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am335xevm can't emulate as u-disk

king liu
Prodigy 150 points


HI

AM335X EVM board can’t emulate as U-DISK after plug in OTG port to PC. and ADB function is workable.

so can you give me some information ?

  • 0
    TI__Guru**** 171041 points

    Do you have the g_mass_storage.ko gadget driver compiled and loaded?

  • 0 in reply to Bin Liu
    Prodigy 150 points

    hi

    bin liu

    i have compiled and loaded the g_mass_storage.ko ,and insmod g_mass_storage.ko file=/dev/block/vold/179:3  in the android console. And then the data disk can be expose as a removable media. But at this time ,the adb can not work.Becauset in the menuconfig ,we can not select  g_mass_storage and android_gadget simultaneously.

    And then ,i modify the kernel/drivers/usb/gadget/Kconfig file.

    config USB_G_ANDROID
            tristate "Android Gadget"

    compile the modules g_mass_storage.ko and the g_android.ko,and we can not insmod both of them simultaneously?

  • 0 in reply to king liu
    TI__Guru**** 171041 points

    No, you cannot load both simultaneously. I don't know much about the Android Gadget driver, but in general, only one gadget module can be loaded. Or g_multi.ko can be used if AOSP has patched g_multi to include the Android gadget. I just doubt it...