Compiler/LAUNCHXL-F280049C: Problem with the sample program of LAUNCHXL-F280049C

Jonathan Geronga

Part Number: LAUNCHXL-F280049C
Other Parts Discussed in Thread: C2000WARE

Tool/software: TI C/C++ Compiler

Hi Team,

I am posting this on behalf of our customer.

Our customer was working on the sample program: dual_axis_servo_drive_fcl_qep_f28004x
They want to boot it from flash, however, when they try to, nothing happens.
They already downloaded it into the flash and the switches are in the right positions as well, however it does not boot.
Though they can boot it from CCS.

It can operate when connected to ccs however cannot operate individually from flash.

Please let me know if you have any questions for the customer.

Thanks,

Jonathan

over 5 years ago

0 Kevin Allen18 over 5 years ago

TI__Mastermind 42986 points

Hi Jonathan,

They selected and programmed the 'F28004x_FLASH' build configuration of the example code?

Best,

Kevin

0 Whitney Dewey over 5 years ago

TI__Guru 53175 points

I don't see the CodeStartBranch.asm file in that project. Without it, there's nothing at the flash entry address to tell the application to jump to _c_int00. Try adding it to the project and see if it's able to boot from flash then. It can be found in the SDK under

c2000ware\device_support\f28004x\common\source\f28004x_codestartbranch.asm

I'll file a bug report to get this corrected.

Whitney

0 Fenghai Liu over 5 years ago in reply to Whitney Dewey

Prodigy 30 points

Nothing.

I hope somebody try it,your board,your program.

Best Regards!

Harry

0 Whitney Dewey over 5 years ago in reply to Fenghai Liu

TI__Guru 53175 points

I had a chance to try it myself and found there were a few additional steps I needed to take to get it to boot from flash.

The .map file showed that code_start wasn't being correctly placed the entry point, so I had to add .retain "codestart" to the CodeStartBranch.asm file. See this post for more detail.
c_int00 (which is called by code_start) is taking so long to run that the watchdog is timing out and resetting the device. Edit CodeStartBranch.asm to set WD_DISABLE to 1. See this post for more detail.

Whitney

0 Fenghai Liu over 5 years ago in reply to Whitney Dewey

Prodigy 30 points

Thanks for finding out where the problem was and fixing it.

Best Regards,

Fenghai

0 Fenghai Liu over 5 years ago in reply to Whitney Dewey

Prodigy 30 points

Hi Whitney,

the program can successfully boot to flash. However, when I encrypt the OTP and boot from zero boot pin mode together, it will not boot into flash. Other programs can be booted successfully, even when encrypted. Can you try it out when encrypting and booting it from zero boot pin mode and let me know if it works?

Thank you again and best regards,

Fenghai

0 Whitney Dewey over 5 years ago in reply to Fenghai Liu

TI__Guru 53175 points

Thanks for your patience. Were you able to find the cause of your issue? If not, can you tell whether or not the application is reaching main() or if it's getting stuck somewhere before that like in boot ROM? If you aren't sure, can you toggle a pin at the start of main() so you can observe whether or not it's being reached?

Whitney

0 Whitney Dewey over 5 years ago in reply to Whitney Dewey

TI__Guru 53175 points

Can you also try the debugging technique I describe in this thread to try to narrow down where it's getting stuck if it's not reaching main()?

TMDSCNCD280049C: The device won't wake up after powered on if a modified linker command file is utilized...

e2e.ti.com

Part Number: TMDSCNCD280049C Other Parts Discussed in Thread: C2000WARE , TMDXIDDK379D Hi Champs, A customer has been facing a problem that the program does not

Whitney

C2000™︎ microcontrollers

C2000 microcontrollers forum

Compiler/LAUNCHXL-F280049C: Problem with the sample program of LAUNCHXL-F280049C

TMDSCNCD280049C: The device won't wake up after powered on if a modified linker command file is utilized...