slave_scan_user();
+    }
 
-  return ret;
+    return ret;
 }
diff --git a/quantum/split_common/post_config.h b/quantum/split_common/post_config.h
index ff0fc5e19..5c0b414fb 100644
--- a/quantum/split_common/post_config.h
+++ b/quantum/split_common/post_config.h
@@ -1,19 +1,19 @@
 #if defined(USE_I2C) || defined(EH)
-  // When using I2C, using rgblight implicitly involves split support.
-  #if defined(RGBLIGHT_ENABLE) && !defined(RGBLIGHT_SPLIT)
-    #define RGBLIGHT_SPLIT
-  #endif
+// When using I2C, using rgblight implicitly involves split support.
+#    if defined(RGBLIGHT_ENABLE) && !defined(RGBLIGHT_SPLIT)
+#        define RGBLIGHT_SPLIT
+#    endif
 
-  #ifndef F_SCL
-    #define F_SCL 100000UL  // SCL frequency
-  #endif
+#    ifndef F_SCL
+#        define F_SCL 100000UL  // SCL frequency
+#    endif
 
 #else  // use serial
-  // When using serial, the user must define RGBLIGHT_SPLIT explicitly
-  //  in config.h as needed.
-  //      see quantum/rgblight_post_config.h
-  #if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
-    // When using serial and RGBLIGHT_SPLIT need separate transaction
-    #define SERIAL_USE_MULTI_TRANSACTION
-  #endif
+// When using serial, the user must define RGBLIGHT_SPLIT explicitly
+//  in config.h as needed.
+//      see quantum/rgblight_post_config.h
+#    if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
+// When using serial and RGBLIGHT_SPLIT need separate transaction
+#        define SERIAL_USE_MULTI_TRANSACTION
+#    endif
 #endif
diff --git a/quantum/split_common/serial.c b/quantum/split_common/serial.c
index 322ab8030..c4ef2a97e 100644
--- a/quantum/split_common/serial.c
+++ b/quantum/split_common/serial.c
@@ -8,7 +8,7 @@
  */
 
 #ifndef F_CPU
-#define F_CPU 16000000
+#    define F_CPU 16000000
 #endif
 
 #include <avr/io.h>
@@ -21,252 +21,224 @@
 
 #ifdef SOFT_SERIAL_PIN
 
-#ifdef __AVR_ATmega32U4__
-  // if using ATmega32U4 I2C, can not use PD0 and PD1 in soft serial.
-  #ifdef USE_AVR_I2C
-    #if SOFT_SERIAL_PIN == D0 || SOFT_SERIAL_PIN == D1
-      #error Using ATmega32U4 I2C, so can not use PD0, PD1
-    #endif
-  #endif
-
-  #define setPinInputHigh(pin)    (DDRx_ADDRESS(pin)  &= ~_BV((pin) & 0xF), \
-                                   PORTx_ADDRESS(pin) |=  _BV((pin) & 0xF))
-  #define setPinOutput(pin)       (DDRx_ADDRESS(pin)  |=  _BV((pin) & 0xF))
-  #define writePinHigh(pin)       (PORTx_ADDRESS(pin) |=  _BV((pin) & 0xF))
-  #define writePinLow(pin)        (PORTx_ADDRESS(pin) &= ~_BV((pin) & 0xF))
-  #define readPin(pin)            ((bool)(PINx_ADDRESS(pin) & _BV((pin) & 0xF)))
-
-  #if SOFT_SERIAL_PIN >= D0 && SOFT_SERIAL_PIN <= D3
-    #if SOFT_SERIAL_PIN == D0
-      #define EIMSK_BIT       _BV(INT0)
-      #define EICRx_BIT       (~(_BV(ISC00) | _BV(ISC01)))
-      #define SERIAL_PIN_INTERRUPT INT0_vect
-    #elif  SOFT_SERIAL_PIN == D1
-      #define EIMSK_BIT       _BV(INT1)
-      #define EICRx_BIT       (~(_BV(ISC10) | _BV(ISC11)))
-      #define SERIAL_PIN_INTERRUPT INT1_vect
-    #elif  SOFT_SERIAL_PIN == D2
-      #define EIMSK_BIT       _BV(INT2)
-      #define EICRx_BIT       (~(_BV(ISC20) | _BV(ISC21)))
-      #define SERIAL_PIN_INTERRUPT INT2_vect
-    #elif  SOFT_SERIAL_PIN == D3
-      #define EIMSK_BIT       _BV(INT3)
-      #define EICRx_BIT       (~(_BV(ISC30) | _BV(ISC31)))
-      #define SERIAL_PIN_INTERRUPT INT3_vect
-    #endif
-  #elif  SOFT_SERIAL_PIN == E6
-    #define EIMSK_BIT        _BV(INT6)
-    #define EICRx_BIT        (~(_BV(ISC60) | _BV(ISC61)))
-    #define SERIAL_PIN_INTERRUPT INT6_vect
-  #else
-  #error invalid SOFT_SERIAL_PIN value
-  #endif
-
-#else
- #error serial.c now support ATmega32U4 only
-#endif
-
-#define ALWAYS_INLINE __attribute__((always_inline))
-#define NO_INLINE __attribute__((noinline))
-#define _delay_sub_us(x)    __builtin_avr_delay_cycles(x)
+#    ifdef __AVR_ATmega32U4__
+// if using ATmega32U4 I2C, can not use PD0 and PD1 in soft serial.
+#        ifdef USE_AVR_I2C
+#            if SOFT_SERIAL_PIN == D0 || SOFT_SERIAL_PIN == D1
+#                error Using ATmega32U4 I2C, so can not use PD0, PD1
+#            endif
+#        endif
+
+#        define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
+#        define setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
+#        define writePinHigh(pin) (PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
+#        define writePinLow(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
+#        define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF)))
+
+#        if SOFT_SERIAL_PIN >= D0 && SOFT_SERIAL_PIN <= D3
+#            if SOFT_SERIAL_PIN == D0
+#                define EIMSK_BIT _BV(INT0)
+#                define EICRx_BIT (~(_BV(ISC00) | _BV(ISC01)))
+#                define SERIAL_PIN_INTERRUPT INT0_vect
+#            elif SOFT_SERIAL_PIN == D1
+#                define EIMSK_BIT _BV(INT1)
+#                define EICRx_BIT (~(_BV(ISC10) | _BV(ISC11)))
+#                define SERIAL_PIN_INTERRUPT INT1_vect
+#            elif SOFT_SERIAL_PIN == D2
+#                define EIMSK_BIT _BV(INT2)
+#                define EICRx_BIT (~(_BV(ISC20) | _BV(ISC21)))
+#                define SERIAL_PIN_INTERRUPT INT2_vect
+#            elif SOFT_SERIAL_PIN == D3
+#                define EIMSK_BIT _BV(INT3)
+#                define EICRx_BIT (~(_BV(ISC30) | _BV(ISC31)))
+#                define SERIAL_PIN_INTERRUPT INT3_vect
+#            endif
+#        elif SOFT_SERIAL_PIN == E6
+#            define EIMSK_BIT _BV(INT6)
+#            define EICRx_BIT (~(_BV(ISC60) | _BV(ISC61)))
+#            define SERIAL_PIN_INTERRUPT INT6_vect
+#        else
+#            error invalid SOFT_SERIAL_PIN value
+#        endif
+
+#    else
+#        error serial.c now support ATmega32U4 only
+#    endif
+
+#    define ALWAYS_INLINE __attribute__((always_inline))
+#    define NO_INLINE __attribute__((noinline))
+#    define _delay_sub_us(x) __builtin_avr_delay_cycles(x)
 
