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Working on F28335 does not provide output on Ezdsp F28335

Prathamesh Deshpande56
Prodigy 40 points
Other Parts Discussed in Thread: CONTROLSUITE, TMS320F28335

Hi. I am working on EZDSP kit for f28335. I am using CCS v6 and XDS510LC JTAG. 

I have tried basic codes from Control Suite as well as C2000 Teaching ROM, but I am not able to observe the output on DSO.

I tried a simple code for toggling the GPIO pins. But for few pins I am getting 0 while for few 1. 

Please guide me.

Prathamesh Deshpande

NUS

  • 0
    Guru 192875 points
    Hi Prathamesh,

    The controlSuite examples very well work. Can you tell us what exactly are you doing here? Does your code get loaded onto the chip without any errors?

    Regards,
    Gautam
  • 0 in reply to Gautam Iyer
    Prodigy 40 points

    Thank you Gautam for your reply.

    The code was able to compile without any errors. Even the debugging process was able to start. The problem is I am not able to measure the toggling of the GPIO pin on CRO. 

    I am using eZDSP TMS320F28335 with CCS v6.1.3. The DSP was connected to PC via JTAG C2000 series XDS510LC (Specturm Digital).

    I have tried a different settings for the compiler, debugger, emulator, but still I am not getting any output.

    I really appreciate if I could get some help to solve this problem.

    After this I will be working on program for Sinusoidal PWM using the same DSP.

    Thanking you for your consideration.

    Prathamesh Pravin Deshpande

    NUS.

  • 0 in reply to Prathamesh Deshpande56
    Guru 192875 points
    This means either you've configured GPIOs improperly or monitoring a wrong GPIO. I would recommend you to simply refer:
    C:\ti\controlSUITE\device_support\f2833x\v141\DSP2833x_examples_ccsv5\gpio_toggle

    Let me know if that helps.

    Regards,
    Gautam
  • 0 in reply to Gautam Iyer
    Prodigy 40 points

    Thanks for the link.

    I have referred to the given example.

    My problem is that when I am debugging the program step by step in CCS, the registers shown in the window of the debugging section of CCS are not getting updated even though i refresh it several times. When i manually change the value in the registers (given in the window), then the output of the DSP is changing accordingly. Please refer to the attached image of the window.

    Hope you have got my problem.

    Thanks a lot.

    Prathamesh Pravin Deshpande

    NUS.