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RTFS USB usbhostmsc Example on c6748

hz gong
Prodigy 230 points
Other Parts Discussed in Thread: TMS320C6748

Hi,

I am trying to run an RTFS USB usbhostmsc example on c6748. The name of this project is : "RTFS_INSTALL_DIR/packages/ti/rtfs/examples/usbhostmsc/bios5/evm6748\ccs3".
I plugged a USB memory stick into the USB0port.

U disk can be operated normally when my program is running with XDS560 emulator.But when the program is downloaded into the DSP IC(TMS320C6748) and successfully booted from FLASH, the U disk can not be read or written.  Why??

 

 

Thank you very much for your help.

  • 0
    TI__Genius 14545 points

    Are you using and GEL files with your program?

  • 0 in reply to dabuan
    Prodigy 230 points

    I am not using GEL files .

  • 0 in reply to hz gong
    Prodigy 230 points

    I tried omap138 evm and my board.

    1- CCS3.3 load program rtfs_1_10_00_30\packages\ti\rtfs\examples\usbhostmsc\bios5\evm6748\bin\Debug\usbhostmsc.out to omap138 evm.CCS3.3 debug Run,It is Succeed when omap138 evm read U disk . When CCS3.3 debug Disconnect,CCS3.3 debug Connect,CCS3.3 debug Restart, CCS3.3 debug Run free that omap138 evm reading  U disk  Succeed.

    2- CCS3.3 load program rtfs_1_10_00_30\packages\ti\rtfs\examples\usbhostmsc\bios5\evm6748\bin\Debug\usbhostmsc.out to my board.CCS3.3 debug Run,It is Succeed when omap138 evm read U disk . When CCS3.3 debug Disconnect,CCS3.3 debug Connect,CCS3.3 debug Restart, CCS3.3 debug Run free that my board reading  U disk  unsuccessful.   Why?

    Extremely vexation!

    Thanks very much for help.

  • 0 in reply to hz gong
    Prodigy 230 points

    Hi,

     My board (cpu tms320c6748) did not design with Real-Time Clock and 32-kHz Oscillator circuit. RTC_CVDD is turgor. These stuation whether or not effect on usbhostmsc function.

     

    Thanks very much for help.

  • 0 in reply to hz gong
    Prodigy 230 points

    Hi,

    In front of the problem why nobody answered?I am very anxious!

    Under the new situation:(examples:rtfs_1_10_00_30\packages\ti\rtfs\examples\usbhostmsc\bios5\evm6748\bin\Debug\usbhostmsc)

    My board load program from my board's flash mamory and run,This board running normal operation.But does not recognize the U disk.At this time,XDS560 Simulator connent my board when do not load gel file,and File -> Load Symbols -> Load Symbols Only file,Then reset and run,Can recognize the U disk.

    This phenomenon is what I don't understand.Please help me to analyze what is the problem.

    Thanks a lot!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!