 // parity check
-#define ODD_PARITY 1
-#define EVEN_PARITY 0
-#define PARITY EVEN_PARITY
-
-#ifdef SERIAL_DELAY
-  // custom setup in config.h
-  // #define TID_SEND_ADJUST 2
-  // #define SERIAL_DELAY 6             // micro sec
-  // #define READ_WRITE_START_ADJUST 30 // cycles
-  // #define READ_WRITE_WIDTH_ADJUST 8 // cycles
-#else
+#    define ODD_PARITY 1
+#    define EVEN_PARITY 0
+#    define PARITY EVEN_PARITY
+
+#    ifdef SERIAL_DELAY
+// custom setup in config.h
+// #define TID_SEND_ADJUST 2
+// #define SERIAL_DELAY 6             // micro sec
+// #define READ_WRITE_START_ADJUST 30 // cycles
+// #define READ_WRITE_WIDTH_ADJUST 8 // cycles
+#    else
 // ============ Standard setups ============
 
-#ifndef SELECT_SOFT_SERIAL_SPEED
-#define SELECT_SOFT_SERIAL_SPEED 1
+#        ifndef SELECT_SOFT_SERIAL_SPEED
+#            define SELECT_SOFT_SERIAL_SPEED 1
 //  0: about 189kbps (Experimental only)
 //  1: about 137kbps (default)
 //  2: about 75kbps
 //  3: about 39kbps
 //  4: about 26kbps
 //  5: about 20kbps
-#endif
-
-#if __GNUC__ < 6
-  #define TID_SEND_ADJUST 14
-#else
-  #define TID_SEND_ADJUST 2
-#endif
-
-#if SELECT_SOFT_SERIAL_SPEED == 0
-  // Very High speed
-  #define SERIAL_DELAY 4             // micro sec
-  #if __GNUC__ < 6
-    #define READ_WRITE_START_ADJUST 33 // cycles
-    #define READ_WRITE_WIDTH_ADJUST 3 // cycles
-  #else
-    #define READ_WRITE_START_ADJUST 34 // cycles
-    #define READ_WRITE_WIDTH_ADJUST 7 // cycles
-  #endif
-#elif SELECT_SOFT_SERIAL_SPEED == 1
-  // High speed
-  #define SERIAL_DELAY 6             // micro sec
-  #if __GNUC__ < 6
-    #define READ_WRITE_START_ADJUST 30 // cycles
-    #define READ_WRITE_WIDTH_ADJUST 3 // cycles
-  #else
-    #define READ_WRITE_START_ADJUST 33 // cycles
-    #define READ_WRITE_WIDTH_ADJUST 7 // cycles
-  #endif
-#elif SELECT_SOFT_SERIAL_SPEED == 2
-  // Middle speed
-  #define SERIAL_DELAY 12            // micro sec
-  #define READ_WRITE_START_ADJUST 30 // cycles
-  #if __GNUC__ < 6
-    #define READ_WRITE_WIDTH_ADJUST 3 // cycles
-  #else
-    #define READ_WRITE_WIDTH_ADJUST 7 // cycles
-  #endif
-#elif SELECT_SOFT_SERIAL_SPEED == 3
-  // Low speed
-  #define SERIAL_DELAY 24            // micro sec
-  #define READ_WRITE_START_ADJUST 30 // cycles
-  #if __GNUC__ < 6
-    #define READ_WRITE_WIDTH_ADJUST 3 // cycles
-  #else
-    #define READ_WRITE_WIDTH_ADJUST 7 // cycles
-  #endif
-#elif SELECT_SOFT_SERIAL_SPEED == 4
-  // Very Low speed
-  #define SERIAL_DELAY 36            // micro sec
-  #define READ_WRITE_START_ADJUST 30 // cycles
-  #if __GNUC__ < 6
-    #define READ_WRITE_WIDTH_ADJUST 3 // cycles
-  #else
-    #define READ_WRITE_WIDTH_ADJUST 7 // cycles
-  #endif
-#elif SELECT_SOFT_SERIAL_SPEED == 5
-  // Ultra Low speed
-  #define SERIAL_DELAY 48            // micro sec
-  #define READ_WRITE_START_ADJUST 30 // cycles
-  #if __GNUC__ < 6
-    #define READ_WRITE_WIDTH_ADJUST 3 // cycles
-  #else
-    #define READ_WRITE_WIDTH_ADJUST 7 // cycles
-  #endif
-#else
-#error invalid SELECT_SOFT_SERIAL_SPEED value
-#endif /* SELECT_SOFT_SERIAL_SPEED */
-#endif /* SERIAL_DELAY */
-
-#define SERIAL_DELAY_HALF1 (SERIAL_DELAY/2)
-#define SERIAL_DELAY_HALF2 (SERIAL_DELAY - SERIAL_DELAY/2)
-
-#define SLAVE_INT_WIDTH_US 1
-#ifndef SERIAL_USE_MULTI_TRANSACTION
-  #define SLAVE_INT_RESPONSE_TIME SERIAL_DELAY
-#else
-  #define SLAVE_INT_ACK_WIDTH_UNIT 2
-  #define SLAVE_INT_ACK_WIDTH 4
-#endif
-
-static SSTD_t *Transaction_table = NULL;
+#        endif
+
+#        if __GNUC__ < 6
+#            define TID_SEND_ADJUST 14
+#        else
+#            define TID_SEND_ADJUST 2
+#        endif
+
+#        if SELECT_SOFT_SERIAL_SPEED == 0
+// Very High speed
+#            define SERIAL_DELAY 4  // micro sec
+#            if __GNUC__ < 6
+#                define READ_WRITE_START_ADJUST 33  // cycles
+#                define READ_WRITE_WIDTH_ADJUST 3   // cycles
+#            else
+#                define READ_WRITE_START_ADJUST 34  // cycles
+#                define READ_WRITE_WIDTH_ADJUST 7   // cycles
+#            endif
+#        elif SELECT_SOFT_SERIAL_SPEED == 1
+// High speed
+#            define SERIAL_DELAY 6  // micro sec
+#            if __GNUC__ < 6
+#                define READ_WRITE_START_ADJUST 30  // cycles
+#                define READ_WRITE_WIDTH_ADJUST 3   // cycles
+#            else
+#                define READ_WRITE_START_ADJUST 33  // cycles
+#                define READ_WRITE_WIDTH_ADJUST 7   // cycles
+#            endif
+#        elif SELECT_SOFT_SERIAL_SPEED == 2
+// Middle speed
+#            define SERIAL_DELAY 12             // micro sec
+#            define READ_WRITE_START_ADJUST 30  // cycles
+#            if __GNUC__ < 6
+#                define READ_WRITE_WIDTH_ADJUST 3  // cycles
+#            else
+#                define READ_WRITE_WIDTH_ADJUST 7  // cycles
+#            endif
+#        elif SELECT_SOFT_SERIAL_SPEED == 3
+// Low speed
+#            define SERIAL_DELAY 24             // micro sec
+#            define READ_WRITE_START_ADJUST 30  // cycles
+#            if __GNUC__ < 6
+#                define READ_WRITE_WIDTH_ADJUST 3  // cycles
+#            else
+#                define READ_WRITE_WIDTH_ADJUST 7  // cycles
+#            endif
+#        elif SELECT_SOFT_SERIAL_SPEED == 4
+// Very Low speed
+#            define SERIAL_DELAY 36             // micro sec
+#            define READ_WRITE_START_ADJUST 30  // cycles
+#            if __GNUC__ < 6
+#                define READ_WRITE_WIDTH_ADJUST 3  // cycles
+#            else
+#                define READ_WRITE_WIDTH_ADJUST 7  // cycles
+#            endif
+#        elif SELECT_SOFT_SERIAL_SPEED == 5
+// Ultra Low speed
+#            define SERIAL_DELAY 48             // micro sec
+#            define READ_WRITE_START_ADJUST 30  // cycles
+#            if __GNUC__ < 6
+#                define READ_WRITE_WIDTH_ADJUST 3  // cycles
+#            else
+#                define READ_WRITE_WIDTH_ADJUST 7  // cycles
+#            endif
+#        else
+#            error invalid SELECT_SOFT_SERIAL_SPEED value
+#        endif /* SELECT_SOFT_SERIAL_SPEED */
+#    endif     /* SERIAL_DELAY */
+
+#    define SERIAL_DELAY_HALF1 (SERIAL_DELAY / 2)
+#    define SERIAL_DELAY_HALF2 (SERIAL_DELAY - SERIAL_DELAY / 2)
+
+#    define SLAVE_INT_WIDTH_US 1
+#    ifndef SERIAL_USE_MULTI_TRANSACTION
+#        define SLAVE_INT_RESPONSE_TIME SERIAL_DELAY
+#    else
+#        define SLAVE_INT_ACK_WIDTH_UNIT 2
+#        define SLAVE_INT_ACK_WIDTH 4
+#    endif
+
+static SSTD_t *Transaction_table      = NULL;
 static uint8_t Transaction_table_size = 0;
 
