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ESP32-P4 GPIO35

Everything you need to use this pin correctly: status, alternate functions, boot-time cautions and working code.

StatusUsable
Alternate functionsStrapping
ChipESP32-P4 pinout
Watch out:
  • Strapping pin: its level is latched at power-up to configure boot behaviour. Do not attach anything that changes its reset state.

Practical notes

Strapping pin (the P4 has five: GPIO34–38). Its level is latched at power-up to set the boot configuration, after which it behaves as normal GPIO. Ensure your external circuitry defines a definite level at reset.

Sample code

// Arduino
const int PIN = 35;

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 →

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