• State
  • Replies 7 replies
  • Subscribers 85 subscribers
  • Views 139 views
  • Users 0 members are here
Support feedback
Options
Options
Related

Original question:

TMS320F2800157-Q1: Issue in Flashing code in microcontroller TMS320f2800157q1 flash

TMS320F2800137: TIDA-010949 programming issue

Mohit Kumar
Prodigy 20 points
Part Number: TMS320F2800137
Other Parts Discussed in Thread: TIDA-010949

Tool/software:

Hi,

I am using TIDA-010949 development board along with its example code for 600W solar power optimizer.

While using the example code for debugging purpose (generation of PWM waveform for Buck / Boost mode), it works fine.

Controller generates proper PWM output untill the USB power is connected after flashing the code in controller.

But once I disconnected the USB power and re-connects it, controller stops generating any output.

Please advise that what changes are required in program or config file to run the code properly.

  • 0
    TI__Genius 13855 points

    Hi Mohit,

    Is the example that is being used a RAM config or FLASH config?

    Also, are you in FLASH boot mode when powering on the device?

    Thanks and regards,

    Charles

  • 0 in reply to Charles Roberson
    Prodigy 20 points

    Hi Charles,

    1) We have tried both RAM config and Flash Config. But behavior is same in both the configurations.

    2) We have changed the switch combination to FLASH boot mode. But still issue is not resolved.

    Thanks & Regards,

    Mohit

  • 0 in reply to Mohit Kumar
    TI__Genius 13855 points

    Hi Mohit,

    Can you confirm from the memory browser in CCS that the Flash is being loaded properly? What does the memory browser look like after disconnect and reconnect to the device?

    Also, for the program does codestart begin at 0x80000?

    Thanks and regards,

    Charles

  • 0 in reply to Charles Roberson
    TI__Genius 10876 points

    As an additional follow-up, please confirm the state of the 3.3V power rail while the USB is not connected to the computer, and additionally, what the 3.3V rail waveform looks like as you connect.

    Regards,
    Jason Osborn

  • 0 in reply to Charles Roberson
    Prodigy 20 points

    Yes. Program is starting from 0x80000. Please check attached screenshot.

    Further we added led blinking code in main while loop().

    Led is blinking at 1sec during debugging mode or after flashing the code (Till USB power is not removed).

    After re-connecting the USB power blinking rate changed from 1sec to 5sec.

    Regards,

    Mohit 

  • 0 in reply to Mohit Kumar
    TI__Genius 13855 points

    Hi Mohit,

    Ok thanks. Can you respond on the question that Jason asked above regarding the 3.3V power rail stability?

    Thanks and regards,

    Charles

  • 0 in reply to Jason Osborn
    Prodigy 20 points

    Hi Jason, 

    When I flashed the code in TIDA-010949 demo board, USB was connected with laptop (No other power source). At that point of time it is showing 3.28V DC on microcontroller. PWM Waveform is generating perfectly. 

    After that I removed that USB from laptop (No power source for the controller). Then DC voltage is 0V at microcontroller.

    Then I again connected the USB with laptop. Now it again shows 3.28V at microcontroller. But there is no PWM output.

    Note :- I am using the demo software available at TI website for TIDA-010949.