ESP32-H2 GPIO26
Everything you need to use this pin correctly: status, alternate functions, boot-time cautions and working code.
| Status | Usable |
|---|---|
| Alternate functions | USB D− (USB Serial/JTAG) |
| Chip | ESP32-H2 pinout |
Watch out：
- Native USB pin. Using it as ordinary IO disables USB download and debugging.
Practical notes
USB D− (USB Serial/JTAG). The H2 places USB on 26/27 for direct USB flashing; using it as GPIO disables USB-JTAG.
Sample code
// Arduino
const int PIN = 26;
void setup() {
pinMode(PIN, OUTPUT);
}
void loop() {
digitalWrite(PIN, HIGH);
delay(500);
digitalWrite(PIN, LOW);
delay(500);
}
Data verified：2026-10-20 · Cross-checked against Espressif documentation. Always confirm against the official datasheet before finalizing a design. Official docs →