T-ETH Lite Quick Start

Required Libraries

Library	Version	Source
ETHClass2	Latest	GitHub

---

Arduino

PlatformIO (Recommended)

1. Install VS Code and the PlatformIO IDE extension
2. Clone the repository:

   git clone https://github.com/Xinyuan-LilyGO/LilyGO-T-ETH-Series.git

3. Open platformio.ini and uncomment the T-ETH-Lite environment
4. Click ✓ to build, connect via USB-C, click → to upload

---

Arduino IDE

1. Install ESP32 Board Support

1. Open Arduino IDE → File → Preferences
2. Add to "Additional Board Manager URLs":

   https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json

3. Go to Tools → Board → Boards Manager, search esp32, install esp32 by Espressif Systems

2. Board Settings

Setting	Value
Board	ESP32 Dev Module
Upload Speed	921600
CPU Frequency	240 MHz (WiFi/BT)
Flash Mode	QIO
Flash Size	16 MB (128Mb)
Partition Scheme	16M Flash (3MB APP/9.9MB FATFS)
PSRAM	Enable

3. Upload

Connect via USB-C and click Upload.

---

Peripheral Examples

Ethernet HTTP Client

#include <ETH.h>

void setup() {
    Serial.begin(115200);
    // Initialize Ethernet with RTL8201 PHY
    ETH.begin(0, -1, 23, 18, ETH_PHY_RTL8201, ETH_CLOCK_GPIO0_IN);
    while (!ETH.linkUp()) { delay(500); Serial.print("."); }
    Serial.println("\nEthernet connected: " + ETH.localIP().toString());
}

void loop() {}

---

FAQ

Q: Upload keeps failing?
A: Hold BOOT, press and release RST, then release BOOT to enter download mode.

Q: Ethernet not connecting?
A: Check that the ETH PHY pin definitions match your board version. Ensure PSRAM is enabled in board settings.