TMS320F2800137: TIDA-010949 programming issue

Mohit Kumar

Prodigy 25 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.

4 months ago

0 Charles Roberson 4 months ago

TI__Genius 15040 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 Mohit Kumar 4 months ago in reply to Charles Roberson

Prodigy 25 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 Charles Roberson 4 months ago in reply to Mohit Kumar

TI__Genius 15040 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 Jason Osborn 4 months ago in reply to Charles Roberson

TI__Genius 11076 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 Mohit Kumar 4 months ago in reply to Charles Roberson

Prodigy 25 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 Charles Roberson 4 months ago in reply to Mohit Kumar

TI__Genius 15040 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 Mohit Kumar 3 months ago in reply to Jason Osborn

Prodigy 25 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.

0 Jason Osborn 3 months ago in reply to Mohit Kumar

TI__Genius 11076 points

Mohit,

Based on that description, one or more of the following needs to be corrected:

Boot mode is not set to Flash boot mode
Build is not set to Flash config

It sounds like the board just isn't running the code, which means one or both of those things is the issue.

Regards,
Jason Osborn

0 Mohit Kumar 3 months ago in reply to Charles Roberson

Prodigy 25 points

Hi charles,

Any other suggestion?

Thanks & Regards,

Mohit Kumar

0 Charles Roberson 3 months ago in reply to Mohit Kumar

TI__Genius 15040 points

Hi Mohit,

Is any interrupt being triggered on the device on bringup that would cause it to not proceed with the code at 0x80000 in Flash Boot Mode?

Thanks and regards,

Charles

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F2800137: TIDA-010949 programming issue