To make the SPI display compatible to the usual Arduino ESP libraries, it is connected like this:

D2, D3 and D4 are defined in the software and can be changed.

Board manager URL: http://arduino.esp8266.com/stable/package_esp8266com_index.json\ Board: NodeMCU 1.0 (ESP-12E Module)

to install:

• Adafruit graphics library
• Adafruit ILI9341 TFT library

include:

#include "Adafruit_GFX.h" // include Adafruit graphics library
#include "Adafruit_ILI9341.h" // include Adafruit ILI9341 TFT library

initialization:

#define TFT_CS D2
#define TFT_RST D3
#define TFT_DC D4
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

Start:

tft.begin();
tft.setRotation(3);
tft.fillScreen(ILI9341_BLACK);
printText(0,0, "Test Text");