Serial console is not working with Colibri iMX6DL on Iris carrier board

Technical Support
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1

I’m using the Iris carrier board and Colibri iMX6DualLite module. After the board is powered on, I get garbage data in the minicom console.

Command used to launch the minicom: minicom -D /dev/ttyUSB0 -b 115200

dmesg output when connecting the Serial2USB module:

[674670.591840] usb 1-2: new full-speed USB device number 9 using xhci_hcd
[674670.741164] usb 1-2: New USB device found, idVendor=067b, idProduct=2303
[674670.741175] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[674670.741180] usb 1-2: Product: USB-Serial Controller D
[674670.741184] usb 1-2: Manufacturer: Prolific Technology Inc. 
[674670.742210] pl2303 1-2:1.0: pl2303 converter detected
[674670.745929] usb 1-2: pl2303 converter now attached to ttyUSB0

Serial output

�/5'�y!'-;�-eO忓������ey����sYgAYwoy�����sYgAYwoy�������ey����sYgAYwoy�����sYgAYwoy�������ey����sYgAYwoy�����sYgAYwoy�������ey����sYgAYwoy�����sYgAYwoy�������ey����sYgAYwoy�����sYgAYwoy�������ey����sYgA;[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;204H[9;
2

Hello @murad,

Greetings and Thank you for writing to Toradex Community.

These kinda characters usually suggest that something might be wrong with the connection. There are a couple of things we could try:

  • Firstly, could you connect the module to the monitor and make sure the module is booting, so that we could rule out any booting issues.
  • Could you please kindly re-check your connection with what’s described here:
    Unboxing and Setup Cables - Iris Carrier Board
  • Could you also kindly check if the configuration is set for 115200 baud, 8 data bits, no party, 1 stop bit and no handshaking?

Best Regards,
Janani