Project Fails to Upload to ESP32 on Platformio - Works on Arduino IDE

Development Platforms
4

What’s the purpose of the line:

board_buid.flash_mode = dout

Do you have a special board?

Things to try:

  • Remove the board_buid.flash_mode line
  • Ensure no serial monitor is open and blocking the connection
  • Lower the upload_speed to 9600 (you can increase it again later)