3 files changed, 28 insertions, 24 deletions
diff --git a/keyboards/crkbd/keymaps/default/config.h b/keyboards/crkbd/keymaps/default/config.h
index 15aeb098b..8d25f7cbc 100644
--- a/keyboards/crkbd/keymaps/default/config.h
+++ b/keyboards/crkbd/keymaps/default/config.h
@@ -18,10 +18,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
-
-#include "../../config.h"
+#pragma once
 
 /* Use I2C or Serial */
 
@@ -50,4 +47,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLIGHT_HUE_STEP 10
 #define RGBLIGHT_SAT_STEP 17
 #define RGBLIGHT_VAL_STEP 17
-#endif
diff --git a/keyboards/crkbd/keymaps/default/keymap.c b/keyboards/crkbd/keymaps/default/keymap.c
index ac3b7215c..87661d345 100644
--- a/keyboards/crkbd/keymaps/default/keymap.c
+++ b/keyboards/crkbd/keymaps/default/keymap.c
@@ -1,24 +1,14 @@
-#include "crkbd.h"
+#include QMK_KEYBOARD_H
 #include "bootloader.h"
-#include "action_layer.h"
-#include "action_util.h"
-#include "eeconfig.h"
 #ifdef PROTOCOL_LUFA
-#include "lufa.h"
-#include "split_util.h"
+  #include "lufa.h"
+  #include "split_util.h"
 #endif
-#include "LUFA/Drivers/Peripheral/TWI.h"
 #ifdef SSD1306OLED
+  #include "LUFA/Drivers/Peripheral/TWI.h"
   #include "ssd1306.h"
 #endif
 
-#include "../lib/mode_icon_reader.c"
-#include "../lib/layer_state_reader.c"
-#include "../lib/host_led_state_reader.c"
-#include "../lib/logo_reader.c"
-#include "../lib/keylogger.c"
-#include "../lib/timelogger.c"
-
 extern keymap_config_t keymap_config;
 
 #ifdef RGBLIGHT_ENABLE
@@ -148,12 +138,25 @@ void matrix_init_user(void) {
 //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());
@@ -182,7 +185,7 @@ void iota_gfx_task_user(void) {
 bool process_record_user(uint16_t keycode, keyrecord_t *record) {
   if (record->event.pressed) {
     set_keylog(keycode, record);
-    set_timelog();
+    // set_timelog();
   }
 
   switch (keycode) {
diff --git a/keyboards/crkbd/keymaps/default/rules.mk b/keyboards/crkbd/keymaps/default/rules.mk
index 33ddd82a4..6570e2f5c 100644
--- a/keyboards/crkbd/keymaps/default/rules.mk
+++ b/keyboards/crkbd/keymaps/default/rules.mk
@@ -15,11 +15,16 @@ AUDIO_ENABLE = no           # Audio output on port C6
 UNICODE_ENABLE = no         # Unicode
 BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
 RGBLIGHT_ENABLE = yes        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
-ONEHAND_ENABLE = no        # Enable one-hand typing
+SWAP_HANDS_ENABLE = no        # Enable one-hand typing
 
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
 SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 
-ifndef QUANTUM_DIR
-	include ../../../../Makefile
-endif
+# If you want to change the display of OLED, you need to change here
+SRC +=  ../lib/rgb_state_reader.c \
+        ../lib/layer_state_reader.c \
+        ../lib/logo_reader.c \
+        ../lib/keylogger.c \
+        # ../lib/mode_icon_reader.c \
+        # ../lib/host_led_state_reader.c \
+        # ../lib/timelogger.c \