 inline static void serial_delay(void) ALWAYS_INLINE;
-inline static
-void serial_delay(void) {
-  _delay_us(SERIAL_DELAY);
-}
+inline static void serial_delay(void) { _delay_us(SERIAL_DELAY); }
 
 inline static void serial_delay_half1(void) ALWAYS_INLINE;
-inline static
-void serial_delay_half1(void) {
-  _delay_us(SERIAL_DELAY_HALF1);
-}
+inline static void serial_delay_half1(void) { _delay_us(SERIAL_DELAY_HALF1); }
 
 inline static void serial_delay_half2(void) ALWAYS_INLINE;
-inline static
-void serial_delay_half2(void) {
-  _delay_us(SERIAL_DELAY_HALF2);
-}
+inline static void serial_delay_half2(void) { _delay_us(SERIAL_DELAY_HALF2); }
 
 inline static void serial_output(void) ALWAYS_INLINE;
-inline static
-void serial_output(void) {
-  setPinOutput(SOFT_SERIAL_PIN);
-}
+inline static void serial_output(void) { setPinOutput(SOFT_SERIAL_PIN); }
 
 // make the serial pin an input with pull-up resistor
 inline static void serial_input_with_pullup(void) ALWAYS_INLINE;
-inline static
-void serial_input_with_pullup(void) {
-  setPinInputHigh(SOFT_SERIAL_PIN);
-}
+inline static void serial_input_with_pullup(void) { setPinInputHigh(SOFT_SERIAL_PIN); }
 
 inline static uint8_t serial_read_pin(void) ALWAYS_INLINE;
-inline static
-uint8_t serial_read_pin(void) {
-  return !! readPin(SOFT_SERIAL_PIN);
-}
+inline static uint8_t serial_read_pin(void) { return !!readPin(SOFT_SERIAL_PIN); }
 
 inline static void serial_low(void) ALWAYS_INLINE;
-inline static
-void serial_low(void) {
-  writePinLow(SOFT_SERIAL_PIN);
-}
+inline static void serial_low(void) { writePinLow(SOFT_SERIAL_PIN); }
 
 inline static void serial_high(void) ALWAYS_INLINE;
-inline static
-void serial_high(void) {
-  writePinHigh(SOFT_SERIAL_PIN);
-}
+inline static void serial_high(void) { writePinHigh(SOFT_SERIAL_PIN); }
 
-void soft_serial_initiator_init(SSTD_t *sstd_table, int sstd_table_size)
-{
-    Transaction_table = sstd_table;
+void soft_serial_initiator_init(SSTD_t *sstd_table, int sstd_table_size) {
+    Transaction_table      = sstd_table;
     Transaction_table_size = (uint8_t)sstd_table_size;
     serial_output();
     serial_high();
 }
 
-void soft_serial_target_init(SSTD_t *sstd_table, int sstd_table_size)
-{
-    Transaction_table = sstd_table;
+void soft_serial_target_init(SSTD_t *sstd_table, int sstd_table_size) {
+    Transaction_table      = sstd_table;
     Transaction_table_size = (uint8_t)sstd_table_size;
     serial_input_with_pullup();
 
     // Enable INT0-INT3,INT6
     EIMSK |= EIMSK_BIT;
-#if SOFT_SERIAL_PIN == E6
+#    if SOFT_SERIAL_PIN == E6
     // Trigger on falling edge of INT6
     EICRB &= EICRx_BIT;
-#else
+#    else
     // Trigger on falling edge of INT0-INT3
     EICRA &= EICRx_BIT;
-#endif
+#    endif
 }
 
 // Used by the sender to synchronize timing with the reciver.
 static void sync_recv(void) NO_INLINE;
-static
-void sync_recv(void) {
-  for (uint8_t i = 0; i < SERIAL_DELAY*5 && serial_read_pin(); i++ ) {
-  }
-  // This shouldn't hang if the target disconnects because the
-  // serial line will float to high if the target does disconnect.
-  while (!serial_read_pin());
+static void sync_recv(void) {
+    for (uint8_t i = 0; i < SERIAL_DELAY * 5 && serial_read_pin(); i++) {
+    }
+    // This shouldn't hang if the target disconnects because the
+    // serial line will float to high if the target does disconnect.
+    while (!serial_read_pin())
+        ;
 }
 
 // Used by the reciver to send a synchronization signal to the sender.
 static void sync_send(void) NO_INLINE;
-static
-void sync_send(void) {
-  serial_low();
-  serial_delay();
-  serial_high();
+static void sync_send(void) {
+    serial_low();
+    serial_delay();
+    serial_high();
 }
 
 // Reads a byte from the serial line
@@ -274,92 +246,94 @@ static uint8_t serial_read_chunk(uint8_t *pterrcount, uint8_t bit) NO_INLINE;
 static uint8_t serial_read_chunk(uint8_t *pterrcount, uint8_t bit) {
     uint8_t byte, i, p, pb;
 
-  _delay_sub_us(READ_WRITE_START_ADJUST);
-  for( i = 0, byte = 0, p = PARITY; i < bit; i++ ) {
-      serial_delay_half1();   // read the middle of pulses
-      if( serial_read_pin() ) {
-          byte = (byte << 1) | 1; p ^= 1;
-      } else {
-          byte = (byte << 1) | 0; p ^= 0;
-      }
-      _delay_sub_us(READ_WRITE_WIDTH_ADJUST);
-      serial_delay_half2();
-  }
-  /* recive parity bit */
-  serial_delay_half1();   // read the middle of pulses
-  pb = serial_read_pin();
-  _delay_sub_us(READ_WRITE_WIDTH_ADJUST);
-  serial_delay_half2();
-
-  *pterrcount += (p != pb)? 1 : 0;
-
-  return byte;
+    _delay_sub_us(READ_WRITE_START_ADJUST);
+    for (i = 0, byte = 0, p = PARITY; i < bit; i++) {
+        serial_delay_half1();  // read the middle of pulses
+        if (serial_read_pin()) {
+            byte = (byte << 1) | 1;
+            p ^= 1;
+        } else {
+            byte = (byte << 1) | 0;
+            p ^= 0;
+        }
+        _delay_sub_us(READ_WRITE_WIDTH_ADJUST);
+        serial_delay_half2();
+    }
+    /* recive parity bit */
+    serial_delay_half1();  // read the middle of pulses
+    pb = serial_read_pin();
+    _delay_sub_us(READ_WRITE_WIDTH_ADJUST);
+    serial_delay_half2();
+
+    *pterrcount += (p != pb) ? 1 : 0;
+
+    return byte;
 }
 
