T-ETH 1302 Quick Start

Required Libraries

Library	Version	Source
ETHClass2	Latest	GitHub
RadioLib	Latest	GitHub

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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-1302 environment
4. Click ✓ to build, connect via USB-C, click → to upload

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Arduino IDE

Board Settings

Setting	Value
Board	ESP32S3 Dev Module
Upload Speed	921600
USB CDC On Boot	Enable
CPU Frequency	240 MHz (WiFi)
Flash Size	16 MB (128Mb)
Partition Scheme	16M Flash (3MB APP/9.9MB FATFS)
PSRAM	OPI PSRAM

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Peripheral Examples

Ethernet (ETHClass2)

#include <ETHClass2.h>

#define ETH_PHY_TYPE  ETH_PHY_W5500
#define ETH_PHY_ADDR  1
#define ETH_PHY_CS    9
#define ETH_PHY_IRQ   21
#define ETH_PHY_RST   14
#define ETH_PHY_SPI   SPI
#define ETH_PHY_SCK   12
#define ETH_PHY_MISO  13
#define ETH_PHY_MOSI  11

ETHClass2 ETH2(ETH_PHY_TYPE, ETH_PHY_ADDR, ETH_PHY_CS, ETH_PHY_IRQ,
               ETH_PHY_RST, ETH_PHY_SPI, ETH_PHY_SCK, ETH_PHY_MISO, ETH_PHY_MOSI);

void onEthEvent(arduino_event_id_t event) {
  if (event == ARDUINO_EVENT_ETH_GOT_IP) {
    Serial.print("IP: "); Serial.println(ETH2.localIP());
  }
}

void setup() {
  Serial.begin(115200);
  WiFi.onEvent(onEthEvent);
  ETH2.begin();
}

void loop() { delay(1000); }

LoRa (SX1262)

#include <RadioLib.h>

// SX1262 pins — check T-ETH-1302 schematic
SX1262 radio = new Module(10, 3, 8, 2);

void setup() {
  Serial.begin(115200);
  int state = radio.begin(915.0);
  if (state != RADIOLIB_ERR_NONE) {
    Serial.print("Radio init failed: "); Serial.println(state);
    while (true);
  }
  Serial.println("SX1262 ready");
}

void loop() {
  int state = radio.transmit("Hello T-ETH-1302");
  if (state == RADIOLIB_ERR_NONE) Serial.println("Sent OK");
  delay(2000);
}

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FAQ

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