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Difference between revisions of "Rock/Serial debug tools Setting"

(Linux)
(Linux: Use picocom for UART/Serial console)
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===Linux===
 
===Linux===
Here we still use putty as an example.
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when start putty firstly  you will see this interface:
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For connecting UART/Serial console on Linux, the [https://code.google.com/p/picocom/ picocom] utility is very handy to use in a Terminal session. You can also use [http://www.chiark.greenend.org.uk/~sgtatham/putty/ PuTTY] for this purpose.
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==== picocom ====
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If you are using Ubuntu, you need to add the current user into group ''dialout'', then close your session and relogin to make changes effective immediately:
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  sudo adduser $USER dialout
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  gnome-session-quit
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Install picocom:
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  sudo apt-get install picocom
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Open connection to serial line, using 115200 bauds:
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  picocom /dev/ttyUSB0 -b 115200 -e w
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Note: Escape character is set to 'w', you have to press Ctrl-w Ctrl-x to quit.
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 +
==== PuTTY ====
 +
Here we still use PuTTY as an example.
 +
when start PuTTY firstly  you will see this interface:
  
 
[[File:serial_debug_linux_0.png]]
 
[[File:serial_debug_linux_0.png]]

Revision as of 13:53, 23 January 2014

This page describe how to set up and debug the radxa rock board via serial console.

Windows

Here we use putty as an example to show us how to set the serial debug tools.

Double click the Putty.exe, you will see the interface like:

Serial debug 0.png

Select the Serial, Fill the Serial line with the right serial port,and the Speed with 115200

Serial debug 2.png

You can get the serial port here:

Serial debug 1.png

Finish setting , Click Open the putty will work

Serial debug 3.png

Linux

For connecting UART/Serial console on Linux, the picocom utility is very handy to use in a Terminal session. You can also use PuTTY for this purpose.

picocom

If you are using Ubuntu, you need to add the current user into group dialout, then close your session and relogin to make changes effective immediately:

 sudo adduser $USER dialout
 gnome-session-quit

Install picocom:

 sudo apt-get install picocom

Open connection to serial line, using 115200 bauds:

 picocom /dev/ttyUSB0 -b 115200 -e w

Note: Escape character is set to 'w', you have to press Ctrl-w Ctrl-x to quit.

PuTTY

Here we still use PuTTY as an example. when start PuTTY firstly you will see this interface:

Serial debug linux 0.png

Select the Serial, Fill the Serial line with the right serial port,and the Speed with 115200

Serial debug linux 1.png

How to get the serial port .First cat /proc/tty/drivers, to make sure is there driver support(radxa board is connected with pc via USB so the device name should be usbserial)

Serial debug linux 2.png

Here we find the line

usbserial            /dev/ttyUSB   188 0-253 serial  

which tell us the driver is ok, then cd /dev/ to confirm whether is there device named ttyUSB* . you can unplug and then plug the usb to get the right device.

Serial debug linux 3.png

Finish setting, Click Open the putty will work!

Serial debug linux 4.png


Note:

1、Under Ubuntu If you got the following error – “Unable to open connection to: Unable to open serial port“. To fix it, add the current user to the “dialout” user group , logout and login to take effect, detail:

 http://jesin.tk/fix-serial-port-permission-denied-errors-linux/