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BB view, Can't boot TI SDK image to BBB

Former Member

I am having trouble getting the TI SDK image to boot on BBB. I  wrote the image file,

bb-view-emmc-flasher-2013-09-09.img to a micro ad card and flashed the emmc accordingly. After Flashing the BBB (all LEDs steady lit after only 15 mins, vs the typical 30-45?)  I install the BB view cape and 7" LCD module, and reboot without the sd card.  I can see the backlight come on, but never displays anything. The pwr led on the BBB stays lit, but none of the other LEDs, on the BBB. However, One of the leds on the cape does blink. any help would be greatly appreciated.

  • 0

    Hi,

     

    I'm experinsing almost the same thing. Can it be related to a new version of the BBB?

     

    How can someone from the developer be contacted?

     

    Regards.

  • 0

    I tried the TI SDK with a 4.3" BBB some time ago. Sounds like I did exactly what you did and it worked for me.

     

    Usually there's some different settings needed for the different displays, so it might be worth seeing if there's any docs that tell you what needs changed.  My recollection is that it's probably a line in uEnv.txt that you change to say which display you have connected, but I could be wrong.. Like I say it was a while ago..

  • 0

    Any luck figuring this out?  I'm also having this issue.  I see some faint pixels on the screen which quickly fade shortly after powerup, a line across the screen, and then black, with backlight enabled.  The user LEDs on the BBB don't indicate any activity, but LED0 on the cape blinks twice.

     

    On first glance, it looked like it could be a power issue, but I haven't been able to confirm.

  • 0

    Alright, I've got things working now.  If you have a 3.3v FTDI 232 serial cable/adaptor, you should be able to resolve this fairly easily.  Here are the steps that I took:

    • Shutdown/remove power from BBB
    • Remove cape from BBB
    • Plug in FTDI cable, and open/configure your favorite terminal application (I'm on a mac and really like CoolTerm (http://freeware.the-meiers.org/), but there are other options
    • Power BBB, and verify that bootup occurs (there will be no LED activity on the board, but you will see the bootup sequence via your terminal)
      • Login password for "am37x-evm" is "root"
    • Make changes described in the user manual (here: http://www.farnell.com/datasheets/1817212.pdf) in section 5.1.3, including removal of the 'pointercal' file
    • Perform shutdown ("shutdown now")
    • Remove power source
    • Place cape onto BBB
    • Supply power (through barrel jack is probably more reliable, but I have found that my USB port does actually supply enough current)
    • If all is well, the calibration screen will now appear!

     

    Good luck!

  • 0 in reply to aaronpbrooks

    I think it's related to powering the board from USB or external supply. I was unable to restore the BBB until I connected an external supply, and right now I have a 7'' LCD running directly from the uSD just as described in the manual for the old BB.

  • 0 in reply to Former Member

    Despite my claim that I got the board powered via USB, you are likely correct.  I got as far as the calibration before it started to draw too much current from my USB.  I switched to a 3A 5V supply and it worked swimmingly.  Hooked up to my variable power supply and measuring with a cheap multimeter, the BBB w/display attached draws just shy of 1A (~950mA), with peak somewhere around 1.2A.

  • 0 in reply to aaronpbrooks

    Exactly what I needed to do! Display is working perfectly! I appreciate the help.

  • 0 in reply to Former Member

    See the Post from Aaron Brooks, and do as he suggested. This should get you going. Good Luck!

  • 0 in reply to aaronpbrooks

    Hi Aaron,

     

    I know this thread is one year stale, but I am just entering these waters so it is new to me... I am trying to figure out the dimensions the TI EZ-Linux has to offer that are different than the Angstrom distro, and it seems like programming one of my two BBBs with the TI-SDK is the way to go. I am unable to connect the board to the HDMI monitor I have, both my 5V supply and my HDMI are two-prong appliances so I suspect the grounds might be floating from each other? So monitor, keyboard, mouse option is out. That is related to my main problem of since I flashed the board last night (in kind of record time, less than ten minutes) I can't get any indication that it is working. Here is my real question:

     

         Why do I have to use the 3.3 FTDI cable to communicate with the BBB running TI-SDK? (I am assuming this to be a foregone conclusion and ordering one this morning.)

         Why does the method of mini-usb not work with this OS like Angstrom?

         Is there a way to put the TI-SDK on the sd card as a bootable OS rather than as an EMMC flash image? Seems like the 2GB onboard does not leave a lot of room for additional stuff.

     

    My goal is to get a minimal version of wXPython running for some cool touchscreen UI development, I didn't mention yet that I am paying with both the 4.3 and 7 inch LCD for BBB.

     

    If you or anyone with the know-how can answer this, please hop in.

     

    Respectfully,

     

    Jack AKA lotusf33t