First init.

libraries/Adafruit_ST7735_and_ST7789_Library/Adafruit_ST7789.h

@@ -0,0 +1,28 @@
+#ifndef _ADAFRUIT_ST7789H_
+#define _ADAFRUIT_ST7789H_
+
+#include "Adafruit_ST77xx.h"
+
+/// Subclass of ST77XX type display for ST7789 TFT Driver
+class Adafruit_ST7789 : public Adafruit_ST77xx {
+public:
+  Adafruit_ST7789(int8_t cs, int8_t dc, int8_t mosi, int8_t sclk,
+                  int8_t rst = -1);
+  Adafruit_ST7789(int8_t cs, int8_t dc, int8_t rst);
+#if !defined(ESP8266)
+  Adafruit_ST7789(SPIClass *spiClass, int8_t cs, int8_t dc, int8_t rst);
+#endif // end !ESP8266
+
+  void setRotation(uint8_t m);
+  void init(uint16_t width, uint16_t height, uint8_t spiMode = SPI_MODE0);
+
+protected:
+  uint8_t _colstart2 = 0, ///< Offset from the right
+      _rowstart2 = 0;     ///< Offset from the bottom
+
+private:
+  uint16_t windowWidth;
+  uint16_t windowHeight;
+};
+
+#endif // _ADAFRUIT_ST7789H_