diff --git a/include/epd-spi/panel/lcd_zjy350c4001.h b/include/epd-spi/panel/lcd_zjy350c4001.h
index 09b9585..bbb0ab1 100644
--- a/include/epd-spi/panel/lcd_zjy350c4001.h
+++ b/include/epd-spi/panel/lcd_zjy350c4001.h
@@ -31,8 +31,7 @@ typedef struct {
 } lcd_zjy350c4001_t;
 
 epd_ret_t lcd_zjy350c4001_init(lcd_zjy350c4001_t *lcd);
-epd_ret_t lcd_zjy350c4001_upload(lcd_zjy350c4001_t *lcd, uint8_t *data, uint16_t x_start, uint16_t x_end,
-                                  uint16_t y_start, uint16_t y_end);
+epd_ret_t lcd_zjy350c4001_upload(lcd_zjy350c4001_t *lcd, uint8_t *data, epd_coord_t *coord);
 epd_ret_t lcd_zjy350c4001_sleep(lcd_zjy350c4001_t *lcd, uint8_t sleep_mode);
 epd_ret_t lcd_zjy350c4001_display(lcd_zjy350c4001_t *lcd, uint8_t display_on);
 epd_ret_t lcd_zjy350c4001_config(lcd_zjy350c4001_t *lcd, LCD_ZJY350C4001_config_t *config);
diff --git a/src/panel/lcd_zjy350c4001.c b/src/panel/lcd_zjy350c4001.c
index b390d66..47fe2bf 100644
--- a/src/panel/lcd_zjy350c4001.c
+++ b/src/panel/lcd_zjy350c4001.c
@@ -4,7 +4,7 @@
 
 #include "epd_private.h"
 
-static uint8_t LCD_ZJY350C4001_init_seq_zjy_480_320[] = {
+static uint8_t lcd_zjy350c4001_init_seq_zjy_480_320[] = {
     0x01, 0xF0, 0xC3,                                            // Enable command part 1
     0x01, 0xF0, 0x96,                                            // Enable command part 2
     0x08, 0xE8, 0x40, 0x82, 0x07, 0x18, 0x27, 0x0A, 0xB6, 0x33,  // DOCA
@@ -16,21 +16,7 @@ static uint8_t LCD_ZJY350C4001_init_seq_zjy_480_320[] = {
     0x01, 0xF0, 0x69,  // Disable command part 2
 };
 
-epd_ret_t _LCD_ZJY350C4001_init_seq(lcd_zjy350c4001_t *lcd) {
-    uint16_t i = 0;
-
-    while (i < sizeof(LCD_ZJY350C4001_init_seq_zjy_480_320)) {
-        if (lcd->cb.write_command_cb(lcd->user_data, &LCD_ZJY350C4001_init_seq_zjy_480_320[i + 1],
-                                     LCD_ZJY350C4001_init_seq_zjy_480_320[i] + 1) != EPD_OK) {
-            return EPD_FAIL;
-        };
-        i += LCD_ZJY350C4001_init_seq_zjy_480_320[i] + 2;
-    }
-
-    return EPD_OK;
-}
-
-epd_ret_t _LCD_ZJY350C4001_window(lcd_zjy350c4001_t *lcd, uint16_t x_start, uint16_t x_end, uint16_t y_start, uint16_t y_end) {
+epd_ret_t lcd_zjy350c4001_window(lcd_zjy350c4001_t *lcd, epd_coord_t *coord) {
     uint16_t real_x_start, real_x_end, real_y_start, real_y_end;
 
     uint16_t x_offset, y_offset;
@@ -56,10 +42,10 @@ epd_ret_t _LCD_ZJY350C4001_window(lcd_zjy350c4001_t *lcd, uint16_t x_start, uint
             y_offset = 0;
     }
 
-    real_x_start      = x_start + x_offset;
-    real_x_end        = x_end + x_offset;
-    real_y_start      = y_start + y_offset;
-    real_y_end        = y_end + y_offset;
+    real_x_start      = coord->x_start + x_offset;
+    real_x_end        = coord->x_end + x_offset;
+    real_y_start      = coord->y_start + y_offset;
+    real_y_end        = coord->y_end + y_offset;
 
     uint8_t tx_buf[5] = {0x2A, ((uint8_t)(real_x_start >> 0x08U) & 0xFFU), (real_x_start & 0xFFU),
                          ((uint8_t)(real_x_end >> 0x08U) & 0xFFU), (real_x_end & 0xFFU)};
@@ -81,11 +67,11 @@ epd_ret_t _LCD_ZJY350C4001_window(lcd_zjy350c4001_t *lcd, uint16_t x_start, uint
     return EPD_OK;
 }
 
-epd_ret_t _LCD_ZJY350C4001_reset(lcd_zjy350c4001_t *lcd) { return lcd->cb.reset_cb(lcd->user_data); }
+epd_ret_t lcd_zjy350c4001_reset(lcd_zjy350c4001_t *lcd) { return lcd->cb.reset_cb(lcd->user_data); }
 
 epd_ret_t lcd_zjy350c4001_init(lcd_zjy350c4001_t *lcd) {
-    if (_LCD_ZJY350C4001_reset(lcd) != EPD_OK) return EPD_FAIL;
-    if (_LCD_ZJY350C4001_init_seq(lcd) != EPD_OK) return EPD_FAIL;
+    if (lcd_zjy350c4001_reset(lcd) != EPD_OK) return EPD_FAIL;
+    if(epd_common_execute_sequence(&lcd->cb, lcd->user_data, lcd_zjy350c4001_init_seq_zjy_480_320, sizeof(lcd_zjy350c4001_init_seq_zjy_480_320)) != EPD_OK) return EPD_FAIL;
     if (lcd_zjy350c4001_config(lcd, &lcd->config) != EPD_OK) return EPD_FAIL;
     if (lcd_zjy350c4001_sleep(lcd, 0) != EPD_OK) return EPD_FAIL;
     if (lcd_zjy350c4001_display(lcd, 1) != EPD_OK) return EPD_FAIL;
@@ -93,9 +79,8 @@ epd_ret_t lcd_zjy350c4001_init(lcd_zjy350c4001_t *lcd) {
     return EPD_OK;
 }
 
-epd_ret_t lcd_zjy350c4001_upload(lcd_zjy350c4001_t *lcd, uint8_t *data, uint16_t x_start, uint16_t x_end,
-                               uint16_t y_start, uint16_t y_end) {
-    uint32_t pixel_count = (y_end - y_start + 1) * (x_end - x_start + 1);
+epd_ret_t lcd_zjy350c4001_upload(lcd_zjy350c4001_t *lcd, uint8_t *data, epd_coord_t *coord) {
+    uint32_t pixel_count = (coord->y_end - coord->y_start + 1) * (coord->x_end - coord->x_start + 1);
 
     uint32_t data_len    = 0;
 
@@ -116,7 +101,7 @@ epd_ret_t lcd_zjy350c4001_upload(lcd_zjy350c4001_t *lcd, uint8_t *data, uint16_t
     }
 
     // Set cursor
-    if (_LCD_ZJY350C4001_window(lcd, x_start, x_end, y_start, y_end) != EPD_OK) {
+    if (lcd_zjy350c4001_window(lcd, coord) != EPD_OK) {
         return EPD_FAIL;
     }