Hello everyone! So after some youtube suggestions from electronic gurus I have decided to try platformio for my ESP32S3 from seed xiao. Everything went smooth before I stumbled across Serial Monitor. It looks like platformio’s Serial Monitor cannot print anything inside setup part which is a bummer.…

Again: You are using the native built-in USB port of the ESP32-S3. This USB port gets disconnected and will reconnect when the ESP32-S3 resets. This takes some time! Using a sketch like this: #include <Arduino.h> void setup() { Serial.begin(115200); Serial.println("Hello World"); } void…

PlatformIO Community

Serial.print() in setup bug?

PlatformIO IDE

sivar2311 March 2, 2025, 12:09pm 2

Set

build_flags =
  -DARDUINO_USB_CDC_ON_BOOT=1

See ESP32-S3 native USB interface and Serial Monitor missing first messages - #10 by sivar2311

This board is using the natvie USB port of the ESP32-S3. The native USB gets disconnected and reconnects when the ESP32-S3 reboots.