Actions
Forum Thread Details
  • State Suggested Answer
  • Replies 6 replies
  • Answers 3 answers
  • Subscribers 331 subscribers
  • Views 843 views
  • Users 0 members are here
Related

[ULTRA96 V2] WiFi and OpenAMP Matrix Multiplication problems.

rogueup

Hi All,

 

I recently got the u96V2-G dev kit and I am tinkering around with it.

I flashed the delkin SDHC received with ultra96v2_oob_2020_1_201123_8GB.img available on avnet website.

I am attaching the serial COM putty logs for reference.

Till now I have faced 2 problems:

  1. Connecting to external WiFi, takes me to a screen with following response 

     "Internal Server Error

     The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application."

    2. Running the "OpenAMP Matrix Multiplication" example project. This also takes me to the same response page as the WiFi  configuration does.

        Also from serial console logs I can see the following as well:

          "Starting application...

          [ 1120.283265]  r5@0: RPU boot from TCM.

          Initialize remoteproc successfully.

          creating remoteproc virtio

          [ 1120.283484]  r5@0#vdev0buffer: registered virtio0 (type 7)

          [ 1120.300278] remoteproc remoteproc0: remote processor r5@0 is now up

          [ 1120.309829] virtio_rpmsg_bus virtio0: rpmsg host is online

          initializing rpmsg shared buffer pool

          initializing rpmsg vdev

          initializing rpmsg vdev

          ERROR: Failed to create endpoint.

          Stopping application..."

         

          I am trying to understand what might cause a failure to create end point.

 

Thanks in advance!

Attachments:
putty.log.zip
  • 0

    I found the same problem with #2 above and have already reported this to our software engineers. However, they are out of office until 2021, so I don't expect a response for a week or two.

     

    I did not see the same thing with #1. How are you interacting with the Ultra96-V2? It shouldn't matter, but I want to repeat the steps the exact same way that you are. I currently have a monitor and keyboard connected, as well as viewing the terminal output.

     

    1. Browse to Configurations --> WiFi Setup
    2. Click Refresh Connections
    3. Find and select my network under "Network Name"
    4. Now I have to select the radio button for "Text Field" in order to enter the passphrase. (Shouldn't have to do this. I have also reported this for review as well.)
    5. After entering the passphrase, hit Enter on the keyboard
    6. I see "Successfully added network. It may take a few seconds to actually connect."
    7. On a different computer, I log into my router. If I see it has assigned an IP address to "ultra96v2-2020-1" then I know it worked.
    8. This is what I see in my terminal, "root@ultra96v2-2020-1:~# [  572.053392] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready"
    9. In the terminal, I can verify my connection with something like "ping avnet.com" which is now working.

     

    Please share more specific instructions as to what you are doing, and I will try to duplicate here.

     

    Bryan

  • 0 in reply to bhfletcher

    Hi,

     

    Thanks for the reply.

    Regarding problem# 1

    I was trying to replicate page no 24 in http://zedboard.org/sites/default/files/documentations/Ultra96-V2-GSG-v1_1.pdf .

    I click on refresh connections and select the desired WiFi network, enter the password and click connect. Then it takes me to the "Internal server error page."

     

    I should also probably mention this I was following steps mentioned in page 14 of the Ultra96-V2-GSG-v1_1.pdf, I couldn't find wifi.sh and wpa_supplicant.conf in the root directory. Instead I found:

    "

    root@ultra96v2-2020-1:~# ls

    ble.sh bt.sh  pmic-prog  usb_gadget_ethernet.sh

    root@ultra96v2-2020-1:~#

    "

    Is this expected?

    I will try the steps mentioned by you above and report back the findings.

     

    Regarding problem# 2, I was really looking forward to use this time off to get on with some FPGA stuff once I get over the initial few example projects working.

    If this issue is with ultra96v2_oob_2020_1_201123_8GB.img, could you point me to the direction of repository of previous images, preferably the one which has all of the example projects working.

    I can reflash and get on with some example projects.

     

    Thanks!

  • 0 in reply to rogueup

    Sorry for the confusion. There is an updated Getting Started Guide. Please review this blog and switch to the 2.0 GSG if you are using the 2020.1 image. With the 2020.1 image, the wifi.sh and wpa_supplicant.conf are not necessary, so they were removed.

    2020.1 Update to Ultra96-V2 Out-of-Box Image

     

    We are in the process of getting that document added to the product page.

     

    If you want to go back to the previous image to see the OpenAMP project working, use the link below. However, note that the sensors and pmic-programming capabilities were not yet developed at the time of this image.

    http://avnet.me/ultra96-v2-oob-2018-3-8GB

     

    Bryan

  • 0 in reply to bhfletcher

    Hi,

     

    Thanks for the reply, I have tried to connect with 2 wifi networks, OPEN and encrypted (however both of them need password to logon, probably something I need to fix).

    The open network Wifi is the one I tried attaching U96 first and it did proceed as showed in the guide. However at the time there was network in the backhaul and I couldn't ping outside world (google.com etc) from the U96 console terminal.

    Then I tried connecting U96 to encrypted network, for some reason as long as the previous network was visible U96 won't detach from it and held a wlan0 address.

    Had to turn off the open network, but still no luck with the encrypted network.

    Is there a way for me to make the U96 forget the wifi networks and start the process again?

     

    I can't yet see the U96 output on a monitor, I have a Blue Rigger MINI-DP to HDMI connector, ideally it should work, but its not for my case.

  • 0 in reply to rogueup

    The SSID used to be stored in the wpa_supplicant.conf file, but that is not the case anymore. I'm trying to find out, but the people who know are out this week. I'll keep looking. Of course, the brute force method would be to re-image your SD Card.

     

    For the HDMI output, you must use an ACTIVE adapter. You can see some proven options in this thread:

    Ultra96 Accessories

     

    Bryan

  • 0 in reply to bhfletcher

    A bug was found where some 'encrypted' connections were defined as 'open.' We will get this fixed soon and release an update.

     

    To forget previous Wi-Fi connections on Ultra96, I was given two options.

     

    Solution1:

    Remove the connman config:

    # rm /var/lib/connman/ultra96.config

     

    then reboot the board

     

    Solution2:

     

    root@ultra96v2-2020-1:~# connmanctl services

    *AR Pixel_6957          wifi_f8f00571e26e_506978656c5f36393537_managed_none

        dlink-4CEC wifi_f8f00571e26e_646c696e6b2d34434543_managed_psk

     

    root@ultra96v2-2020-1:~# connmanctl disconnect wifi_f8f00571e26e_506978656c5f36393537_managed_none

     

    After each of these solutions, you should be able to connect back to the ultra96v2 network, and re-configure the wifi.