Register    Login    Forum    Search    FAQ

Board index » Software » Android




Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: Testing on Nexus5x
 Post Posted: Sun Feb 12, 2017 11:15 am 
Offline

Joined: Tue Sep 17, 2013 4:50 pm
Posts: 76
I happily tested the Android demo app on Nexus 5X running PureNexus based on Android N. :-)

The only problem I had was with permissions. I anticipated this kind of problem because Android is pretty picky on this (even if my phone is rooted) and was curious how Zwo worked around it (at first I was thinking they rewrote the drivers in Java with the API https://developer.android.com/guide/top ... /host.html, but this is actually native code). It manifested with an error in libusb, which neatly points to this kind of problems:

02-12 10:08:33.530 28213 28213 F DEBUG : Build fingerprint: 'google/bullhead/bullhead:7.1.1/NMF26F/3425388:user/release-keys'
02-12 10:08:33.530 28213 28213 F DEBUG : Revision: 'rev_1.0'
02-12 10:08:33.530 28213 28213 F DEBUG : ABI: 'arm64'
02-12 10:08:33.530 28213 28213 F DEBUG : pid: 28195, tid: 28211, name: Thread-5 >>> com.example.mycamera <<<
02-12 10:08:33.531 28213 28213 F DEBUG : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x4
02-12 10:08:33.531 28213 28213 F DEBUG : x0 0000000000000000 x1 0000000000000000 x2 0000007f10c8e804 x3 0000000000000000
02-12 10:08:33.531 28213 28213 F DEBUG : x4 0000000000000058 x5 8080808080808080 x6 0000007f2aeb915e x7 0000000000000008
02-12 10:08:33.531 28213 28213 F DEBUG : x8 0000000000000000 x9 0000000000000002 x10 0000000000000063 x11 0101010101010101
02-12 10:08:33.531 28213 28213 F DEBUG : x12 0000000000000000 x13 000000000ccccccc x14 000000008000002f x15 0000007f2b64a1e8
02-12 10:08:33.531 28213 28213 F DEBUG : x16 0000007f23a43158 x17 0000007f2963081c x18 0000000000000000 x19 0000007f10ca0008
02-12 10:08:33.531 28213 28213 F DEBUG : x20 0000007f10ca0000 x21 0000000000000001 x22 0000000000000000 x23 0000007f23a4e118
02-12 10:08:33.531 28213 28213 F DEBUG : x24 0000000000000000 x25 0000007f23a4df14 x26 cfb405e02d05008f x27 cfb405e02d05008f
02-12 10:08:33.531 28213 28213 F DEBUG : x28 0000000000000001 x29 0000007f29773460 x30 0000007f239f60cc
02-12 10:08:33.531 28213 28213 F DEBUG : sp 0000007f29773440 pc 0000007f29630830 pstate 0000000060000000
02-12 10:08:33.535 28213 28213 F DEBUG :
02-12 10:08:33.535 28213 28213 F DEBUG : backtrace:
02-12 10:08:33.535 28213 28213 F DEBUG : #00 pc 0000000000006830 /data/app/com.example.mycamera-1/lib/arm64/libusb-1.0.so (libusb_set_debug+20)
02-12 10:08:33.535 28213 28213 F DEBUG : #01 pc 000000000006f0c8 /data/app/com.example.mycamera-1/lib/arm64/libASICamera2.so (_ZN11CCameraBase10OpenCameraEi+72)
02-12 10:08:33.535 28213 28213 F DEBUG : #02 pc 000000000002422c /data/app/com.example.mycamera-1/lib/arm64/libASICamera2.so (ASIOpenCamera+1504)
02-12 10:08:33.535 28213 28213 F DEBUG : #03 pc 0000000000023ba4 /data/app/com.example.mycamera-1/lib/arm64/libASICamera2.so (ASIGetCameraProperty+180)
02-12 10:08:33.535 28213 28213 F DEBUG : #04 pc 0000000000002a70 /data/app/com.example.mycamera-1/lib/arm64/libzwo_camera.so (Java_com_zwo_ZwoCamera_getCameraProperty+64)
02-12 10:08:33.535 28213 28213 F DEBUG : #05 pc 0000000000404aa4 /data/app/com.example.mycamera-1/oat/arm64/base.odex (offset 0x3dc000)

The trick is putting SELinux in non enforcing mode, but then I make the usb devices word writable. With the ASI1600MC:

bullhead:/ # lsusb
Bus 001 Device 002: ID 14cd:8601
Bus 001 Device 001: ID 1d6b:0002
Bus 002 Device 001: ID 1d6b:0003
Bus 001 Device 007: ID 2109:2813
Bus 001 Device 005: ID 2109:0100
Bus 001 Device 008: ID 03c3:1601
bullhead:/ # cd /dev/bus/usb/001
bullhead:/dev/bus/usb/001 # chmod a+rw *
bullhead:/dev/bus/usb/001 # setenforce 0
bullhead:/dev/bus/usb/001 # echo 200 >/sys/module/usbcore/parameters/usbfs_memory_mb

I am pretty enthusiastic with this development. Not much because of Astro Imaging (the UI from the laptop is still better IMHO) but my plan is to used ASI Cameras for IR/UV photography, timelapse, median to have photos without people, etc. Doing that via the phone instead of laptop is super cool. :-)


Attachments:
P1040090.JPG
P1040090.JPG [ 109.9 KiB | Viewed 303 times ]
Top 
 Profile  
Reply with quote  
 Post subject: Re: Testing on Nexus5x
 Post Posted: Tue Feb 14, 2017 3:40 pm 
Offline

Joined: Tue Feb 14, 2017 5:26 am
Posts: 3
Thanks for your testing, We have tested the demo in some Android L and Android M devices with SELinux putting in enforcing mode successfully before, but Android N has more stringent security policies. I'm glad you have a "rooted" Android device so you can solve this problem. We will try to figure out a universal resolution of permission issues. A official release with better UI will be offered in the future.


Top 
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
 
Post new topic Reply to topic  [ 2 posts ] 

Board index » Software » Android


Who is online

Users browsing this forum: No registered users and 1 guest

 
 

 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to: