refactor SPLIT_KEYBOARD, OLED_DRIVER_ENABLE (#10405)

33 files changed, 236 insertions, 2539 deletions

diff --git a/keyboards/claw44/claw44.c b/keyboards/claw44/claw44.c
index f564fb623b..d87103065c 100644
--- a/keyboards/claw44/claw44.c
+++ b/keyboards/claw44/claw44.c
@@ -1,10 +1 @@
 #include "claw44.h"
-#include "ssd1306.h"
-
-bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
-#ifdef SSD1306OLED
-  return process_record_gfx(keycode,record) && process_record_user(keycode, record);
-#else
-  return process_record_user(keycode, record);
-#endif
-}
diff --git a/keyboards/claw44/config.h b/keyboards/claw44/config.h
index fb1cdf3962..0bd74ff833 100644
--- a/keyboards/claw44/config.h
+++ b/keyboards/claw44/config.h
@@ -19,10 +19,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #pragma once
 
 #include "config_common.h"
-#include <serial_config.h>
-
-#define USE_I2C
-#define USE_SERIAL
 
 #define NO_ACTION_MACRO
 #define NO_ACTION_FUNCTION
diff --git a/keyboards/claw44/i2c.c b/keyboards/claw44/i2c.c
deleted file mode 100644
index 4bee5c6398..0000000000
--- a/keyboards/claw44/i2c.c
+++ /dev/null
@@ -1,162 +0,0 @@
-#include <util/twi.h>
-#include <avr/io.h>
-#include <stdlib.h>
-#include <avr/interrupt.h>
-#include <util/twi.h>
-#include <stdbool.h>
-#include "i2c.h"
-
-#ifdef USE_I2C
-
-// Limits the amount of we wait for any one i2c transaction.
-// Since were running SCL line 100kHz (=> 10μs/bit), and each transactions is
-// 9 bits, a single transaction will take around 90μs to complete.
-//
-// (F_CPU/SCL_CLOCK)  =>  # of μC cycles to transfer a bit
-// poll loop takes at least 8 clock cycles to execute
-#define I2C_LOOP_TIMEOUT (9+1)*(F_CPU/SCL_CLOCK)/8
-
-#define BUFFER_POS_INC() (slave_buffer_pos = (slave_buffer_pos+1)%SLAVE_BUFFER_SIZE)
-
-volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
-
-static volatile uint8_t slave_buffer_pos;
-static volatile bool slave_has_register_set = false;
-
-// Wait for an i2c operation to finish
-inline static
-void i2c_delay(void) {
-  uint16_t lim = 0;
-  while(!(TWCR & (1<<TWINT)) && lim < I2C_LOOP_TIMEOUT)
-    lim++;
-
-  // easier way, but will wait slightly longer
-  // _delay_us(100);
-}
-
-// Setup twi to run at 100kHz or 400kHz (see ./i2c.h SCL_CLOCK)
-void i2c_master_init(void) {
-  // no prescaler
-  TWSR = 0;
-  // Set TWI clock frequency to SCL_CLOCK. Need TWBR>10.
-  // Check datasheets for more info.
-  TWBR = ((F_CPU/SCL_CLOCK)-16)/2;
-}
-
-// Start a transaction with the given i2c slave address. The direction of the
-// transfer is set with I2C_READ and I2C_WRITE.
-// returns: 0 => success
-//          1 => error
-uint8_t i2c_master_start(uint8_t address) {
-  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTA);
-
-  i2c_delay();
-
-  // check that we started successfully
-  if ( (TW_STATUS != TW_START) && (TW_STATUS != TW_REP_START))
-    return 1;
-
-  TWDR = address;
-  TWCR = (1<<TWINT) | (1<<TWEN);
-
-  i2c_delay();
-
-  if ( (TW_STATUS != TW_MT_SLA_ACK) && (TW_STATUS != TW_MR_SLA_ACK) )
-    return 1; // slave did not acknowledge
-  else
-    return 0; // success
-}
-
-
-// Finish the i2c transaction.
-void i2c_master_stop(void) {
-  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-
-  uint16_t lim = 0;
-  while(!(TWCR & (1<<TWSTO)) && lim < I2C_LOOP_TIMEOUT)
-    lim++;
-}
-
-// Write one byte to the i2c slave.