 // Sends a byte with MSB ordering
 void serial_write_chunk(uint8_t data, uint8_t bit) NO_INLINE;
 void serial_write_chunk(uint8_t data, uint8_t bit) {
     uint8_t b, p;
-    for( p = PARITY, b = 1<<(bit-1); b ; b >>= 1) {
-        if(data & b) {
-            serial_high(); p ^= 1;
+    for (p = PARITY, b = 1 << (bit - 1); b; b >>= 1) {
+        if (data & b) {
+            serial_high();
+            p ^= 1;
         } else {
-            serial_low();  p ^= 0;
+            serial_low();
+            p ^= 0;
         }
         serial_delay();
     }
     /* send parity bit */
-    if(p & 1) { serial_high(); }
-    else      { serial_low(); }
+    if (p & 1) {
+        serial_high();
+    } else {
+        serial_low();
+    }
     serial_delay();
 
-    serial_low(); // sync_send() / senc_recv() need raise edge
+    serial_low();  // sync_send() / senc_recv() need raise edge
 }
 
 static void serial_send_packet(uint8_t *buffer, uint8_t size) NO_INLINE;
-static
-void serial_send_packet(uint8_t *buffer, uint8_t size) {
-  for (uint8_t i = 0; i < size; ++i) {
-    uint8_t data;
-    data = buffer[i];
-    sync_send();
-    serial_write_chunk(data,8);
-  }
+static void serial_send_packet(uint8_t *buffer, uint8_t size) {
+    for (uint8_t i = 0; i < size; ++i) {
+        uint8_t data;
+        data = buffer[i];
+        sync_send();
+        serial_write_chunk(data, 8);
+    }
 }
 
 static uint8_t serial_recive_packet(uint8_t *buffer, uint8_t size) NO_INLINE;
-static
-uint8_t serial_recive_packet(uint8_t *buffer, uint8_t size) {
-  uint8_t pecount = 0;
-  for (uint8_t i = 0; i < size; ++i) {
-    uint8_t data;
-    sync_recv();
-    data = serial_read_chunk(&pecount, 8);
-    buffer[i] = data;
-  }
-  return pecount == 0;
+static uint8_t serial_recive_packet(uint8_t *buffer, uint8_t size) {
+    uint8_t pecount = 0;
+    for (uint8_t i = 0; i < size; ++i) {
+        uint8_t data;
+        sync_recv();
+        data      = serial_read_chunk(&pecount, 8);
+        buffer[i] = data;
+    }
+    return pecount == 0;
 }
 
-inline static
-void change_sender2reciver(void) {
-    sync_send();          //0
-    serial_delay_half1(); //1
-    serial_low();         //2
-    serial_input_with_pullup(); //2
-    serial_delay_half1(); //3
+inline static void change_sender2reciver(void) {
+    sync_send();                 // 0
+    serial_delay_half1();        // 1
+    serial_low();                // 2
+    serial_input_with_pullup();  // 2
+    serial_delay_half1();        // 3
 }
 
-inline static
-void change_reciver2sender(void) {
-    sync_recv();     //0
-    serial_delay();  //1
-    serial_low();    //3
-    serial_output(); //3
-    serial_delay_half1(); //4
+inline static void change_reciver2sender(void) {
+    sync_recv();           // 0
+    serial_delay();        // 1
+    serial_low();          // 3
+    serial_output();       // 3
+    serial_delay_half1();  // 4
 }
 
-static inline uint8_t nibble_bits_count(uint8_t bits)
-{
+static inline uint8_t nibble_bits_count(uint8_t bits) {
     bits = (bits & 0x5) + (bits >> 1 & 0x5);
     bits = (bits & 0x3) + (bits >> 2 & 0x3);
     return bits;
@@ -367,51 +341,47 @@ static inline uint8_t nibble_bits_count(uint8_t bits)
 
 // interrupt handle to be used by the target device
 ISR(SERIAL_PIN_INTERRUPT) {
+#    ifndef SERIAL_USE_MULTI_TRANSACTION
+    serial_low();
+    serial_output();
+    SSTD_t *trans = Transaction_table;
+#    else
+    // recive transaction table index
+    uint8_t tid, bits;
+    uint8_t pecount = 0;
+    sync_recv();
+    bits = serial_read_chunk(&pecount, 7);
+    tid  = bits >> 3;
+    bits = (bits & 7) != nibble_bits_count(tid);
+    if (bits || pecount > 0 || tid > Transaction_table_size) {
+        return;
+    }
+    serial_delay_half1();
 
-#ifndef SERIAL_USE_MULTI_TRANSACTION
-  serial_low();
-  serial_output();
-  SSTD_t *trans = Transaction_table;
-#else
-  // recive transaction table index
-  uint8_t tid, bits;
-  uint8_t pecount = 0;
-  sync_recv();
-  bits = serial_read_chunk(&pecount,7);
-  tid = bits>>3;
-  bits = (bits&7) != nibble_bits_count(tid);
-  if( bits || pecount> 0 || tid > Transaction_table_size ) {
-      return;
-  }
-  serial_delay_half1();
-
-  serial_high(); // response step1 low->high
-  serial_output();
-  _delay_sub_us(SLAVE_INT_ACK_WIDTH_UNIT*SLAVE_INT_ACK_WIDTH);
-  SSTD_t *trans = &Transaction_table[tid];
-  serial_low(); // response step2 ack high->low
-#endif
+    serial_high();  // response step1 low->high
+    serial_output();
+    _delay_sub_us(SLAVE_INT_ACK_WIDTH_UNIT * SLAVE_INT_ACK_WIDTH);
+    SSTD_t *trans = &Transaction_table[tid];
+    serial_low();  // response step2 ack high->low
+#    endif
+
+    // target send phase
+    if (trans->target2initiator_buffer_size > 0) serial_send_packet((uint8_t *)trans->target2initiator_buffer, trans->target2initiator_buffer_size);
+    // target switch to input
+    change_sender2reciver();
+
+    // target recive phase
+    if (trans->initiator2target_buffer_size > 0) {
+        if (serial_recive_packet((uint8_t *)trans->initiator2target_buffer, trans->initiator2target_buffer_size)) {
+            *trans->status = TRANSACTION_ACCEPTED;
+        } else {
+            *trans->status = TRANSACTION_DATA_ERROR;
+        }
+    } else {
+        *trans->status = TRANSACTION_ACCEPTED;
+    }
 
-  // target send phase
-  if( trans->target2initiator_buffer_size > 0 )
-      serial_send_packet((uint8_t *)trans->target2initiator_buffer,
-                         trans->target2initiator_buffer_size);
-  // target switch to input
-  change_sender2reciver();
-
-  // target recive phase
-  if( trans->initiator2target_buffer_size > 0 ) {
-      if (serial_recive_packet((uint8_t *)trans->initiator2target_buffer,
-                               trans->initiator2target_buffer_size) ) {
-          *trans->status = TRANSACTION_ACCEPTED;
-      } else {
-          *trans->status = TRANSACTION_DATA_ERROR;
-      }
-  } else {
-      *trans->status = TRANSACTION_ACCEPTED;
-  }
-
-  sync_recv(); //weit initiator output to high
+    sync_recv();  // weit initiator output to high
 }
 
