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debugging "blinky" for MPU

So close yet so far...

Hardware: TI AM1707 EVM - ARM926EJ-S microprocessor (not MCU, so not officially supported in the device database)

Debugger: Segger J-Link

Application: GNU compiler toolchain + working LED code

When loaded with J-Link + GDB, the LEDs light up correctly

When loaded by J-Link + uVision, the debugger SEEMS to give me access to the board, but the application doesn't run correctly (starts near 0xFFFF0000, which is on-chip local ram)...

Am I missing something totally basic here? Any help would be greatly appreciated!!

-Jonathan

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  • @Jonathan Chen,

    It might be wise for you to stick around the forum for a while before judging the contributors too much.

    There are a fair few who have got a considerable amount of experience and are willing to share the knowledge gained through that experience.

    Erik is one of them.

  • @Silly Sausage
    Thanks for some words of reason, the first I've seen...But to be fair, I've yet to learn anything technical from this disorganized and hard to search forum.

    @Per Westermark,@Tamir Michael
    You've really blown Silly Sausage's case.

    So in any case, I do believe this is my final post to this unmoderated and utterly unhelpful forum. @Keil Thanks for hosting!

  • Well consider this:
    - we - as end users - can't know what may be wrong in your project files.

    - the money your company spent on the Keil license gives you access to Keil support. They can help figuring out what is wrong with your project.

    - if asking for help on an end-user forum, it is totally reckless
    to blame people who do answer. Even if the forum doesn't have any ignore function, you are writing in huge capital letters "Ignore me. I am not a person worth spending time helping."

    - threatening to leave a forum is really not a mature route to go. If you first try to make people angry and then threaten to leave, you will only make people clap their hands.

    - threatening to leave a forum is also quite counterproductive, since it only guanrantees that you can't get any help. And quite a number of people have received quite a lot of help on this forum, whatever you decide to believe. If you want to prove me wrong - make a summary over the last 1000 threads... When you have filtered out the "help me cheat on my school work", the number of people who have received good help are quite significant.

    - if you want skilled help from a professional, it helps if you show up behaving like a professional. If going into tantrums, you don't get any help. Which isn't proof that the forum isn't helpful.

    - professional, payed-for support is given to everyone entitled to it. When asking for help on a public forum on the other hand, the old adage about earning trust/respect/... will still hold true. People with good social skills will receive many times more help than people lacking social skills. May be seen as unfair, but that is how life is. People don't spend time on someone who tries to bite.

    - this forum is very well regarded by Google. So the forum threads ends up very high when searching. How do you want to show up on Google searches? As a grumpy person with tantrums? Or as a skilled and mature developer? Maybe you should let one of your friends review this thread. If they are honest, they will tell you that the outcome of that post of yours was nowhere near what you may think. Erik had not written anything warranting that post. The signals sent out by that post was not about professionalism. But about lack of maturity.

  • You know, I went back and actually bothered to read your posts and realized you don't need technical advice anymore and your issue is resolved. You actually wrote a long and detailed post filled with technical information that might help future readers that are in a similar situation, but since the threads on this board are so poorly organized, that'll probably never happen.. In this thread, you're the only person contributing non-trivial technical information, and I applaud that.

    I read more closely and found that you were not "threatening to leave" the forum, you were leaving the forum, and I completely understand how you feel. If I had posted some questions, worked it out the answer myself, and shared it with the forum, only to be flamed by "no, confound it you stoopid n00b", I'd never post again either. I mean, why contribute to a community like that? The whole point is to contribute knowledge to a shared pool, however poorly organized!

    This place makes TI's professionally hosted forums seem that much more incredible, and I highly encourage any TI users in this forum to migrate to e2e.ti.com, which is much better organized, easier to search, and professional. This forum doesn't require login or even have terms of service beyond "other customers will reply to you", and the potential for abuse ridiculously high.

    Since you mentioned "selection process", you are probably still trying out the free evaluation version of MDK and hence Keil technical support is not available to you, so I apologize for inconsiderately suggesting something as obvious as "go submit a support ticket".

    I guess I really need to work on my basic reading skills, but at least I don't post stupid stuff like Tamir "What potty mouth you have" Michael.

    On behalf of all Keil end users, I'd like to apologize for the immature people that populate and troll this forum, and for my first two posts.

  • Yes, it's a deficiency of this forum that people can select any name when posting.

    But what is the maturity of someone who fakes the name of someone else? You felt too cornered about the trolling in that response you wrote to Eriks posts?

  • no, confound it
    there has been quite a few posts lately where 'ARM' has been used as an identifier for device dependent parameters, it is getting old for every post having to ask "WHAT?" about some missing detail. "0xFFFF0000 (start of ARM local RAM)" is blatantly false. Also, the OPs reaction to this was (horray) to identify what he was using and state the actual problems (that he had managed to work through).

    you stoopid n00b
    I posted no such thing, I even gave an example of what it should be.

    That some are so fragile that they can not handle corrections is not my problem.

    Erik

  • Per,

    I assume that you meant this clinically:

    but at least I don't post stupid stuff like Tamir "What potty mouth you have" Michael.

    Erik certainly does not need my defense - but the record I stand behind what I said.

  • Let me try again (it is my trade mark is it not..)

    Per,

    I assume that you meant this cynically:

    but at least I don't post stupid stuff like Tamir "What potty mouth you have" Michael.

    Erik certainly does not need my defense - but for the record I stand behind what I said.

  • @Silly Sausage,
    you know, i really do come across as a pain, thank you for pointing that out,

    0xFFFF0000 is the start of arm local ram in the am1707 device-dependent memory map, so it was a miscommunication that i should have tried to clear up instead of posting a cryptic "you are wrong"

    i should really look into this stuff first before posting

  • I did NOT post the above although it states "Author erik malund"

    Erik

  • ^^^ zomg this guy is impersonating ME, how did he do that??? i did NOT write the post saying "I did NOT post the above although it states "Author erik malund"

    Erik"

    Erik