-// returns 0 => slave ACK
-//         1 => slave NACK
-uint8_t i2c_master_write(uint8_t data) {
-  TWDR = data;
-  TWCR = (1<<TWINT) | (1<<TWEN);
-
-  i2c_delay();
-
-  // check if the slave acknowledged us
-  return (TW_STATUS == TW_MT_DATA_ACK) ? 0 : 1;
-}
-
-// Read one byte from the i2c slave. If ack=1 the slave is acknowledged,
-// if ack=0 the acknowledge bit is not set.
-// returns: byte read from i2c device
-uint8_t i2c_master_read(int ack) {
-  TWCR = (1<<TWINT) | (1<<TWEN) | (ack<<TWEA);
-
-  i2c_delay();
-  return TWDR;
-}
-
-void i2c_reset_state(void) {
-  TWCR = 0;
-}
-
-void i2c_slave_init(uint8_t address) {
-  TWAR = address << 0; // slave i2c address
-  // TWEN  - twi enable
-  // TWEA  - enable address acknowledgement
-  // TWINT - twi interrupt flag
-  // TWIE  - enable the twi interrupt
-  TWCR = (1<<TWIE) | (1<<TWEA) | (1<<TWINT) | (1<<TWEN);
-}
-
-ISR(TWI_vect);
-
-ISR(TWI_vect) {
-  uint8_t ack = 1;
-  switch(TW_STATUS) {
-    case TW_SR_SLA_ACK:
-      // this device has been addressed as a slave receiver
-      slave_has_register_set = false;
-      break;
-
-    case TW_SR_DATA_ACK:
-      // this device has received data as a slave receiver
-      // The first byte that we receive in this transaction sets the location
-      // of the read/write location of the slaves memory that it exposes over
-      // i2c.  After that, bytes will be written at slave_buffer_pos, incrementing
-      // slave_buffer_pos after each write.
-      if(!slave_has_register_set) {
-        slave_buffer_pos = TWDR;
-        // don't acknowledge the master if this memory loctaion is out of bounds
-        if ( slave_buffer_pos >= SLAVE_BUFFER_SIZE ) {
-          ack = 0;
-          slave_buffer_pos = 0;
-        }
-        slave_has_register_set = true;
-      } else {
-        i2c_slave_buffer[slave_buffer_pos] = TWDR;
-        BUFFER_POS_INC();
-      }
-      break;
-
-    case TW_ST_SLA_ACK:
-    case TW_ST_DATA_ACK:
-      // master has addressed this device as a slave transmitter and is
-      // requesting data.
-      TWDR = i2c_slave_buffer[slave_buffer_pos];
-      BUFFER_POS_INC();
-      break;
-
-    case TW_BUS_ERROR: // something went wrong, reset twi state
-      TWCR = 0;
-    default:
-      break;
-  }
-  // Reset everything, so we are ready for the next TWI interrupt
-  TWCR |= (1<<TWIE) | (1<<TWINT) | (ack<<TWEA) | (1<<TWEN);
-}
-#endif
diff --git a/keyboards/claw44/i2c.h b/keyboards/claw44/i2c.h
deleted file mode 100644
index 710662c7ab..0000000000
--- a/keyboards/claw44/i2c.h
+++ /dev/null
@@ -1,46 +0,0 @@
-#pragma once
-
-#include <stdint.h>
-
-#ifndef F_CPU
-#define F_CPU 16000000UL
-#endif
-
-#define I2C_READ 1
-#define I2C_WRITE 0
-
-#define I2C_ACK 1
-#define I2C_NACK 0
-
-#define SLAVE_BUFFER_SIZE 0x10
-
-// i2c SCL clock frequency 400kHz
-#define SCL_CLOCK  400000L
-
-extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
-
-void i2c_master_init(void);
-uint8_t i2c_master_start(uint8_t address);
-void i2c_master_stop(void);
-uint8_t i2c_master_write(uint8_t data);
-uint8_t i2c_master_read(int);
-void i2c_reset_state(void);
-void i2c_slave_init(uint8_t address);
-
-
-static inline unsigned char i2c_start_read(unsigned char addr) {
-  return i2c_master_start((addr << 1) | I2C_READ);
-}
-
-static inline unsigned char i2c_start_write(unsigned char addr) {
-  return i2c_master_start((addr << 1) | I2C_WRITE);
