• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 97 subscribers
  • Views 525 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.

BIOS/USB on C6748 (OMAPL138)

ee ll
Prodigy 60 points

Other Parts Discussed in Thread: OMAPL138

We want to develop a USB connection between DSPs on different OMAPL138 chips
We succeeded in running BIOSUSB example of HID connection between the DSPs - one acting as device and other as host - but for the mass storage there is only
one project for the device side and only as a library
We tried following the documents of BIOSUSB mass storage development but somehow the routine uwd_mass_app_init() on the device side isn't called by the USB stack at init and we didn't find any help on the net or in the documents for this.
Our question is if there is a running example for mass storage USB connection that contains both device and host and compiles as image so we can continue to develop
above this.

  • 0
    TI__Prodigy 550 points

    hello ee ll,

     

    There is sample application available for usb  Host Msc with RTFS package, which can be used for USB Msc Host.

    I need to check why  "uwd_mass_app_init()" is not getting called by the stack.  I will get back to you on this.

     

    AFAIK, there is no running example for usb MSC connection that contains both device and host. 

     

     

     

     

     

     

     

  • 0 in reply to Pankaj Anand
    Prodigy 60 points

    Thanks Pankaj

    I referred to the RTFS example of host msc and found only two init routines associated with USB:

    configure_USB()

    dsp_bios_init()

    all the rest of the code is to do with the file system etc.

    We need to write an application that sends & receives messages from host (one DSP) to device(other DSP) and vice versa. no need for file system - only the USB connection.

    We wrote device code according to BIOS USB documents and as I said before the routine uwd_mass_app_init() isn't called  and on the host side we didn't figure out how to send & receive - only how to init the stack

    Maybe some TI customer did that work and have a running mass storage USB connection over DSP?

    Thanks again

  • 0 in reply to ee ll
    TI__Prodigy 550 points

    send me ur email id. 

  • 0 in reply to Pankaj Anand
    Prodigy 60 points

    my email is e_levy@hotmail.com