 /////////
@@ -424,105 +394,103 @@ ISR(SERIAL_PIN_INTERRUPT) {
 //    TRANSACTION_NO_RESPONSE
 //    TRANSACTION_DATA_ERROR
 // this code is very time dependent, so we need to disable interrupts
-#ifndef SERIAL_USE_MULTI_TRANSACTION
-int  soft_serial_transaction(void) {
-  SSTD_t *trans = Transaction_table;
-#else
-int  soft_serial_transaction(int sstd_index) {
-  if( sstd_index > Transaction_table_size )
-      return TRANSACTION_TYPE_ERROR;
-  SSTD_t *trans = &Transaction_table[sstd_index];
-#endif
-  cli();
+#    ifndef SERIAL_USE_MULTI_TRANSACTION
+int soft_serial_transaction(void) {
+    SSTD_t *trans = Transaction_table;
+#    else
+int soft_serial_transaction(int sstd_index) {
+    if (sstd_index > Transaction_table_size) return TRANSACTION_TYPE_ERROR;
+    SSTD_t *trans = &Transaction_table[sstd_index];
+#    endif
+    cli();
 
-  // signal to the target that we want to start a transaction
-  serial_output();
-  serial_low();
-  _delay_us(SLAVE_INT_WIDTH_US);
+    // signal to the target that we want to start a transaction
+    serial_output();
+    serial_low();
+    _delay_us(SLAVE_INT_WIDTH_US);
 
-#ifndef SERIAL_USE_MULTI_TRANSACTION
-  // wait for the target response
-  serial_input_with_pullup();
-  _delay_us(SLAVE_INT_RESPONSE_TIME);
+#    ifndef SERIAL_USE_MULTI_TRANSACTION
+    // wait for the target response
+    serial_input_with_pullup();
+    _delay_us(SLAVE_INT_RESPONSE_TIME);
+
+    // check if the target is present
+    if (serial_read_pin()) {
+        // target failed to pull the line low, assume not present
+        serial_output();
+        serial_high();
+        *trans->status = TRANSACTION_NO_RESPONSE;
+        sei();
+        return TRANSACTION_NO_RESPONSE;
+    }
 
-  // check if the target is present
-  if (serial_read_pin()) {
-    // target failed to pull the line low, assume not present
-    serial_output();
-    serial_high();
-    *trans->status = TRANSACTION_NO_RESPONSE;
-    sei();
-    return TRANSACTION_NO_RESPONSE;
-  }
-
-#else
-  // send transaction table index
-  int tid = (sstd_index<<3) | (7 & nibble_bits_count(sstd_index));
-  sync_send();
-  _delay_sub_us(TID_SEND_ADJUST);
-  serial_write_chunk(tid, 7);
-  serial_delay_half1();
-
-  // wait for the target response (step1 low->high)
-  serial_input_with_pullup();
-  while( !serial_read_pin() ) {
-      _delay_sub_us(2);
-  }
-
-  // check if the target is present (step2 high->low)
-  for( int i = 0; serial_read_pin(); i++ ) {
-      if (i > SLAVE_INT_ACK_WIDTH + 1) {
-          // slave failed to pull the line low, assume not present
-          serial_output();
-          serial_high();
-          *trans->status = TRANSACTION_NO_RESPONSE;
-          sei();
-          return TRANSACTION_NO_RESPONSE;
-      }
-      _delay_sub_us(SLAVE_INT_ACK_WIDTH_UNIT);
-  }
-#endif
+#    else
+    // send transaction table index
+    int tid = (sstd_index << 3) | (7 & nibble_bits_count(sstd_index));
+    sync_send();
+    _delay_sub_us(TID_SEND_ADJUST);
+    serial_write_chunk(tid, 7);
+    serial_delay_half1();
+
+    // wait for the target response (step1 low->high)
+    serial_input_with_pullup();
+    while (!serial_read_pin()) {
+        _delay_sub_us(2);
+    }
+
+    // check if the target is present (step2 high->low)
+    for (int i = 0; serial_read_pin(); i++) {
+        if (i > SLAVE_INT_ACK_WIDTH + 1) {
+            // slave failed to pull the line low, assume not present
+            serial_output();
+            serial_high();
+            *trans->status = TRANSACTION_NO_RESPONSE;
+            sei();
+            return TRANSACTION_NO_RESPONSE;
+        }
+        _delay_sub_us(SLAVE_INT_ACK_WIDTH_UNIT);
+    }
+#    endif
+
+    // initiator recive phase
+    // if the target is present syncronize with it
+    if (trans->target2initiator_buffer_size > 0) {
+        if (!serial_recive_packet((uint8_t *)trans->target2initiator_buffer, trans->target2initiator_buffer_size)) {
+            serial_output();
+            serial_high();
+            *trans->status = TRANSACTION_DATA_ERROR;
+            sei();
+            return TRANSACTION_DATA_ERROR;
+        }
+    }
+
+    // initiator switch to output
+    change_reciver2sender();
+
+    // initiator send phase
+    if (trans->initiator2target_buffer_size > 0) {
+        serial_send_packet((uint8_t *)trans->initiator2target_buffer, trans->initiator2target_buffer_size);
+    }
 
-  // initiator recive phase
-  // if the target is present syncronize with it
-  if( trans->target2initiator_buffer_size > 0 ) {
-      if (!serial_recive_packet((uint8_t *)trans->target2initiator_buffer,
-                                trans->target2initiator_buffer_size) ) {
-          serial_output();
-          serial_high();
-          *trans->status = TRANSACTION_DATA_ERROR;
-          sei();
-          return TRANSACTION_DATA_ERROR;
-      }
-   }
-
-  // initiator switch to output
-  change_reciver2sender();
-
-  // initiator send phase
-  if( trans->initiator2target_buffer_size > 0 ) {
-      serial_send_packet((uint8_t *)trans->initiator2target_buffer,
-                         trans->initiator2target_buffer_size);
-  }
-
-  // always, release the line when not in use
-  sync_send();
-
-  *trans->status = TRANSACTION_END;
-  sei();
-  return TRANSACTION_END;
+    // always, release the line when not in use
+    sync_send();
+
+    *trans->status = TRANSACTION_END;
+    sei();
+    return TRANSACTION_END;
 }
 
-#ifdef SERIAL_USE_MULTI_TRANSACTION
+#    ifdef SERIAL_USE_MULTI_TRANSACTION
 int soft_serial_get_and_clean_status(int sstd_index) {
     SSTD_t *trans = &Transaction_table[sstd_index];
     cli();
-    int retval = *trans->status;
-    *trans->status = 0;;
+    int retval     = *trans->status;
+    *trans->status = 0;
+    ;
     sei();
     return retval;
 }
-#endif
+#    endif
 
 #endif
 
diff --git a/quantum/split_common/serial.h b/quantum/split_common/serial.h
index 1c1e64006..53e66cf90 100644
--- a/quantum/split_common/serial.h
+++ b/quantum/split_common/serial.h
@@ -22,14 +22,14 @@
 // /////////////////////////////////////////////////////////////////
 
 // Soft Serial Transaction Descriptor
-typedef struct _SSTD_t  {
+typedef struct _SSTD_t {
     uint8_t *status;
-    uint8_t initiator2target_buffer_size;
+    uint8_t  initiator2target_buffer_size;
     uint8_t *initiator2target_buffer;
-    uint8_t target2initiator_buffer_size;
+    uint8_t  target2initiator_buffer_size;
     uint8_t *target2initiator_buffer;
 } SSTD_t;
-#define TID_LIMIT( table ) (sizeof(table) / sizeof(SSTD_t))
+#define TID_LIMIT(table) (sizeof(table) / sizeof(SSTD_t))
 
