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DSP F2808 reset problem

mingxing fu
Prodigy 40 points

Hello everyone,

I encountered one problem that my DSP F2808 reset about every 7ms, and request for help.

Attached is the test wave and circuit.

7774.RESET.doc

After I flashed the dsp and turned off the power, then turned on the power again.I found the wave of fig.3 that DSP reseted continually and RC circuit couldn`t charge to high level voltage.And each time I reset the power , the wave is the same. I don`t know which cause it, as I had disabled the WDG and tested the Oscillator was normal. Even I conneteted the pin2 and pin3 of D55 with lead directly, the DSP also reset every 7ms. I had taken the D55 away, and found the XRS pin of DSP F2808 also emit the reset signal. Of corse, I am sure the program is OK! Who can help me to analyse the reason? Thanks!

 

Regards,

Jason Fu

  • 0
    Genius 5170 points

    I am assuming your code works from RAM and you are experiencing this issue only when trying to run from flash - if that is the case then please make sure you initialized alll sections appropriately before burning the flash.