libusb - Register accessory to android phone, but when communication is established I receive “No installed aps work with this USB accessory” -


i'm trying register custom accessory android phone (4.4.2, slimkat , cyanogen). use beagleboneblack in revision a5b running ubuntu kernel version 3.8.13 usb host. accesory recognized android device phone says "connected media device" , udev rules set in ubuntu. want register accessory via libusb-1.0 api. followed guide step 11: http://electronicdesign.com/embedded/develop-aoa-usb-accessories-android-based-systems. in detail, can

  • open host device on ubuntu , file handle
  • claim interface send device info (manufacturer, model, description, version, uri , serialnumber)
  • send request switch accessory mode
  • reassign device handle
  • reclaim device

now host device should ready communicate android device. @ time on phone message

"no installed aps work usb accessory. ..."

pops up.

my accessory-filter.xml android application looks like:

<?xml version="1.0" encoding="utf-8"?> <resources>     <usb-accessory         manufacturer="\\@4"         model="\\@4"         product-id="\\@4"         vendor-id="\\@4"         version="\\@4" /> </resources>

i imagine accessory-filter wrong, remember earlier projects vendor specific accessories, used way , had no problems. or error somewhere else? thank in advance support!


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