 // initiator is transaction start side
 void soft_serial_initiator_init(SSTD_t *sstd_table, int sstd_table_size);
@@ -39,12 +39,12 @@ void soft_serial_target_init(SSTD_t *sstd_table, int sstd_table_size);
 // initiator resullt
 #define TRANSACTION_END 0
 #define TRANSACTION_NO_RESPONSE 0x1
-#define TRANSACTION_DATA_ERROR  0x2
-#define TRANSACTION_TYPE_ERROR  0x4
+#define TRANSACTION_DATA_ERROR 0x2
+#define TRANSACTION_TYPE_ERROR 0x4
 #ifndef SERIAL_USE_MULTI_TRANSACTION
-int  soft_serial_transaction(void);
+int soft_serial_transaction(void);
 #else
-int  soft_serial_transaction(int sstd_index);
+int soft_serial_transaction(int sstd_index);
 #endif
 
 // target status
@@ -58,5 +58,5 @@ int  soft_serial_transaction(int sstd_index);
 //    or TRANSACTION_ACCEPTED
 #define TRANSACTION_ACCEPTED 0x8
 #ifdef SERIAL_USE_MULTI_TRANSACTION
-int  soft_serial_get_and_clean_status(int sstd_index);
+int soft_serial_get_and_clean_status(int sstd_index);
 #endif
diff --git a/quantum/split_common/split_util.c b/quantum/split_common/split_util.c
index d7ed6989f..5114b188e 100644
--- a/quantum/split_common/split_util.c
+++ b/quantum/split_common/split_util.c
@@ -7,87 +7,75 @@
 #include "quantum.h"
 
 #ifdef EE_HANDS
-#   include "tmk_core/common/eeprom.h"
-#   include "eeconfig.h"
+#    include "tmk_core/common/eeprom.h"
+#    include "eeconfig.h"
 #endif
 
 #if defined(RGBLIGHT_ENABLE) && defined(RGBLED_SPLIT)
-#include "rgblight.h"
+#    include "rgblight.h"
 #endif
 
 volatile bool isLeftHand = true;
 
-__attribute__((weak))
-bool is_keyboard_left(void) {
-  #if defined(SPLIT_HAND_PIN)
+__attribute__((weak)) bool is_keyboard_left(void) {
+#if defined(SPLIT_HAND_PIN)
     // Test pin SPLIT_HAND_PIN for High/Low, if low it's right hand
     setPinInput(SPLIT_HAND_PIN);
     return readPin(SPLIT_HAND_PIN);
-  #elif defined(EE_HANDS)
+#elif defined(EE_HANDS)
     return eeprom_read_byte(EECONFIG_HANDEDNESS);
-  #elif defined(MASTER_RIGHT)
+#elif defined(MASTER_RIGHT)
     return !is_keyboard_master();
-  #endif
+#endif
 
-  return is_keyboard_master();
+    return is_keyboard_master();
 }
 
-__attribute__((weak))
-bool is_keyboard_master(void)
-{
+__attribute__((weak)) bool is_keyboard_master(void) {
 #ifdef __AVR__
-  static enum { UNKNOWN, MASTER, SLAVE } usbstate = UNKNOWN;
+    static enum { UNKNOWN, MASTER, SLAVE } usbstate = UNKNOWN;
 
-  // only check once, as this is called often
-  if (usbstate == UNKNOWN)
-  {
-    USBCON |= (1 << OTGPADE);  // enables VBUS pad
-    wait_us(5);
+    // only check once, as this is called often
+    if (usbstate == UNKNOWN) {
+        USBCON |= (1 << OTGPADE);  // enables VBUS pad
+        wait_us(5);
 
-    usbstate = (USBSTA & (1 << VBUS)) ? MASTER : SLAVE;  // checks state of VBUS
-  }
+        usbstate = (USBSTA & (1 << VBUS)) ? MASTER : SLAVE;  // checks state of VBUS
+    }
 
-  return (usbstate == MASTER);
+    return (usbstate == MASTER);
 #else
-  return true;
+    return true;
 #endif
 }
 
 static void keyboard_master_setup(void) {
 #if defined(USE_I2C) || defined(EH)
-  #ifdef SSD1306OLED
-    matrix_master_OLED_init ();
-  #endif
+#    ifdef SSD1306OLED
+    matrix_master_OLED_init();
+#    endif
 #endif
-  transport_master_init();
+    transport_master_init();
 }
 
-static void keyboard_slave_setup(void)
-{
-  transport_slave_init();
-}
+static void keyboard_slave_setup(void) { transport_slave_init(); }
 
 // this code runs before the usb and keyboard is initialized
-void matrix_setup(void)
-{
-  isLeftHand = is_keyboard_left();
+void matrix_setup(void) {
+    isLeftHand = is_keyboard_left();
 
 #if defined(RGBLIGHT_ENABLE) && defined(RGBLED_SPLIT)
-  uint8_t num_rgb_leds_split[2] = RGBLED_SPLIT;
-  if (isLeftHand) {
-    rgblight_set_clipping_range(0, num_rgb_leds_split[0]);
-  }
-  else {
-    rgblight_set_clipping_range(num_rgb_leds_split[0], num_rgb_leds_split[1]);
-  }
+    uint8_t num_rgb_leds_split[2] = RGBLED_SPLIT;
+    if (isLeftHand) {
+        rgblight_set_clipping_range(0, num_rgb_leds_split[0]);
+    } else {
+        rgblight_set_clipping_range(num_rgb_leds_split[0], num_rgb_leds_split[1]);
+    }
 #endif
 
-  if (is_keyboard_master())
-  {
-    keyboard_master_setup();
-  }
-  else
-  {
-    keyboard_slave_setup();
-  }
+    if (is_keyboard_master()) {
+        keyboard_master_setup();
+    } else {
+        keyboard_slave_setup();
+    }
 }
diff --git a/quantum/split_common/split_util.h b/quantum/split_common/split_util.h
index 20f7535bf..f41c77605 100644
--- a/quantum/split_common/split_util.h
+++ b/quantum/split_common/split_util.h
@@ -7,4 +7,4 @@
 
 extern volatile bool isLeftHand;
 
-void matrix_master_OLED_init (void);
+void matrix_master_OLED_init(void);
diff --git a/quantum/split_common/transport.c b/quantum/split_common/transport.c
index ba21d0c7b..3c783dc56 100644
--- a/quantum/split_common/transport.c
+++ b/quantum/split_common/transport.c
@@ -8,101 +8,100 @@
 #define ROWS_PER_HAND (MATRIX_ROWS / 2)
 
 #ifdef RGBLIGHT_ENABLE
-#  include "rgblight.h"
+#    include "rgblight.h"
 #endif
 
 #ifdef BACKLIGHT_ENABLE
-#  include "backlight.h"
+#    include "backlight.h"
 #endif
 
 #ifdef ENCODER_ENABLE
-#  include "encoder.h"
+#    include "encoder.h"
 static pin_t encoders_pad[] = ENCODERS_PAD_A;
-#  define NUMBER_OF_ENCODERS (sizeof(encoders_pad)/sizeof(pin_t))
+#    define NUMBER_OF_ENCODERS (sizeof(encoders_pad) / sizeof(pin_t))
 #endif
 