-}
-
-// from SSD1306 scrips
-extern unsigned char i2c_rep_start(unsigned char addr);
-extern void i2c_start_wait(unsigned char addr);
-extern unsigned char i2c_readAck(void);
-extern unsigned char i2c_readNak(void);
-extern unsigned char i2c_read(unsigned char ack);
-
-#define i2c_read(ack)  (ack) ? i2c_readAck() : i2c_readNak();
diff --git a/keyboards/claw44/keymaps/default/config.h b/keyboards/claw44/keymaps/default/config.h
index eff6ad3c7b..d2ea02545b 100644
--- a/keyboards/claw44/keymaps/default/config.h
+++ b/keyboards/claw44/keymaps/default/config.h
@@ -20,16 +20,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-//#define USE_MATRIX_I2C
-
-/* Select hand configuration */
-
 #define MASTER_LEFT
-// #define MASTER_RIGHT
-// #define EE_HANDS
-
-#define SSD1306OLED
-
-#define USE_SERIAL_PD2
-
-#define TAPPING_TERM 200
diff --git a/keyboards/claw44/keymaps/default/keymap.c b/keyboards/claw44/keymaps/default/keymap.c
index 088087c773..65dbd67d98 100644
--- a/keyboards/claw44/keymaps/default/keymap.c
+++ b/keyboards/claw44/keymaps/default/keymap.c
@@ -1,168 +1,59 @@
 #include QMK_KEYBOARD_H
-#ifdef PROTOCOL_LUFA
-  #include "lufa.h"
-  #include "split_util.h"
-#endif
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
-
-
-extern uint8_t is_master;
 
 // Each layer gets a name for readability, which is then used in the keymap matrix below.
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
 
-enum custom_keycodes {
-  QWERTY = SAFE_RANGE,
-  LOWER,
-  RAISE
-};
-
-enum macro_keycodes {
-  KC_SAMPLEMACRO,
+enum layer_number {
+    _QWERTY = 0,
+    _RAISE,
+    _LOWER,
 };
 
 #define KC_ KC_TRNS
 #define KC_RST RESET
-#define KC_L_SPC LT(_LOWER, KC_SPC) // lower
-#define KC_R_ENT LT(_RAISE, KC_ENT) // raise
-#define KC_G_JA LGUI_T(KC_LANG1) // cmd or win
-#define KC_G_EN LGUI_T(KC_LANG2) // cmd or win
-#define KC_C_BS LCTL_T(KC_BSPC) // ctrl
-#define KC_A_DEL ALT_T(KC_DEL) // alt
+#define KC_L_SPC LT(_LOWER, KC_SPC)  // lower
+#define KC_R_ENT LT(_RAISE, KC_ENT)  // raise
+#define KC_G_JA LGUI_T(KC_LANG1)     // cmd or win
+#define KC_G_EN LGUI_T(KC_LANG2)     // cmd or win
+#define KC_C_BS LCTL_T(KC_BSPC)      // ctrl
+#define KC_A_DEL ALT_T(KC_DEL)       // alt
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
-  [_QWERTY] = LAYOUT( \
-  //,--------+--------+---------+--------+---------+--------.   ,--------+---------+--------+---------+--------+--------.
-     KC_ESC , KC_Q   , KC_W    , KC_E   , KC_R    , KC_T   ,     KC_Y   , KC_U    , KC_I   , KC_O    , KC_P   , KC_MINS,
-  //|--------+--------+---------+--------+---------+--------|   |--------+---------+--------+---------+--------+--------|
-     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_LSFT, KC_Z   , KC_X    , KC_C   , KC_V    , KC_B   ,     KC_N   , KC_M    , KC_COMM, KC_DOT  , KC_SLSH, KC_RSFT,
-  //`--------+--------+---------+--------+---------+--------/   \--------+---------+--------+---------+--------+--------'
-                       KC_A_DEL, KC_G_EN, KC_L_SPC, KC_C_BS,     KC_C_BS, KC_R_ENT, KC_G_JA, KC_A_DEL
-  //                 `----------+--------+---------+--------'   `--------+---------+--------+---------'
-  ),
-
-  //   \ ^ ! & |  @ = + * % -
-  // ( # $ " ' ~  ← ↓ ↑ → ` )
-  //         { [  ] }
-
-  [_RAISE] = LAYOUT( \
-  //,--------+--------+--------+--------+--------+--------.   ,--------+--------+--------+--------+--------+--------.
