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How can my launchpad 28027F run in stand alone mode?

Mark Zhu
Prodigy 40 points

Other Parts Discussed in Thread: CONTROLSUITE

Hello,

I was using dsp 28027F to control a small toy car in a competition. The first problem occurred since the first time I loaded my program into my launchpad: it simply doesn't work after being re-powered from sources other than my computer. And the program starts only when i use ccs to debug.

Things wasn't that worse before yesterday, because i could still make it by following the procedures: load program from ccs->debug->power up the launchpad from elsewhere->disconnect lanchpad with my computer. And everything worked just well.

However, i find even that way no longer works. My program just get stuck when i disconnect it from my computer, and reset just doesn't work. I'm desperately eager to know why this happened? Is it because of errors in my codes or some wrong hardware set(like disconnecting any jumpers)

Sorry for my poor English. I really appreciate any answer.

Thanks.

  • 0
    Guru 192875 points

    Hi Mark,

    Mark Zhu said:
    The first problem occurred since the first time I loaded my program into my launchpad: it simply doesn't work after being re-powered from sources other than my computer. And the program starts only when i use ccs to debug.

    This is because you're running your code from RAM and not Flash. To run your code from flash please refer this example code:

    C:\ti\controlSUITE\device_support\f2802x\v129\DSP2802x_examples_ccsv4\flash_f28027

    Regards,

    Gautam

  • 0 in reply to Gautam Iyer
    Prodigy 40 points

    Hi Gautam,

    Thanks for your response. But I think I'm running from flash indeed. i can see the "erasing from flash" and "loading program" dialog. also my code is too big to be wholly put into ram.

    Regards,

    Mark

  • 0 in reply to Mark Zhu
    Guru 192875 points

    Mark Zhu said:
    Thanks for your response. But I think I'm running from flash indeed. i can see the "erasing from flash" and "loading program" dialog. also my code is too big to be wholly put into ram.

    Cool, then what about your boot pins? Are they properly configured?

    Regards,

    Gautam

  • 0 in reply to Mark Zhu
    Guru 20525 points

    Hello everybody!

    Mark, just in case, check, please, that CodeStartBranch.asm is presented into your project folder.

    Regards,

    Igor