diff --git a/st7789_lcd.c b/st7789_lcd.c
index 1998aea..094da06 100644
--- a/st7789_lcd.c
+++ b/st7789_lcd.c
@@ -86,12 +86,12 @@ st7789_ret_t _st7789_window(st7789_lcd_t *lcd, uint16_t x_start, uint16_t x_end,
         y_offset = PANEL_X_OFFSET;
         break;
     case ST7789_DIR_180:
-        x_offset = 0;
-        y_offset = 80;
+        x_offset = 240 - (PANEL_X_OFFSET + PANEL_X_WIDTH);
+        y_offset = 320 - (PANEL_Y_OFFSET + PANEL_Y_WIDTH);
         break;
     case ST7789_DIR_270:
-        x_offset = 80;
-        y_offset = 0;
+        x_offset = 320 - (PANEL_Y_OFFSET + PANEL_Y_WIDTH);
+        y_offset = 240 - (PANEL_X_OFFSET + PANEL_X_WIDTH);
         break;
     default:
         x_offset = 0;
@@ -130,6 +130,7 @@ st7789_ret_t _st7789_reset(st7789_lcd_t *lcd) {
 }
 
 st7789_ret_t st7789_lcd_init(st7789_lcd_t *lcd) {
+    if(_st7789_reset(lcd) != ST7789_OK) return ST7789_ERROR;
     if(_st7789_init_seq(lcd) != ST7789_OK) return ST7789_ERROR;
     if(st7789_lcd_config(lcd, &lcd->config) != ST7789_OK) return ST7789_ERROR;
     if(st7789_lcd_sleep(lcd, 0) != ST7789_OK) return ST7789_ERROR;
@@ -164,6 +165,11 @@ st7789_ret_t st7789_lcd_load(st7789_lcd_t *lcd, uint8_t *data, uint16_t x_start,
         return ST7789_ERROR;
     }
 
+    uint8_t command = 0x2C; // Memory Write
+    if(lcd->cb.write_cmd_cb(lcd->user_data, &command, 0x01) != ST7789_OK) {
+        return ST7789_ERROR;
+    }
+
     // Write pixel data
     if(lcd->cb.write_data_cb(lcd->user_data, data, data_len) != ST7789_OK) {
         return ST7789_ERROR;
diff --git a/st7789_lcd.h b/st7789_lcd.h
index 819fbb0..293b058 100644
--- a/st7789_lcd.h
+++ b/st7789_lcd.h
@@ -44,18 +44,24 @@ typedef struct {
 #ifdef ST7789_PANEL_ZJY_240
 
 #define ST7789_PANEL_SELECTION st7789_init_seq_zjy_240_240
+#define PANEL_X_WIDTH  240
+#define PANEL_Y_WIDTH  240
 #define PANEL_X_OFFSET 0
 #define PANEL_Y_OFFSET 0
 
 #elif ST7789_PANEL_ZJY_135
 
 #define ST7789_PANEL_SELECTION st7789_init_seq_zjy_240_135
+#define PANEL_X_WIDTH  240
+#define PANEL_Y_WIDTH  135
 #define PANEL_X_OFFSET 53
 #define PANEL_Y_OFFSET 40
 
 #elif ST7789_PANEL_ZJY_320
 
 #define ST7789_PANEL_SELECTION st7789_init_seq_zjy_320_240
+#define PANEL_X_WIDTH  240
+#define PANEL_Y_WIDTH  320
 #define PANEL_X_OFFSET 0
 #define PANEL_Y_OFFSET 0
 
@@ -63,6 +69,8 @@ typedef struct {
 
 #warning "Panel not defined, using default."
 #define ST7789_PANEL_SELECTION st7789_init_seq_zjy_240_240
+#define PANEL_X_WIDTH  240
+#define PANEL_Y_WIDTH  240
 #define PANEL_X_OFFSET 0
 #define PANEL_Y_OFFSET 0