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Problems with Communication to EV3 via USB
http://robotc.net/forums/viewtopic.php?f=1&t=11576
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Author:  EggiMaster [ Fri Jun 26, 2015 9:04 am ]
Post subject:  Problems with Communication to EV3 via USB

Hello,

I installed ROBOTC for LEGO-MINDSTORMS v4.32 on my laptop with Windows 7 Ultimate.
I need it for my EV3-brick.
I start the program, connect my EV3 via USB, choose platformtype EV3 and download Linux Kernl. If I try to download the firmware or compile and download an example program, i get a message like 'unable to communicate to EV3' and under 'Error Code:' is nothing.
Then I resetted the EV3-brick and repeated these steps with the same results.
With LEGO MINDSTORMS EV3 Home Edition i have no problem to communicate with my EV3.
I tried to reinstall ROBOTC for LEGO-MINDSTORMS v4.32, I restarted the EV3-brick and I disconnected an connected the EV3-brick from Laptop, but nothing works.
What could I do?

Thank you,
EggiMaster

Author:  mightor [ Fri Jun 26, 2015 9:31 am ]
Post subject:  Re: Problems with Communication to EV3 via USB

Hi there,

You can find some good instructions here. I think you're simply missing the ROBOTC VM on your brick, that's all :)

= Xander

Author:  EggiMaster [ Fri Jun 26, 2015 12:33 pm ]
Post subject:  Re: Problems with Communication to EV3 via USB

Hello,

I already followed exactly these instructions. Everytime I choosed Standard File to download firmware i got this error message. Even if i tried to download a simple example-code on the brick, I got this error message, too.
Under Robot/LEGO Brick the program seems to recognize my brick and the download of the operating system on my EV3 works fine.
I forgot to note, that I use the trial-version (for 10 days).

Thanks,
EggiMaster

Author:  mightor [ Fri Jun 26, 2015 12:38 pm ]
Post subject:  Re: Problems with Communication to EV3 via USB

Please send a mail to support@robotc.net and be sure to add a link to this forum thread in it.

= Xander

Author:  EggiMaster [ Wed Jul 01, 2015 5:37 am ]
Post subject:  Re: Problems with Communication to EV3 via USB

the exact error message is:

"Unable to open a communication link to the robot. Check if the robot is powered on and link (USB, BT or Wifi) is setup correctly.

Error Code:"

Author:  mightor [ Wed Jul 08, 2015 12:21 pm ]
Post subject:  Re: Problems with Communication to EV3 via USB

Hey there,

Could you please provide us with the complete message log of the attempted firmware upload? You can do that by performing the following steps:
Enable "Super User" menu level:
Attachment:
Screenshot at 18-12-14.png
Screenshot at 18-12-14.png [ 3.93 KiB | Viewed 10684 times ]


Next, enable the logging in the preferences pane. Make sure "Message Tracing" is set to "Character level"
Attachment:
Screenshot at 18-11-52.png
Screenshot at 18-11-52.png [ 57.37 KiB | Viewed 10684 times ]


Now, open the message log window:
Attachment:
Screenshot at 18-12-50.png
Screenshot at 18-12-50.png [ 7.22 KiB | Viewed 10684 times ]


Just use copy and paste to retrieve the text from the message window and put it into a text file or copy into a reply to this post.

Thanks!
= Xander

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