Can't upload program from Arduino IDE to ESP32 Board (Adafruit ESP-WROOM-32, Ubuntu)

[kevineverson]

Hello, I am trying to program my ESP-WROOM-32 board using the Arduino IDE. I followed the steps to install the core on Ubuntu, so the ESP32 boards show up under "Tools/Board:" in Arduino. I was able to confirm the correct serial port as /dev/ttyUSB0 on my computer using the terminal window, and it shows up under "Tools/Port:" when the board is plugged in.

However, when I try to upload a simple program to the board, it says "Could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'"

Has anyone else encountered this issue, and does anyone know of a fix? Thanks!

[kgnete]

Try

sudo chown <username> /dev/ttyUSB0

[ESP_Sprite]

Or to fix the issue permanently, for all ports: sudo adduser <username> dialout, log out and log in again.

[loboris]

You can also add new udev rule in /etc/udev/rules.d. Here is the content my 98-esp32.rules for various esp32 boards I'm using:

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ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6015", MODE="0666", ENV{ID_MM_DEVICE_IGNORE}="1"
ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6010", MODE="0666", ENV{ID_MM_DEVICE_IGNORE}="1"
ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", MODE="0666", ENV{ID_MM_DEVICE_IGNORE}="1"
ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", MODE="0666", ENV{ID_MM_DEVICE_IGNORE}="1"

Add idVendor&idProduct of your usb to serial adapter.
New rules will be activated after reboot or you can execute:

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sudo udevadm control --reload-rules && udevadm trigger

You can also change your port 'name' by adding SYMLINK="ttyESP32", you can choose any name you want.