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MSP430F5418A: Error: Debug mode vs. Standalone Mode

Liang Ge
Prodigy 180 points

Part Number: MSP430F5418A

I'm developing a product based on msp430f5418a. I had my algorithm executed on debug mode and it worked fine. However, after disconnecting the board to PC and re-power it, it won't work. I connected it back to PC and run debug through CCS, and it worked again. So I guess something is wrong in the toolchain or I have a reset issue.

On the board, we have the one ADC input under 2048 samples per second and processing algorithms. 

Would someone give me a hint on where to start regarding the issue? Is it related to timing?

Thanks,

Liang

  • 0
    TI__Expert 4695 points

    Hi Liang,

    It would be great if you could tell what your application is doing.

    Can you check with a simple blink led demo if the code is running when it is powered up, without connection to PC?

    Best regards

    Lukas

  • 0 in reply to Lukas Badura
    Prodigy 180 points

    Hi Lukas,

    Let me briefly describle my application. It's a simple audio detector. The ADC is attached to a microphone. I set the sample rate to be 2048 samples per second by timer configuration. After acquiring each sample, an interrupt function is called. I put all my signal processing in the interrupt function. The output is a GPIO port connected to an LED.

    I'm guessing my issue could be 1) a reset problem, or 2) a timing error in my signal processing.

    Would this information be helpful? Thanks!

    Liang

  • 0 in reply to Liang Ge
    TI__Expert 4695 points

    Hi Liang,

    In fact, this is helpful.

    However I would start at the beginning and check my initial request to run a blink LED demo in free run mode.

    Lukas

  • 0
    Intellectual 455 points
    Hi
    Considering that the application runs smoothly with the debugger connected, I would check the following:
    1. Check your reset and VCC connections on the standalone board. Try probing them even in the standalone case. It can be the case that with debugger connected both reset and supply are provided by it, so either one of them maybe an issue on the standalone system.
    2. It may be possible you are running your code from RAM instead of flash, because of which when you disconnect power , the code is potentially lost. Check that

    However, I will suggest that you go with Liang's suggestions of running a simple blinky and then do the above checks. It may be the case that your issues are associated with some other component of your system, and it makes sense to isolate out the microcontroller functionality from the rest of the system

    Regards
    Nishant

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