-     _______, KC_BSLS, KC_CIRC, KC_EXLM, KC_AMPR, KC_PIPE,     KC_AT  , KC_EQL , KC_PLUS, KC_ASTR, KC_PERC, KC_MINS,
-  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
-     KC_LPRN, KC_HASH, KC_DLR , KC_DQT , KC_QUOT, KC_TILD,     KC_LEFT, KC_DOWN,  KC_UP , KC_RGHT, KC_GRV , KC_RPRN,
-  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
-     _______, _______, _______, _______, KC_LCBR, KC_LBRC,     KC_RBRC, KC_RCBR, _______, _______, _______, _______,
-  //`--------+--------+--------+--------+--------+--------/   \--------+--------+--------+--------+--------+--------'
-                       _______, _______, _______, _______,     _______, _______, _______, RESET
-  //                  `--------+--------+--------+--------'   `--------+--------+--------+--------'
-  ),
-
-  [_LOWER] = LAYOUT( \
-  //,--------+--------+--------+--------+--------+--------.   ,--------+--------+--------+--------+--------+--------.
-     KC_F1  , KC_F2  , KC_F3  , KC_F4  , KC_F5  , KC_F6  ,     _______, KC_EQL , KC_PLUS, KC_ASTR, KC_PERC, KC_MINS,
-  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
-     _______, KC_1   , KC_2   , KC_3   , KC_4   , KC_5   ,     KC_6   , KC_7   , KC_8   , KC_9   , KC_0   , _______,
-  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
-     KC_F7  , KC_F8  , KC_F9  , KC_F10 , KC_F11 , KC_F12 ,     _______, _______, KC_COMM, KC_DOT , KC_SLSH, _______,
-  //`--------+--------+--------+--------+--------+--------/   \--------+--------+--------+--------+--------+--------'
-                       RESET  , _______, _______, _______,     _______, _______, _______, _______
-  //                  `--------+--------+--------+--------'   `--------+--------+--------+--------'
-  ),
+    [_QWERTY] = LAYOUT( \
+    //,--------+--------+---------+--------+---------+--------.   ,--------+---------+--------+---------+--------+--------.
+       KC_ESC , KC_Q   , KC_W    , KC_E   , KC_R    , KC_T   ,     KC_Y   , KC_U    , KC_I   , KC_O    , KC_P   , KC_MINS,
+    //|--------+--------+---------+--------+---------+--------|   |--------+---------+--------+---------+--------+--------|
+       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_LSFT, KC_Z   , KC_X    , KC_C   , KC_V    , KC_B   ,     KC_N   , KC_M    , KC_COMM, KC_DOT  , KC_SLSH, KC_RSFT,
+    //`--------+--------+---------+--------+---------+--------/   \--------+---------+--------+---------+--------+--------'
+                         KC_A_DEL, KC_G_EN, KC_L_SPC, KC_C_BS,     KC_C_BS, KC_R_ENT, KC_G_JA, KC_A_DEL
+    //                 `----------+--------+---------+--------'   `--------+---------+--------+---------'
+    ),
+
+    [_RAISE] = LAYOUT( \
+    //,--------+--------+--------+--------+--------+--------.   ,--------+--------+--------+--------+--------+--------.
+       _______, KC_BSLS, KC_CIRC, KC_EXLM, KC_AMPR, KC_PIPE,     KC_AT  , KC_EQL , KC_PLUS, KC_ASTR, KC_PERC, KC_MINS,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+       KC_LPRN, KC_HASH, KC_DLR , KC_DQT , KC_QUOT, KC_TILD,     KC_LEFT, KC_DOWN,  KC_UP , KC_RGHT, KC_GRV , KC_RPRN,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+       _______, _______, _______, _______, KC_LCBR, KC_LBRC,     KC_RBRC, KC_RCBR, _______, _______, _______, _______,
+    //`--------+--------+--------+--------+--------+--------/   \--------+--------+--------+--------+--------+--------'
+                         _______, _______, _______, _______,     _______, _______, _______, RESET
+    //                  `--------+--------+--------+--------'   `--------+--------+--------+--------'
+    ),
+
+    [_LOWER] = LAYOUT( \
+    //,--------+--------+--------+--------+--------+--------.   ,--------+--------+--------+--------+--------+--------.
