BeginQHYCCDLive() does not work for QHY5IIL-M

[ykm2006]

The demo program initandcapture.cpp in demo/QHY5IIL-M does not work. Followings are response:

$ ./initandcapturetest
Init SDK success!
Yes!Found QHYCCD,the num is 1
camid is :QHY5LII-M-6037d510f33c7353
Open QHY5LII-M success!
Init QHY5LII-M success!
Set QHY5LII-M resolution success!
Begin Live Video success!

and then it stalls.

Looking into inside the library code, it looks like there is infinity loop in QHYCAM::readUSB2BForQHY5IISeries() in qhycam.cpp. No further investigation is done.

Environment:
host: Ubuntu 14.04 amd64 on VirtualBox 4.3.14.r95030

[ykm2006]

I attempted to reduce resolution from 1280x960 to 640x480 and set the USB traffic to 1000 in initandcapture.cpp then the capture was successful.

I will attempt to issue a pull request to show you what was done in initandcapture.cpp, then could you please investigate the root cause?

[qhyccd-lzr]

it is working now.please try.

[ykm2006]

Thanks, I will give a try.

[ykm2006]

Unfortunately it still does not work with my environment. With the VirtualBox environment, the sample code SingleFrameSampletest.cpp recently you provided got some fatal errors. Following is the result:

ykm2006@taurus:~/Build/QHYCCD_Linux/sample$ ./SingleFrameSampletest 
Init SDK success!
Yes!Found QHYCCD,the num is 1 
connected to the first camera from the list,id is QHY5LII-M-6037d510f33c7353
Open QHYCCD success!
Init QHYCCD success!
GetQHYCCDChipInfo success!
CCD/CMOS chip information:
Chip width 4.800000 mm,Chip height 3.600000 mm
Chip pixel width 3.750000 um,Chip pixel height 3.750000 um
Chip Max Resolution is 1280 x 960,depth is 8
SetQHYCCDResolution success!
SetQHYCCDBinMode success!
2015-08-14 16:55:30.341 LOG_FATAL libusb_bulk_transfer iTXD (qhycam.cpp):634 
2015-08-14 16:55:30.342 LOG_FATAL libusb_bulk_transfer iTXD (qhycam.cpp):634 
ExpQHYCCDSingleFrame success!
2015-08-14 16:55:30.543 LOG_FATAL libusb_bulk_transfer iTXD (qhycam.cpp):634 
2015-08-14 16:55:30.716 LOG_FATAL BadFrames=1 CurrentFrameSize=998405 (cmosdll.cpp):160 
2015-08-14 16:55:31.260 LOG_FATAL BadFrames=2 CurrentFrameSize=1072896 (cmosdll.cpp):160 
2015-08-14 16:55:31.536 LOG_FATAL BadFrames=3 CurrentFrameSize=1070610 (cmosdll.cpp):160 
2015-08-14 16:55:31.814 LOG_FATAL BadFrames=4 CurrentFrameSize=1063936 (cmosdll.cpp):160 
2015-08-14 16:55:32.087 LOG_FATAL BadFrames=5 CurrentFrameSize=1118289 (cmosdll.cpp):160 
2015-08-14 16:55:32.370 LOG_FATAL BadFrames=6 CurrentFrameSize=1039616 (cmosdll.cpp):160 
^C
ykm2006@taurus:~/Build/QHYCCD_Linux/sample$ 

Host environment is as follows:
Ubuntu 15.04 amd64 on VirtualBox 5.0.0.r101573

I attempted the same code on my IC8300 Linux and it got different result; I got segfault. I reported in issue #13 then please also take a look at it. For me #13 has higher priority since my current project is on IC8300 environment.

[GuLinux]

I would try on a real machine first, in my experience I always had problems with virtual environments and USB cameras, both with windows and linux guests.

[ykm2006]

Thanks GuLinux for the suggestion. I agree that virtual environment has speed performance issues with USB transmission, then this particular issue may come from it. Actually I was testing the latest library 0.1.6 with a real machine (architecture is not Intel though), then found the issue #13. I wanted to test with Intel arch then found this issue. As I noted my priority is on #13 right now, then I wanted to report this as a followup experiment to what lzr has notified me that it is working now.

[qhyccd-lzr]

hi
is there any update?