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--- latinet:ull:problems:start [2023/10/25 14:48] – created rolf.becker
+++ latinet:ull:problems:start [2023/10/25 14:59] (current) – [Problems with the Arduino installation on Linux] rolf.becker
@@ Line 1: / Line 1: @@
+~~NOTOC~~
+===== Problems with the Arduino installation on Linux ======
-===== Problems with the Arduino installation on LInux ======
+We downloaded the zip archive of IDE version 2.2.1 (Oct. 2023) and encountered the followig problems:
 === esptool cannot find pyserial ====
@@ Line 8: / Line 10: @@
 Workaround:
+<code>
 sudo apt install pip3
 pip3 install pyserial
+</code>
 Try to upload the code from the Arduino IDE to the esp32. It will call esptool in the background. It should work now.
@@ Line 15: / Line 20: @@
 ==== ttyUSBx device is not avaliable ====
-The reason is that the CH340 usb-to-serial driver collides with the preinstalled Braille interface driver brltty.
+The reason is that the CH340 usb-to-serial driver collides with the preinstalled **Braille** interface driver **brltty**.
 You can check this driver registration problem with
+<code>
 sudo dmesg -w
-Plug in and unplug the board. You will see that the usb-to-serial driver is unloaded in the end.
+</code>
+**Plug in the board** and observe the dmesg output. You will see that the usb-to-serial driver is unloaded in the end. This is the problem. The driver, i.e. the serial communication device, is finally not available.
 Workaround:
-Several. If you do not need a Braille interface the easiest would be to deinstall the full driver support by
+If you do not need a Braille interface the easiest would be to deinstall the full driver support by
+**Remove the brltty driver:**
+<code>
 sudo apt remove brltty
+</code>
+** Alternative: deactivate.**
+<code>
+systemctl stop brltty-udev.service
+sudo systemctl mask brltty-udev.service
+systemctl stop brltty.service
+systemctl disable brltty.service
+</code>
 ==== The Linux user is not allowed to use the ttyUSBx interface ====
 Solution:
 Add the resepective Linux user to the user group dialout:
-sudo usermod -g ...
+<code>
+sudo  usermod -a -G dialout <username>
+</code>
+Log out completely and log in again. A restart is not necessary. The Arduino IDE running under user id <username> should now have access to the ttyUSBx interface.