+       KC_F1  , KC_F2  , KC_F3  , KC_F4  , KC_F5  , KC_F6  ,     _______, KC_EQL , KC_PLUS, KC_ASTR, KC_PERC, KC_MINS,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+       _______, KC_1   , KC_2   , KC_3   , KC_4   , KC_5   ,     KC_6   , KC_7   , KC_8   , KC_9   , KC_0   , _______,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+       KC_F7  , KC_F8  , KC_F9  , KC_F10 , KC_F11 , KC_F12 ,     _______, _______, KC_COMM, KC_DOT , KC_SLSH, _______,
+    //`--------+--------+--------+--------+--------+--------/   \--------+--------+--------+--------+--------+--------'
+                         RESET  , _______, _______, _______,     _______, _______, _______, _______
+    //                  `--------+--------+--------+--------'   `--------+--------+--------+--------'
+    ),
 };
-
-void matrix_init_user(void) {
-  //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
-  #ifdef SSD1306OLED
-    iota_gfx_init(!has_usb());   // turns on the display
-  #endif
-}
-
-//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
-#ifdef SSD1306OLED
-
-// When add source files to SRC in rules.mk, you can use functions.
-const char *read_layer_state(void);
-const char *read_logo(void);
-void set_keylog(uint16_t keycode, keyrecord_t *record);
-const char *read_keylog(void);
-const char *read_keylogs(void);
-
-// const char *read_mode_icon(bool swap);
-// const char *read_host_led_state(void);
-// void set_timelog(void);
-// const char *read_timelog(void);
-
-void matrix_scan_user(void) {
-  iota_gfx_task();
-}
-
-void matrix_render_user(struct CharacterMatrix *matrix) {
-  if (is_master) {
-    // If you want to change the display of OLED, you need to change here
-    matrix_write_ln(matrix, read_layer_state());
-    matrix_write_ln(matrix, read_keylog());
-    matrix_write_ln(matrix, read_keylogs());
-    //matrix_write_ln(matrix, read_mode_icon(keymap_config.swap_lalt_lgui));
-    //matrix_write_ln(matrix, read_host_led_state());
-    //matrix_write_ln(matrix, read_timelog());
-  } else {
-    matrix_write(matrix, read_logo());
-  }
-}
-
-void matrix_update(struct CharacterMatrix *dest, const struct CharacterMatrix *source) {
-  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
-    memcpy(dest->display, source->display, sizeof(dest->display));
-    dest->dirty = true;
-  }
-}
-
-void iota_gfx_task_user(void) {
-  struct CharacterMatrix matrix;
-  matrix_clear(&matrix);
-  matrix_render_user(&matrix);
-  matrix_update(&display, &matrix);
-}
-#endif//SSD1306OLED
-
-bool process_record_user(uint16_t keycode, keyrecord_t *record) {
-  if (record->event.pressed) {
-#ifdef SSD1306OLED
-    set_keylog(keycode, record);
-#endif
-    // set_timelog();
-  }
-
-  switch (keycode) {
-    case QWERTY:
-      if (record->event.pressed) {
-        set_single_persistent_default_layer(_QWERTY);
-      }
-      return false;
-      break;
-    case LOWER:
-      if (record->event.pressed) {
-        layer_on(_LOWER);
-      } else {
-        layer_off(_LOWER);
-      }
-      return false;
-      break;
-    case RAISE:
-      if (record->event.pressed) {
-        layer_on(_RAISE);
-      } else {
-        layer_off(_RAISE);
-      }
-      return false;
-      break;
-  }
-  return true;
-}
diff --git a/keyboards/claw44/keymaps/yfuku/config.h b/keyboards/claw44/keymaps/oled/config.h
index 244ffa7096..edde2c67ca 100644
--- a/keyboards/claw44/keymaps/yfuku/config.h
+++ b/keyboards/claw44/keymaps/oled/config.h
@@ -20,17 +20,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-//#define USE_MATRIX_I2C
-
-/* Select hand configuration */
-
 #define MASTER_LEFT
-// #define MASTER_RIGHT
-// #define EE_HANDS
-
-#define SSD1306OLED
-
-#define USE_SERIAL_PD2
-
-#define TAPPING_TERM 180
-#define IGNORE_MOD_TAP_INTERRUPT
+#define OLED_FONT_H "keyboards/claw44/lib/glcdfont.c"
diff --git a/keyboards/claw44/keymaps/oled/keymap.c b/keyboards/claw44/keymaps/oled/keymap.c
new file mode 100644
index 0000000000..0d10c371a2
--- /dev/null
+++ b/keyboards/claw44/keymaps/oled/keymap.c
@@ -0,0 +1,137 @@
+#include QMK_KEYBOARD_H
+#include <stdio.h>
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+
+enum layer_number {
+    _QWERTY = 0,
+    _RAISE,
+    _LOWER,
+};
+
+#define KC_ KC_TRNS
+#define KC_RST RESET
+#define KC_L_SPC LT(_LOWER, KC_SPC)  // lower
+#define KC_R_ENT LT(_RAISE, KC_ENT)  // raise
+#define KC_G_JA LGUI_T(KC_LANG1)     // cmd or win
+#define KC_G_EN LGUI_T(KC_LANG2)     // cmd or win
+#define KC_C_BS LCTL_T(KC_BSPC)      // ctrl
+#define KC_A_DEL ALT_T(KC_DEL)       // alt
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_QWERTY] = LAYOUT( \
+    //,--------+--------+---------+--------+---------+--------.   ,--------+---------+--------+---------+--------+--------.
