#include <Arduino_GFX_Library.h>
#include <Adafruit_ST7789.h>
#include <Wire.h>

#define TFT_DC   D7
#define TFT_RST  D9

Arduino_DataBus *bus = new Arduino_HWSPI(TFT_DC, -1);
Arduino_GFX *gfx = new Arduino_ST7789(bus, TFT_RST, 0, true, 240, 240, 0, 0);

void setup() {
  gfx->begin();

  gfx->fillScreen(ST77XX_GREEN);

  gfx->setTextColor(ST77XX_BLACK);

}

void loop() {
  // put your main code here, to run repeatedly:
  drawText(20, 10, 8, "HALLO"); delay(2000);
  drawText(20, 50, 8,  "WORLD");  delay(2000);
}

void drawText(int width, int hight,int size, const char* text) {
    gfx->setCursor(width, hight); 
    gfx->setTextSize(size);
    gfx->println(text);
}