ESP32LCD8.h support old and new version in parallel

Author: mathertel

src/databus/Arduino_ESP32LCD8.h

@@ -2,8 +2,87 @@
 
 #include "Arduino_DataBus.h"
 
-#if 1 || defined(ESP32) && (CONFIG_IDF_TARGET_ESP32S3)
-#if 1 || (!defined(ESP_ARDUINO_VERSION_MAJOR)) || (ESP_ARDUINO_VERSION_MAJOR >= 5)
+#if defined(ESP32) && (CONFIG_IDF_TARGET_ESP32S3)
+#if (!defined(ESP_ARDUINO_VERSION_MAJOR)) || (ESP_ARDUINO_VERSION_MAJOR < 3)
+
+#ifndef LCD_MAX_PIXELS_AT_ONCE
+#define LCD_MAX_PIXELS_AT_ONCE 2046
+#endif
+#ifndef USE_DMA_THRESHOLD
+#define USE_DMA_THRESHOLD 6
+#endif
+
+class Arduino_ESP32LCD8 : public Arduino_DataBus
+{
+public:
+  Arduino_ESP32LCD8(
+      int8_t dc, int8_t cs, int8_t wr, int8_t rd,
+      int8_t d0, int8_t d1, int8_t d2, int8_t d3, int8_t d4, int8_t d5, int8_t d6, int8_t d7); // Constructor
+
+  bool begin(int32_t speed = GFX_NOT_DEFINED, int8_t dataMode = GFX_NOT_DEFINED) override;
+  void beginWrite() override;
+  void endWrite() override;
+  void writeCommand(uint8_t) override;
+  void writeCommand16(uint16_t) override;
+  void writeCommandBytes(uint8_t *data, uint32_t len) override;
+  void write(uint8_t) override;
+  void write16(uint16_t) override;
+
+  void writeC8D8(uint8_t c, uint8_t d) override;
+  void writeC8D16(uint8_t c, uint16_t d) override;
+  void writeC8D16D16(uint8_t c, uint16_t d1, uint16_t d2) override;
+  void writeC8D16D16Split(uint8_t c, uint16_t d1, uint16_t d2) override;
+
+  void writeRepeat(uint16_t p, uint32_t len) override;
+  void writePixels(uint16_t *data, uint32_t len) override;
+
+  void writeBytes(uint8_t *data, uint32_t len) override;
+
+  void writeIndexedPixels(uint8_t *data, uint16_t *idx, uint32_t len) override;
+  void writeIndexedPixelsDouble(uint8_t *data, uint16_t *idx, uint32_t len) override;
+
+protected:
+private:
+  GFX_INLINE void CS_HIGH(void);
+  GFX_INLINE void CS_LOW(void);
+
+  int8_t _dc, _cs, _wr, _rd;
+  int8_t _d0, _d1, _d2, _d3, _d4, _d5, _d6, _d7;
+
+  PORTreg_t _csPortSet; ///< PORT register for chip select SET
+  PORTreg_t _csPortClr; ///< PORT register for chip select CLEAR
+  uint32_t _csPinMask;  ///< Bitmask for chip select
+
+  esp_lcd_i80_bus_handle_t _i80_bus = nullptr;
+  dma_descriptor_t *_dmadesc = nullptr;
+  gdma_channel_handle_t _dma_chan;
+
+  union
+  {
+    uint32_t value;
+    struct
+    {
+      uint16_t value16;
+      uint16_t value16_2;
+    };
+    struct
+    {
+      uint8_t lsb;
+      uint8_t msb;
+      uint8_t lsb_2;
+      uint8_t msb_2;
+    };
+  } _data32;
+
+  union
+  {
+    uint8_t* _buffer;
+    uint16_t* _buffer16;
+    uint32_t* _buffer32;
+  };
+};
+
+#else // (ESP_ARDUINO_VERSION_MAJOR >= 3)
 
 #include "esp_lcd_panel_interface.h"
 #include "esp_lcd_panel_io.h"
@@ -92,5 +171,6 @@ class Arduino_ESP32LCD8 : public Arduino_DataBus
   };
 };
 
-#endif // #if (!defined(ESP_ARDUINO_VERSION_MAJOR)) || (ESP_ARDUINO_VERSION_MAJOR < 3)
+#endif // #if ... ESP_ARDUINO_VERSION_MAJOR
+
 #endif // #if defined(ESP32) && (CONFIG_IDF_TARGET_ESP32S3)