+        KC_ESC , KC_Q   , KC_W    , KC_E   , KC_R    , KC_T   ,     KC_Y   , KC_U    , KC_I   , KC_O    , KC_P   , KC_MINS,
+    //|--------+--------+---------+--------+---------+--------|   |--------+---------+--------+---------+--------+--------|
+        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_LSFT, KC_Z   , KC_X    , KC_C   , KC_V    , KC_B   ,     KC_N   , KC_M    , KC_COMM, KC_DOT  , KC_SLSH, KC_RSFT,
+    //`--------+--------+---------+--------+---------+--------/   \--------+---------+--------+---------+--------+--------'
+                          KC_A_DEL, KC_G_EN, KC_L_SPC, KC_C_BS,     KC_C_BS, KC_R_ENT, KC_G_JA, KC_A_DEL
+    //                 `----------+--------+---------+--------'   `--------+---------+--------+---------'
+    ),
+
+    [_RAISE] = LAYOUT( \
+    //,--------+--------+--------+--------+--------+--------.   ,--------+--------+--------+--------+--------+--------.
+        _______, KC_BSLS, KC_CIRC, KC_EXLM, KC_AMPR, KC_PIPE,     KC_AT  , KC_EQL , KC_PLUS, KC_ASTR, KC_PERC, KC_MINS,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+        KC_LPRN, KC_HASH, KC_DLR , KC_DQT , KC_QUOT, KC_TILD,     KC_LEFT, KC_DOWN,  KC_UP , KC_RGHT, KC_GRV , KC_RPRN,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+        _______, _______, _______, _______, KC_LCBR, KC_LBRC,     KC_RBRC, KC_RCBR, _______, _______, _______, _______,
+    //`--------+--------+--------+--------+--------+--------/   \--------+--------+--------+--------+--------+--------'
+                          _______, _______, _______, _______,     _______, _______, _______, RESET
+    //                  `--------+--------+--------+--------'   `--------+--------+--------+--------'
+    ),
+
+    [_LOWER] = LAYOUT( \
+    //,--------+--------+--------+--------+--------+--------.   ,--------+--------+--------+--------+--------+--------.
