esp32-p4-hydra-gpio-blink.ino
Minimalist example to test digital output and basic timing on the board.
Use the Arduino IDE with ESP32-P4 support installed. Select 'Adafruit Metro ESP32-P4 Hydra' in the Board Manager. Compile and upload via the USB-C port. Open the Serial Monitor at 115200 bauds to see startup messages.
esp32-p4-hydra-gpio-blink.ino
#include <Arduino.h>
// La LED intégrée sur la Metro ESP32-P4 Hydra est généralement sur GPIO 2 ou 3.
// Vérifier le schéma exact, mais GPIO 2 est un standard courant sur les ESP32.
#define LED_PIN 2
void setup() {
Serial.begin(115200);
pinMode(LED_PIN, OUTPUT);
Serial.println("Metro ESP32-P4 Hydra - Blink Test");
}
void loop() {
digitalWrite(LED_PIN, HIGH);
delay(1000);
digitalWrite(LED_PIN, LOW);
delay(1000);
}