 #if defined(USE_I2C) || defined(EH)
 
-#  include "i2c_master.h"
-#  include "i2c_slave.h"
+#    include "i2c_master.h"
+#    include "i2c_slave.h"
 
 typedef struct _I2C_slave_buffer_t {
     matrix_row_t smatrix[ROWS_PER_HAND];
     uint8_t      backlight_level;
-#if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
+#    if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
     rgblight_syncinfo_t rgblight_sync;
-#endif
-#ifdef ENCODER_ENABLE
+#    endif
+#    ifdef ENCODER_ENABLE
     uint8_t encoder_state[NUMBER_OF_ENCODERS];
-#endif
+#    endif
 } I2C_slave_buffer_t;
 
-static I2C_slave_buffer_t * const i2c_buffer = (I2C_slave_buffer_t *)i2c_slave_reg;
+static I2C_slave_buffer_t *const i2c_buffer = (I2C_slave_buffer_t *)i2c_slave_reg;
 
-#  define I2C_BACKLIGHT_START offsetof(I2C_slave_buffer_t, backlight_level)
-#  define I2C_RGB_START offsetof(I2C_slave_buffer_t, rgblight_sync)
-#  define I2C_KEYMAP_START offsetof(I2C_slave_buffer_t, smatrix)
-#  define I2C_ENCODER_START offsetof(I2C_slave_buffer_t, encoder_state)
+#    define I2C_BACKLIGHT_START offsetof(I2C_slave_buffer_t, backlight_level)
+#    define I2C_RGB_START offsetof(I2C_slave_buffer_t, rgblight_sync)
+#    define I2C_KEYMAP_START offsetof(I2C_slave_buffer_t, smatrix)
+#    define I2C_ENCODER_START offsetof(I2C_slave_buffer_t, encoder_state)
 
-#  define TIMEOUT 100
+#    define TIMEOUT 100
 
-#  ifndef SLAVE_I2C_ADDRESS
-#    define SLAVE_I2C_ADDRESS 0x32
-#  endif
+#    ifndef SLAVE_I2C_ADDRESS
+#        define SLAVE_I2C_ADDRESS 0x32
+#    endif
 
 // Get rows from other half over i2c
 bool transport_master(matrix_row_t matrix[]) {
-  i2c_readReg(SLAVE_I2C_ADDRESS, I2C_KEYMAP_START, (void *)matrix, sizeof(i2c_buffer->smatrix), TIMEOUT);
-
-  // write backlight info
-#  ifdef BACKLIGHT_ENABLE
-  uint8_t level = is_backlight_enabled() ? get_backlight_level() : 0;
-  if (level != i2c_buffer->backlight_level) {
-    if (i2c_writeReg(SLAVE_I2C_ADDRESS, I2C_BACKLIGHT_START, (void *)&level, sizeof(level), TIMEOUT) >= 0) {
-      i2c_buffer->backlight_level = level;
+    i2c_readReg(SLAVE_I2C_ADDRESS, I2C_KEYMAP_START, (void *)matrix, sizeof(i2c_buffer->smatrix), TIMEOUT);
+
+    // write backlight info
+#    ifdef BACKLIGHT_ENABLE
+    uint8_t level = is_backlight_enabled() ? get_backlight_level() : 0;
+    if (level != i2c_buffer->backlight_level) {
+        if (i2c_writeReg(SLAVE_I2C_ADDRESS, I2C_BACKLIGHT_START, (void *)&level, sizeof(level), TIMEOUT) >= 0) {
+            i2c_buffer->backlight_level = level;
+        }
     }
-  }
-#  endif
-
-#  if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
-  if (rgblight_get_change_flags()) {
-    rgblight_syncinfo_t rgblight_sync;
-    rgblight_get_syncinfo(&rgblight_sync);
-    if (i2c_writeReg(SLAVE_I2C_ADDRESS, I2C_RGB_START,
-                     (void *)&rgblight_sync, sizeof(rgblight_sync), TIMEOUT) >= 0) {
-      rgblight_clear_change_flags();
+#    endif
+
+#    if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
+    if (rgblight_get_change_flags()) {
+        rgblight_syncinfo_t rgblight_sync;
+        rgblight_get_syncinfo(&rgblight_sync);
+        if (i2c_writeReg(SLAVE_I2C_ADDRESS, I2C_RGB_START, (void *)&rgblight_sync, sizeof(rgblight_sync), TIMEOUT) >= 0) {
+            rgblight_clear_change_flags();
+        }
     }
-  }
-#  endif
+#    endif
 
-#  ifdef ENCODER_ENABLE
-  i2c_readReg(SLAVE_I2C_ADDRESS, I2C_ENCODER_START, (void *)i2c_buffer->encoder_state, sizeof(i2c_buffer->encoder_state), TIMEOUT);
-  encoder_update_raw(i2c_buffer->encoder_state);
-#  endif
+#    ifdef ENCODER_ENABLE
+    i2c_readReg(SLAVE_I2C_ADDRESS, I2C_ENCODER_START, (void *)i2c_buffer->encoder_state, sizeof(i2c_buffer->encoder_state), TIMEOUT);
+    encoder_update_raw(i2c_buffer->encoder_state);
+#    endif
 
-  return true;
+    return true;
 }
 
 void transport_slave(matrix_row_t matrix[]) {
-  // Copy matrix to I2C buffer
-  memcpy((void*)i2c_buffer->smatrix, (void *)matrix, sizeof(i2c_buffer->smatrix));
+    // Copy matrix to I2C buffer
+    memcpy((void *)i2c_buffer->smatrix, (void *)matrix, sizeof(i2c_buffer->smatrix));
 
 // Read Backlight Info
-#  ifdef BACKLIGHT_ENABLE
-  backlight_set(i2c_buffer->backlight_level);
-#  endif
-
-#  if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
-  // Update the RGB with the new data
-  if (i2c_buffer->rgblight_sync.status.change_flags != 0) {
-      rgblight_update_sync(&i2c_buffer->rgblight_sync, false);
-      i2c_buffer->rgblight_sync.status.change_flags = 0;
-  }
-#  endif
-
-#  ifdef ENCODER_ENABLE
-  encoder_state_raw(i2c_buffer->encoder_state);
-#  endif
+#    ifdef BACKLIGHT_ENABLE
+    backlight_set(i2c_buffer->backlight_level);
+#    endif
+
+#    if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
+    // Update the RGB with the new data
+    if (i2c_buffer->rgblight_sync.status.change_flags != 0) {
+        rgblight_update_sync(&i2c_buffer->rgblight_sync, false);
+        i2c_buffer->rgblight_sync.status.change_flags = 0;
+    }
+#    endif
+
+#    ifdef ENCODER_ENABLE
+    encoder_state_raw(i2c_buffer->encoder_state);
+#    endif
 }
 
 void transport_master_init(void) { i2c_init(); }
@@ -111,25 +110,25 @@ void transport_slave_init(void) { i2c_slave_init(SLAVE_I2C_ADDRESS); }
 
 #else  // USE_SERIAL
 
-#  include "serial.h"
+#    include "serial.h"
 
 typedef struct _Serial_s2m_buffer_t {
-  // TODO: if MATRIX_COLS > 8 change to uint8_t packed_matrix[] for pack/unpack
-  matrix_row_t smatrix[ROWS_PER_HAND];
+    // TODO: if MATRIX_COLS > 8 change to uint8_t packed_matrix[] for pack/unpack
+    matrix_row_t smatrix[ROWS_PER_HAND];
 
