Hi! I have five(!) USB cameras looking at five very boring pieces
of equipment (to make sure the equipment does not move).
The cameras are working fine, but I have trouble keeping track of
which camera corresponds to which /dev/videoX device. The order appears
to change from reboot to reboot, or when individual cameras are
disconnected and reconnected.
The cameras are plugged into an 8 port USB hub, so maybe there is a way
to find out which /dev/videoX device is on which hub port? Or maybe
each camera has a unique serial number that I can read?
Here is what I have in the /proc/bus/usb/devices and drivers:
# cat /proc/bus/usb/drivers
usbdevfs
hub
ov511
# cat /proc/bus/usb/devices
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 11/900 us ( 1%), #Int= 1, #Iso= 0
D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 0.00
S: Product=USB UHCI Root Hub
S: SerialNumber=b400
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=255ms
T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 28 Spd=12 MxCh= 7
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0451 ProdID=2077 Rev= 1.00
S: Product=General Purpose USB Hub
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl=255ms
T: Bus=01 Lev=02 Prnt=28 Port=00 Cnt=01 Dev#= 29 Spd=12 MxCh= 0
D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=05a9 ProdID=a511 Rev= 1.00
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 0 Ivl= 1ms
I: If#= 0 Alt= 1 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 33 Ivl= 1ms
I: If#= 0 Alt= 2 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 129 Ivl= 1ms
I: If#= 0 Alt= 3 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 257 Ivl= 1ms
I: If#= 0 Alt= 4 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 385 Ivl= 1ms
I: If#= 0 Alt= 5 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 513 Ivl= 1ms
I: If#= 0 Alt= 6 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 769 Ivl= 1ms
I: If#= 0 Alt= 7 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 961 Ivl= 1ms
T: Bus=01 Lev=02 Prnt=28 Port=01 Cnt=02 Dev#= 30 Spd=12 MxCh= 0
D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=05a9 ProdID=a511 Rev= 1.00
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 0 Ivl= 1ms
I: If#= 0 Alt= 1 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 33 Ivl= 1ms
I: If#= 0 Alt= 2 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 129 Ivl= 1ms
I: If#= 0 Alt= 3 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 257 Ivl= 1ms
I: If#= 0 Alt= 4 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 385 Ivl= 1ms
I: If#= 0 Alt= 5 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 513 Ivl= 1ms
I: If#= 0 Alt= 6 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 769 Ivl= 1ms
I: If#= 0 Alt= 7 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 961 Ivl= 1ms
T: Bus=01 Lev=02 Prnt=28 Port=02 Cnt=03 Dev#= 31 Spd=12 MxCh= 0
D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=05a9 ProdID=a511 Rev= 1.00
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 0 Ivl= 1ms
I: If#= 0 Alt= 1 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 33 Ivl= 1ms
I: If#= 0 Alt= 2 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 129 Ivl= 1ms
I: If#= 0 Alt= 3 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 257 Ivl= 1ms
I: If#= 0 Alt= 4 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 385 Ivl= 1ms
I: If#= 0 Alt= 5 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 513 Ivl= 1ms
I: If#= 0 Alt= 6 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 769 Ivl= 1ms
I: If#= 0 Alt= 7 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 961 Ivl= 1ms
T: Bus=01 Lev=02 Prnt=28 Port=03 Cnt=04 Dev#= 32 Spd=12 MxCh= 0
D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=05a9 ProdID=a511 Rev= 1.00
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 0 Ivl= 1ms
I: If#= 0 Alt= 1 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 33 Ivl= 1ms
I: If#= 0 Alt= 2 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 129 Ivl= 1ms
I: If#= 0 Alt= 3 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 257 Ivl= 1ms
I: If#= 0 Alt= 4 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 385 Ivl= 1ms
I: If#= 0 Alt= 5 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 513 Ivl= 1ms
I: If#= 0 Alt= 6 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 769 Ivl= 1ms
I: If#= 0 Alt= 7 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 961 Ivl= 1ms
T: Bus=01 Lev=02 Prnt=28 Port=04 Cnt=05 Dev#= 33 Spd=12 MxCh= 0
D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=05a9 ProdID=a511 Rev= 1.00
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 0 Ivl= 1ms
I: If#= 0 Alt= 1 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 33 Ivl= 1ms
I: If#= 0 Alt= 2 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 129 Ivl= 1ms
I: If#= 0 Alt= 3 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 257 Ivl= 1ms
I: If#= 0 Alt= 4 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 385 Ivl= 1ms
I: If#= 0 Alt= 5 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 513 Ivl= 1ms
I: If#= 0 Alt= 6 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 769 Ivl= 1ms
I: If#= 0 Alt= 7 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=ov511
E: Ad=81(I) Atr=01(Isoc) MxPS= 961 Ivl= 1ms
--
Konstantin Olchanski
Email: [EMAIL PROTECTED]
Snail mail: 4004 Wesbrook Mall, TRIUMF, Vancouver, B.C., V6T 2A3, Canada
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