View unanswered posts | View active topics It is currently Wed Jun 26, 2019 5:52 pm



Reply to topic  [ 5 posts ] 
 Access to uBoot? 
Author Message

Joined: Thu Aug 01, 2013 1:34 pm
Posts: 9
Post Access to uBoot?
I did some searching but didn't find anything.

How would one get to the uBoot interface?

I tried a null modem connection to the Utilite's COM1 port with 115200 8N1. That didn't seem to work.

Miles


Fri Oct 04, 2013 5:13 pm
Profile
Site Admin

Joined: Sun Mar 13, 2011 11:52 am
Posts: 390
Post Re: Access to uBoot?
Null modem to Utilite COM port should work. Please note that you should use the COM connector on the front panel.
Required settings are: 115200, 8N1.
Ensure that flow-control and carrier-detection are turned off.
Refer to http://www.utilite-computer.com/wiki/index.php/Utilite:_Android:_Serial_console_connection for additional details.

_________________
---------------------------
Igor Vaisbein
Utilite Product Manager

---------------------------


Sat Oct 05, 2013 7:06 am
Profile

Joined: Fri Mar 14, 2014 9:35 pm
Posts: 13
Post Re: Access to uBoot?
If your trying to access the bootloader you will need a "null modem" adapter and a usb to db9 cable. Make sure its a "Null Modem", NOT a "DB9 Serial Coupler". They will look the same on the outside. Inside the pins are different. So, look for proof of "Null Modem" on the device. The picture I have added showing USB-DB9, 2 Null Modem adapters (showing both sides) and the cable supplied by utilite, DB9 to mini USB-b.


Using Terminal on a Mac/Linux type:
ls /dev/tty.usb*

Which should display your usbserial.
tty.usbserial

Then to connect. Type:
screen /dev/tty.usbserial 115200 8N1 (press enter)
Make sure to interrupt the boot so your connection takes effect.

I hope this helps.

Wopr73


Attachments:
cable.jpg
cable.jpg [ 250.15 KiB | Viewed 3547 times ]
Sun Apr 06, 2014 4:09 am
Profile

Joined: Mon May 30, 2016 5:17 pm
Posts: 1
Post Re: Access to uBoot?
igorv wrote:
Null modem to Utilite COM port should work. Please note that you should use the COM connector on the front panel.
Required settings are: 115200, 8N1.
Ensure that flow-control and carrier-detection are turned off.
Refer to http://www.utilite-computer.com/wiki/index.php/Utilite:_Android:_Serial_console_connection for additional details.


Is the Utilite COM port the only method to access uBoot?

Reading the Utilite boot sequence in the Introduction http://www.compulab.co.il/utilite-compu ... t_firmware, led to believe possible to interrupt, but unable to do so watching boot sequence with HDMI (not serial console).

USB cable included in box for Utilite purchased in AUG 2015. Will ths work with Utilite COM port?


Mon May 30, 2016 5:52 pm
Profile

Joined: Sat Jan 18, 2014 8:59 pm
Posts: 187
Location: Hamburg, Germany
Post Re: Access to uBoot?
201605301316 wrote:
...
USB cable included in box for Utilite purchased in AUG 2015. Will ths work with Utilite COM port?


The cable looks like an USB-COM cable, but it is an ultra mini to DB9-F serial 1-1 cable (CABDB9UMP). You need a NULL-Modem cable at least and a RS232 to USB connector or appropriate level shifter (5V to 3.3V/1.7V) to connect the serial console to another device.


Tue May 31, 2016 9:18 am
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 5 posts ] 

Who is online

Users browsing this forum: No registered users and 0 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group.
Designed by STSoftware for PTF.