new class

Author: inib

Marlin/Configuration.h

@@ -2084,6 +2084,13 @@
 
 //@
 #define FSMC_GRAPHICAL_TFT
+#if ENABLED(FSMC_GRAPHICAL_TFT)
+  //
+  // FSMC_UPSCALE 2 2x upscaler for 320x240 displays (default)
+  // FSMC_UPSCALE 3 3x upscaler for 480x320 displays
+  //
+  #define FSMC_UPSCALE 2
+#endif
 
 //=============================================================================
 //============================  Other Controllers  ============================

Marlin/src/lcd/dogm/HAL_LCD_class_defines.h

@@ -95,6 +95,18 @@ class U8GLIB_TFT_320X240_UPSCALE_FROM_128X64 : public U8GLIB {
   { }
 };
 
+//
+// Very basic support for 480x320 TFT screen
+//
+extern u8g_dev_t u8g_dev_tft_480x320_upscale_from_128x64;
+
+class U8GLIB_TFT_480X320_UPSCALE_FROM_128X64 : public U8GLIB {
+public:
+  U8GLIB_TFT_480X320_UPSCALE_FROM_128X64(uint8_t cs, uint8_t rs, uint8_t reset = U8G_PIN_NONE)
+  : U8GLIB(&u8g_dev_tft_480x320_upscale_from_128x64, cs, rs, reset)
+  { }
+};
+
 
 extern u8g_dev_t u8g_dev_uc1701_mini12864_HAL_2x_sw_spi, u8g_dev_uc1701_mini12864_HAL_2x_hw_spi;
 

Marlin/src/lcd/dogm/u8g_dev_tft_320x240_upscale_from_128x64.cpp

@@ -471,7 +471,7 @@ static const uint8_t ili9341_init_sequence[] = { // 0x9341 - ILI9341
   // *check for button sizes and how to upscale to fit on screen
   // *check if other parts of marlin use drawImage
 
-  void drawImage(const uint8_t *data, u8g_t *u8g, u8g_dev_t *dev, uint16_t length, uint16_t height, uint16_t color) {
+  static void drawImage(const uint8_t *data, u8g_t *u8g, u8g_dev_t *dev, uint16_t length, uint16_t height, uint16_t color) {
     static uint16_t p_buffer[288];
     uint16_t* buffer = &p_buffer[0];