• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 98 subscribers
  • Views 218 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

Secondary boot and USB (or USB connection after SW reset)

ran aricha
Prodigy 40 points

Hello,

I'm using C5515 (ezDSP) , parallel flash for secondary (SW) boot, and "application". clearly, the "SW boot" load and call the "application".

When I power up the boot when the USB cable is connected to the PC, the "SW boot" do not load the application, and wait for user input using USB (CDC COM4) - works.

When I power up the boot when the USB cable is disconnected to the PC, thw "SW boot" loads the "application", and the "application" wait for user input using USB (CDC COM4) - works.

Method for loading an "application": Call "application" 's _c_int00.

BUT...

When I power up the boot when the USB cable is connected to the PC, the "SW boot" do not load the application, and wait for user input using USB (CDC), and the input is "Load Application", the PC lose connection (COM4 is lost).

What do I miss???

please help.

Ran

  • 0
    TI__Mastermind 23785 points

    From what I read, you cannot download your application to C5515 if you power up C5515 with the USB cable connected to PC, correct?

    Can you hear the PC sounded the detect and device shows up on Device Manager?

    Regards.

  • 0 in reply to Steve Tsang
    Prodigy 40 points

    Hi Steve,

    Thanks for reply.

    I will describe my problem again.

    I have 2 SW; "boot" and "application". Both utilize the USB CDC. when the cable connected to the ezDSP while power up, the "boot" wait for user command. if the command is "run application", then it run the "application". In this case, when the "application" starts running, the connection with the PC lost (COM4 - USB CDC port - disapear) even though the cable still connected.

    the "run application" command, call to "application" _c_int00.

    Thanks

    Ran