• State Resolved
  • Locked Locked
  • Replies 6 replies
  • Subscribers 83 subscribers
  • Views 1000 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMS320F28379D: C2000ware example "usb_dev_serial" configuration: CPU1_FLASH not work after power off

Wayne Huang
Genius 15595 points
Part Number: TMS320F28379D
Other Parts Discussed in Thread: TMDSDOCK28379D, C2000WARE

Champs,

I am asking this for our customer.

We used TI F28379D EVM (TMDSDOCK28379D) and tested C2000ware example code "usb_dev_serial" from

C:\TI\c2000\C2000Ware_1_00_05_00\device_support\f2837xd\examples\cpu1\usb_dev_serial\cpu01

 

It worked with build configuration CPU1_RAM.

 

When we tested with build configuration CPU1_FLASH, it worked before powering off the EVM board.

That is, we could see the virtual USB COM port on Windows device manager when running F28379 on CCS after flash programming.

However, when we powered on the board again, that is, by standalone mode (flash boot), it did not work.

That is, we could not find the virtual USB COM port on Windows device manager.

 

We tested on Windows 10 and 7, and both results were same.

 

Is there anything wrong that we could not run it by standalone mode (flash boot)?

 

Wayne Huang

  • 0
    TI__Mastermind 32995 points
    Do you have the device connected to the emulator when you power cycle it?

    Can you prove the device is properly booting to flash please.

    If the device is properly booting to flash and beginning to execute the flash application, there should not be another problem

    Regards,
    sal
  • 0 in reply to Sal Pezzino
    TI__Genius 15595 points

    Sal,

    I could run another example blinky successfully with standalone mode (flash boot) with the same board so that I did not think there was anything wrong with the TI EVM with default flash boot mode.

    C:\TI\c2000\C2000Ware_1_00_05_00\device_support\f2837xd\examples\cpu1\blinky

    Why does it matter when the emulator is connected and power cycle it?

    But anyway, it fails no matter the emulator is connector or not when we power cycle it.

    Wayne

  • 0 in reply to Wayne Huang
    TI__Mastermind 32995 points
    If the emulator is connected, the boot ROM will go into emulation boot mode and not boot according to the boot mode select pins.

    We will look into this further.

    sal
  • 0 in reply to Sal Pezzino
    TI__Genius 15595 points
    Sal,

    Do you have any update?
    Do you reproduce this on your side?

    Wayne Huang
  • 0 in reply to Wayne Huang
    TI__Expert 3795 points
    Hi Wayne,

    I was able to reproduce this. I am facing the same issue.

    One change i did after facing the issue was added disable watchdog and tried executing in the same way and it worked.

    Can you try it?

    Regards
    Harshmeet
  • 0 in reply to Harsh Singh
    TI__Genius 15595 points

    Harshmeet,

    Yes, I can run it successfully by either adding “DisableDog();” in the beginning of main() in usb_dev_serial.c or setting “WD_DISABLE .set 1” in F2837xD_CodeStartBranch.asm.

    Thank you!

     

    Wayne