+        KC_F1  , KC_F2  , KC_F3  , KC_F4  , KC_F5  , KC_F6  ,     _______, KC_EQL , KC_PLUS, KC_ASTR, KC_PERC, KC_MINS,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+        _______, KC_1   , KC_2   , KC_3   , KC_4   , KC_5   ,     KC_6   , KC_7   , KC_8   , KC_9   , KC_0   , _______,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+        KC_F7  , KC_F8  , KC_F9  , KC_F10 , KC_F11 , KC_F12 ,     _______, _______, KC_COMM, KC_DOT , KC_SLSH, _______,
+    //`--------+--------+--------+--------+--------+--------/   \--------+--------+--------+--------+--------+--------'
+                          RESET  , _______, _______, _______,     _______, _______, _______, _______
+    //                  `--------+--------+--------+--------'   `--------+--------+--------+--------'
+    ),
+};
+
+#ifdef OLED_DRIVER_ENABLE
+
+void render_layer_state(void) {
+    switch (get_highest_layer(layer_state)) {
+        case _QWERTY:
+            oled_write_ln_P(PSTR("Layer: Default"), false);
+            break;
+        case _RAISE:
+            oled_write_ln_P(PSTR("Layer: Raise"), false);
+            break;
+        case _LOWER:
+            oled_write_ln_P(PSTR("Layer: Lower"), false);
+            break;
+        default:
+            oled_write_ln_P(PSTR("Layer: Undefined"), false);
+    }
+}
+
+void render_logo(void) {
+    static const char PROGMEM logo[] = {0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0};
+    oled_write_P(logo, false);
+}
+
+char keylog_str[24]  = {};
+char keylogs_str[21] = {};
+int  keylogs_str_idx = 0;
+
+const char code_to_name[60] = {' ', ' ', ' ', ' ', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', 'R', 'E', 'B', 'T', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ';', '\'', ' ', ',', '.', '/', ' ', ' ', ' '};
+
+void set_keylog(uint16_t keycode, keyrecord_t *record) {
+    char name = ' ';
+    if (keycode < 60) {
+        name = code_to_name[keycode];
+    }
+
+    // update keylog
+    snprintf(keylog_str, sizeof(keylog_str), "%dx%d, k%2d : %c", record->event.key.row, record->event.key.col, keycode, name);
+
+    // update keylogs
+    if (keylogs_str_idx == sizeof(keylogs_str) - 1) {
+        keylogs_str_idx = 0;
+        for (int i = 0; i < sizeof(keylogs_str) - 1; i++) {
+            keylogs_str[i] = ' ';
+        }
+    }
+
+    keylogs_str[keylogs_str_idx] = name;
+    keylogs_str_idx++;
+}
+
+const char *read_keylog(void) { return keylog_str; }
+const char *read_keylogs(void) { return keylogs_str; }
+
+void oled_task_user(void) {
+    if (is_keyboard_master()) {
+        render_layer_state();
+        oled_write_ln(read_keylog(), false);
+        oled_write_ln(read_keylogs(), false);
+    } else {
+        render_logo();
+    }
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    if (record->event.pressed) {
+        set_keylog(keycode, record);
+    }
+    return true;
+}
+
+oled_rotation_t oled_init_user(oled_rotation_t rotation) {
+    if (!is_keyboard_master()) return OLED_ROTATION_180;
+    return rotation;
+}
+
+#endif
diff --git a/keyboards/claw44/keymaps/oled/rules.mk b/keyboards/claw44/keymaps/oled/rules.mk
new file mode 100644
index 0000000000..c582662134
--- /dev/null
+++ b/keyboards/claw44/keymaps/oled/rules.mk
@@ -0,0 +1 @@
+OLED_DRIVER_ENABLE = yes
diff --git a/keyboards/claw44/keymaps/yfuku/keymap.c b/keyboards/claw44/keymaps/yfuku/keymap.c
deleted file mode 100644
index 77d459b928..0000000000
--- a/keyboards/claw44/keymaps/yfuku/keymap.c
+++ /dev/null
@@ -1,221 +0,0 @@
-#include QMK_KEYBOARD_H
-#ifdef PROTOCOL_LUFA
-  #include "lufa.h"
-  #include "split_util.h"
-#endif
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
-
-extern keymap_config_t keymap_config;
-
-extern uint8_t is_master;
-
-// Each layer gets a name for readability, which is then used in the keymap matrix below.
-// The underscores don't mean anything - you can have a layer called STUFF or any other name.
-// Layer names don't all need to be of the same length, obviously, and you can also skip them
-// entirely and just use numbers.
-enum custom_keycodes {
-  QWERTY = SAFE_RANGE,
-  LOWER,
-  RAISE
-};
-
-enum macro_keycodes {
-  KC_SAMPLEMACRO,
-};
-
-// common
-#define KC_ KC_TRNS
-#define KC_XXXX KC_NO
-#define KC_RST RESET
-#define KC_VD KC__VOLDOWN
-#define KC_VU KC__VOLUP
-
-// layer
-#define KC_L_SPC LT(_LOWER, KC_SPC)
-#define KC_R_ENT LT(_RAISE, KC_ENT)
-
-// shift_t
-#define KC_S_TAB LSFT_T(KC_TAB)
-#define KC_S_ESC LSFT_T(KC_ESC)
-#define KC_S_JA LSFT_T(KC_LANG1)
-#define KC_S_EN LSFT_T(KC_LANG2)
-
-// cmd_t
-#define KC_M_F LCMD_T(KC_F)
-#define KC_M_D LCMD_T(KC_D)
-#define KC_M_J LCMD_T(KC_J)
-#define KC_M_K LCMD