wokwi-ili9341 Reference
Full color 240x320 2.8" LCD-TFT display with SPI interface
Pin names
| # | Name | Description | Arduino Uno pin |
|---|---|---|---|
| 1 | VCC | Supply voltage | 5V |
| 2 | GND | Ground | GND |
| 3 | CS | Chip select | 10† |
| 4 | RST | Reset* | - |
| 5 | D/C | Data/command pin | 9† |
| 6 | MOSI | SPI data (MCU → LCD) | 11 |
| 7 | SCK | SPI clock | 13 |
| 8 | LED | Backlight LED* | 5V |
| 9 | MISO | SPI data (LCD → MCU)‡ | 12 |
* The RST and backlight (LED) pins are not available in the simulation.
† You connect CS and D/C to any digital Arduino pin. The pin numbers here are just an example.
‡ You can leave MISO disconnected, unless you need to read data back from the LCD.
Attributes
| Name | Description | Default value |
|---|---|---|
| flipHorizontal | Set to "1" to flip the display horizontally | "" |
| flipVertical | Set to "1" to flip the display vertically | "" |
Using in Arduino
You can use the Adafruit_ILI9341 library or the lcdgfx library to interface with the LCD display. The following code example shows basic usage with Adafruit_ILI9341. It works with the pin connections from the table above:
#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"
#define TFT_DC 9
#define TFT_CS 10
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
void setup() {
tft.begin();
tft.setCursor(26, 120);
tft.setTextColor(ILI9341_RED);
tft.setTextSize(3);
tft.println("Hello, TFT!");
tft.setCursor(20, 160);
tft.setTextColor(ILI9341_GREEN);
tft.setTextSize(2);
tft.println("I can has colors?");
}
void loop() { }