UDOO usb debug

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Udoo features a built in USB to serial interface which is very useful for various reasons: You can use it to connect Udoo via SSH without a network connection, programming the Sam3x (arduino) and access the debug console for troubleshooting purposes.

Connecting via serial will practically result in a shell console, the same as the one you’ll obtain through SSH connection.

Note: Be sure the jumper J18(the one near the UDOO reset button) is plugged to access to the debug console.


  • Download the serial adapter Driver here
  • Install the proper version for your Operating system:
    • CP210xVCPInstaller_x86.exe for 32-bit systems
    • CP210xVCPInstaller_x64.exe for 64-bit system
  • Download and install Putty
  • Open putty and configure it as follows:
    • Connection type “serial”
    • Port: “COM3” (please note that this value may be different)
    • Speed: “115200”
    • Save it as “Udoo-serial” for future uses.
  • Connect the serial port of UDOO (CN6) to your PC using the micro USB cable.
  • Power up UDOO
  • Click Open
  • Done!
  • You’re in! You’ll be able to see the startup process and access to the remote shell console on UDOO.


  • Connect the serial port of UDOO (CN6) to your PC using the micro USB cable.
  • Type
  • You should see this line at the end
usb 2-2.1: cp21x converter now attached to tty
  • Install minicom:
sudo apt-get update
sudo apt-get install minicom
  • Open Minicom and configure it (only the first time) using the following command:
sudo minicom -sw
  • Go to “Serial port setup” and edit as follow:
Serial Device: /dev/ttyUSB0 (type a key)
Hardware Flow Control: No (type f key)
Software Flow Control: No (type g key)
  • Press exit and “Save setup as dfl”
  • Exit from Minicom
  • Let’s give proper access permissions to serial port with:
sudo chmod 666 /dev/ttyUSB0
  • Now we can start listening with:
sudo minicom -w
  • Power cycle UDOO to see the boot process and connect it to serial console shell

Mac OS X

  • Download the serial adapter Driver here
  • Connect the serial port of UDOO (CN6) to your PC using the micro USB cable.
  • Download and install Serial Tools (available also at apple store)
  • Open Serial Tools, and change the following parameters:
Serial Port: “SLEB_USBtoUART”
Baud rate “115200”
  • Hit connect, and here you go!