Experimental Physics and
Industrial Control System

Jörn Dreyer via Tech-talk <tech-talk at aps.anl.gov> · Thu, 27 Apr 2023 14:00:22 +0200

Hello,

I have a problem using a PrincetonInstruments PIXIS camera with ADPICam. My 
IOC hangs in the Line PICamConfig("PICAM", 20, 0x5000000, 2, 0x5000000).

The out put of strrace shows:

openat(AT_FDCWD, "/dev/bus/usb/001/004", O_RDWR|O_CLOEXEC) = 23
ioctl(23, USBDEVFS_GET_CAPABILITIES, 0x5621d1320e8c) = 0
ioctl(23, USBDEVFS_CLAIMINTERFACE, 0x7ffd05254f24) = 0
timerfd_settime(13, TFD_TIMER_ABSTIME, {it_interval={tv_sec=0, tv_nsec=0}, 
it_value={tv_sec=8721277, tv_nsec=456792680}}, NULL) = 0
ioctl(23, USBDEVFS_SUBMITURB, 0x5621d130e4e0) = 0
ioctl(23, USBDEVFS_SUBMITURB, 0x5621d13287e0) = 0
read(12, "\1\0\0\0\0\0\0\0", 8)         = 8
poll([{fd=12, events=POLLIN}, {fd=13, events=POLLIN}, {fd=23, 
events=POLLOUT}], 3, 60000) = 1 ([{fd=23, revents=POLLOUT}])
ioctl(23, USBDEVFS_REAPURBNDELAY, 0x7ffd05254bb0) = 0
ioctl(23, USBDEVFS_REAPURBNDELAY, 0x7ffd05254bb0) = -1 EAGAIN (Resource 
temporarily unavailable)

That tells me, that it finds the camera but has somehow problems to 
communicate with it. Looking with the debugger where it hags, reveals that 
this happens already in the call to Picam_InitializeLibrary().
I have setup an udev rules file with the following content:

ATTRS{idVendor}=="0bd7", ATTRS{idProduct}=="a026", MODE="0666", 
GROUP="plugdev"

When I plugin the camera it gets detected by the system::
[8720825.614808] usb 1-10: config 1 interface 0 altsetting 0 bulk endpoint 
0x81 has invalid maxpacket 64
[8720825.614811] usb 1-10: config 1 interface 0 altsetting 0 bulk endpoint 0x1 
has invalid maxpacket 64
[8720825.614978] usb 1-10: config 1 interface 0 altsetting 0 bulk endpoint 
0x81 has invalid maxpacket 64
[8720825.614980] usb 1-10: config 1 interface 0 altsetting 0 bulk endpoint 0x1 
has invalid maxpacket 64
[8720825.615137] usb 1-10: New USB device found, idVendor=0bd7, 
idProduct=a026, bcdDevice= 0.00
[8720825.615139] usb 1-10: New USB device strings: Mfr=1, Product=2, 
SerialNumber=0
[8720825.615140] usb 1-10: Product: PIXIS V3.6 
[8720825.615141] usb 1-10: Manufacturer: Princeton Instruments

I tried with different USB ports, optical extender etc. With another software 
that I have the camera works perfectly delivering images. But EPICS somehow 
has a problem with the device. I am using areaDetector R3-12-1.

Any ideas whet could be causing this? It looks like some accessrights are not 
set properly, but I have no clue where.

Regards

Jörn

-- 
Dr. Jörn Dreyer
HIBEF DAQ + Controls
Institut für Strahlenpysik
Helmholtz - Zentrum Dresden - Rossendorf

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System