Hi Mark, On Monday 30 May 2016 19:42:06 Marc Anders wrote: > Hello, > > I am trying to port BlueZ to an Android 4.4.2 kernel. I followed the > instructions I found on the following site: > https://git.kernel.org/cgit/bluetooth/bluez.git/tree/android/README > > I have the project compiling and was able to flash to the board. When > the bluetooth system boots up however the Bluez system times out > during its init with the following error logs: > > 05-26 09:05:36.381 D/BlueZ ( 1828): > external/bluetooth/bluez/android/hal-bluetooth.c:open_bluetooth() > 05-26 09:05:36.381 D/BlueZ ( 1828): > external/bluetooth/bluez/android/hal-bluetooth.c:get_bluetooth_interface() > 05-26 09:05:36.401 D/BlueZ ( 1828): > external/bluetooth/bluez/android/hal-bluetooth.c:init() > 05-26 09:05:36.551 I/bluetoothd( 1893): Bluetooth daemon 5.39 > 05-26 09:05:36.551 I/bluetoothd( 1893): Starting SDP server > 05-26 09:05:36.551 I/bluetoothd( 1893): Bluetooth management interface > 1.3 initialized > 05-26 09:05:41.541 I/bluetoothd( 1893): Stopping SDP server > 05-26 09:05:41.541 I/bluetoothd( 1893): Exit > 05-26 09:05:46.431 E/BlueZ ( 1828): bluetoothd connect timeout > > Looking further into what is causing the bluetoothd to time out I've > found that calling poll() within the accept_connection() function > within hal-bluetooth.c is what causes this. Using the process > described in the above readme I did port over the new epoll_create1() > and ppoll() calls from > https://github.com/bluez-android/aosp_platform_bionic. I'm trying to > determine what the poll() function is calling out to that is causing > this to timeout. > > Any assistance is appreciated, bluetoothd from BlueZ for Android requires BT adapter to be ready before it is started. Typically on Android device this done by hciattach or brcm_patchram. To do this automatically I suggest to have hciattach service that is started is bluetoothd service is started. This should be enough since bluetoothd wait 5 seconds before shutting down. You can check at https://github.com/bluez-android how this was done for Nexus devices. ie. on property:init.svc.bluetoothd=running start hciattach on property:init.svc.bluetoothd=stopped stop hciattach -- pozdrawiam Szymon Janc -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