-#  ifdef ENCODER_ENABLE
-  uint8_t encoder_state[NUMBER_OF_ENCODERS];
-#  endif
+#    ifdef ENCODER_ENABLE
+    uint8_t      encoder_state[NUMBER_OF_ENCODERS];
+#    endif
 
 } Serial_s2m_buffer_t;
 
 typedef struct _Serial_m2s_buffer_t {
-#  ifdef BACKLIGHT_ENABLE
-  uint8_t           backlight_level;
-#  endif
+#    ifdef BACKLIGHT_ENABLE
+    uint8_t backlight_level;
+#    endif
 } Serial_m2s_buffer_t;
 
-#if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
+#    if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
 // When MCUs on both sides drive their respective RGB LED chains,
 // it is necessary to synchronize, so it is necessary to communicate RGB
 // information. In that case, define RGBLIGHT_SPLIT with info on the number
@@ -144,7 +143,7 @@ typedef struct _Serial_rgblight_t {
 
 volatile Serial_rgblight_t serial_rgblight = {};
 uint8_t volatile status_rgblight           = 0;
-#endif
+#    endif
 
 volatile Serial_s2m_buffer_t serial_s2m_buffer = {};
 volatile Serial_m2s_buffer_t serial_m2s_buffer = {};
@@ -152,102 +151,99 @@ uint8_t volatile status0                       = 0;
 
 enum serial_transaction_id {
     GET_SLAVE_MATRIX = 0,
-#if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
+#    if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
     PUT_RGBLIGHT,
-#endif
+#    endif
 };
 
 SSTD_t transactions[] = {
-    [GET_SLAVE_MATRIX] = {
-        (uint8_t *)&status0,
-        sizeof(serial_m2s_buffer),
-        (uint8_t *)&serial_m2s_buffer,
-        sizeof(serial_s2m_buffer),
-        (uint8_t *)&serial_s2m_buffer,
-    },
-#if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
-    [PUT_RGBLIGHT] = {
-        (uint8_t *)&status_rgblight,
-        sizeof(serial_rgblight),
-        (uint8_t *)&serial_rgblight,
-        0, NULL // no slave to master transfer
-    },
-#endif
+    [GET_SLAVE_MATRIX] =
+        {
+            (uint8_t *)&status0,
+            sizeof(serial_m2s_buffer),
+            (uint8_t *)&serial_m2s_buffer,
+            sizeof(serial_s2m_buffer),
+            (uint8_t *)&serial_s2m_buffer,
+        },
+#    if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
+    [PUT_RGBLIGHT] =
+        {
+            (uint8_t *)&status_rgblight, sizeof(serial_rgblight), (uint8_t *)&serial_rgblight, 0, NULL  // no slave to master transfer
+        },
+#    endif
 };
 
 void transport_master_init(void) { soft_serial_initiator_init(transactions, TID_LIMIT(transactions)); }
 
 void transport_slave_init(void) { soft_serial_target_init(transactions, TID_LIMIT(transactions)); }
 
-#if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
+#    if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
 
 // rgblight synchronization information communication.
 
 void transport_rgblight_master(void) {
-  if (rgblight_get_change_flags()) {
-    rgblight_get_syncinfo((rgblight_syncinfo_t *)&serial_rgblight.rgblight_sync);
-    if (soft_serial_transaction(PUT_RGBLIGHT) == TRANSACTION_END) {
-        rgblight_clear_change_flags();
+    if (rgblight_get_change_flags()) {
+        rgblight_get_syncinfo((rgblight_syncinfo_t *)&serial_rgblight.rgblight_sync);
+        if (soft_serial_transaction(PUT_RGBLIGHT) == TRANSACTION_END) {
+            rgblight_clear_change_flags();
+        }
     }
-  }
 }
 
 void transport_rgblight_slave(void) {
-  if (status_rgblight == TRANSACTION_ACCEPTED) {
-    rgblight_update_sync((rgblight_syncinfo_t *)&serial_rgblight.rgblight_sync,
-                         false);
-    status_rgblight = TRANSACTION_END;
-  }
+    if (status_rgblight == TRANSACTION_ACCEPTED) {
+        rgblight_update_sync((rgblight_syncinfo_t *)&serial_rgblight.rgblight_sync, false);
+        status_rgblight = TRANSACTION_END;
+    }
 }
 
-#else
-#define transport_rgblight_master()
-#define transport_rgblight_slave()
-#endif
+#    else
+#        define transport_rgblight_master()
+#        define transport_rgblight_slave()
+#    endif
 
 bool transport_master(matrix_row_t matrix[]) {
-#ifndef SERIAL_USE_MULTI_TRANSACTION
-  if (soft_serial_transaction() != TRANSACTION_END) {
-    return false;
-  }
-#else
-  transport_rgblight_master();
-  if (soft_serial_transaction(GET_SLAVE_MATRIX) != TRANSACTION_END) {
-    return false;
-  }
-#endif
+#    ifndef SERIAL_USE_MULTI_TRANSACTION
+    if (soft_serial_transaction() != TRANSACTION_END) {
+        return false;
+    }
+#    else
+    transport_rgblight_master();
+    if (soft_serial_transaction(GET_SLAVE_MATRIX) != TRANSACTION_END) {
+        return false;
+    }
+#    endif
 
-  // TODO:  if MATRIX_COLS > 8 change to unpack()
-  for (int i = 0; i < ROWS_PER_HAND; ++i) {
-    matrix[i] = serial_s2m_buffer.smatrix[i];
-  }
+    // TODO:  if MATRIX_COLS > 8 change to unpack()
+    for (int i = 0; i < ROWS_PER_HAND; ++i) {
+        matrix[i] = serial_s2m_buffer.smatrix[i];
+    }
 
-#  ifdef BACKLIGHT_ENABLE
-  // Write backlight level for slave to read
-  serial_m2s_buffer.backlight_level = is_backlight_enabled() ? get_backlight_level() : 0;
-#  endif
+#    ifdef BACKLIGHT_ENABLE
+    // Write backlight level for slave to read
+    serial_m2s_buffer.backlight_level = is_backlight_enabled() ? get_backlight_level() : 0;
+#    endif
 
-#  ifdef ENCODER_ENABLE
-  encoder_update_raw((uint8_t *)serial_s2m_buffer.encoder_state);
-#  endif
+#    ifdef ENCODER_ENABLE
+    encoder_update_raw((uint8_t *)serial_s2m_buffer.encoder_state);
+#    endif
 
-  return true;
+    return true;
 }
 
 void transport_slave(matrix_row_t matrix[]) {
-  transport_rgblight_slave();
-  // TODO: if MATRIX_COLS > 8 change to pack()
-  for (int i = 0; i < ROWS_PER_HAND; ++i) {
-    serial_s2m_buffer.smatrix[i] = matrix[i];
-  }
-#  ifdef BACKLIGHT_ENABLE
-  backlight_set(serial_m2s_buffer.backlight_level);
-#  endif
-
-#  ifdef ENCODER_ENABLE
-  encoder_state_raw((uint8_t *)serial_s2m_buffer.encoder_state);
-#  endif
+    transport_rgblight_slave();
+    // TODO: if MATRIX_COLS > 8 change to pack()
+    for (int i = 0; i < ROWS_PER_HAND; ++i) {
+        serial_s2m_buffer.smatrix[i] = matrix[i];
+    }
+#    ifdef BACKLIGHT_ENABLE
+    backlight_set(serial_m2s_buffer.backlight_level);
+#    endif
 
+#    ifdef ENCODER_ENABLE
+    encoder_state_raw((uint8_t *)serial_s2m_buffer.encoder_state);
+#    endif
 }
 
 #endif