Bezüglich Hans Petter Selasky's Nachricht vom 17.09.2013 10:57 (localtime): > On 09/17/13 10:47, Lev Serebryakov wrote: >> Hello, Harald. >> You wrote 17 сентября 2013 г., 12:46:25: >> >> HS> The Y is the device addr @ bus #X. >> Oh :) >> >> HS> Same posted some seconds ago :-) >> Yep, exactly the same pattern. >> > > > Hi, > > Could you show the configuration descriptor for your device? > > usbconfig -d X.Y dump_curr_config_desc
Shall we switch to non-list-comm?
Again, thanks for your help!
tk:/usr/home/admin/#:21 usbconfig -d 1.4 dump_curr_config_desc
ugen1.4: <product 0x7840 vendor 0x9710> at usbus1, cfg=0 md=HOST
spd=HIGH (480Mbps) pwr=ON (100mA)
Configuration index 0
bLength = 0x0009
bDescriptorType = 0x0002
wTotalLength = 0x0051
bNumInterfaces = 0x0001
bConfigurationValue = 0x0001
iConfiguration = 0x0000 <no string>
bmAttributes = 0x00a0
bMaxPower = 0x0032
Interface 0
bLength = 0x0009
bDescriptorType = 0x0004
bInterfaceNumber = 0x0000
bAlternateSetting = 0x0000
bNumEndpoints = 0x0009
bInterfaceClass = 0x00ff
bInterfaceSubClass = 0x0000
bInterfaceProtocol = 0x00ff
iInterface = 0x0000 <no string>
Endpoint 0
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x0081 <IN>
bmAttributes = 0x0002 <BULK>
wMaxPacketSize = 0x0200
bInterval = 0x00ff
bRefresh = 0x0000
bSynchAddress = 0x0000
Endpoint 1
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x0002 <OUT>
bmAttributes = 0x0002 <BULK>
wMaxPacketSize = 0x0200
bInterval = 0x00ff
bRefresh = 0x0000
bSynchAddress = 0x0000
Endpoint 2
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x0083 <IN>
bmAttributes = 0x0002 <BULK>
wMaxPacketSize = 0x0200
bInterval = 0x00ff
bRefresh = 0x0000
bSynchAddress = 0x0000
Endpoint 3
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x0004 <OUT>
bmAttributes = 0x0002 <BULK>
wMaxPacketSize = 0x0200
bInterval = 0x00ff
bRefresh = 0x0000
bSynchAddress = 0x0000
Endpoint 4
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x0085 <IN>
bmAttributes = 0x0002 <BULK>
wMaxPacketSize = 0x0200
bInterval = 0x00ff
bRefresh = 0x0000
bSynchAddress = 0x0000
Endpoint 5
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x0006 <OUT>
bmAttributes = 0x0002 <BULK>
wMaxPacketSize = 0x0200
bInterval = 0x00ff
bRefresh = 0x0000
bSynchAddress = 0x0000
Endpoint 6
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x0087 <IN>
bmAttributes = 0x0002 <BULK>
wMaxPacketSize = 0x0200
bInterval = 0x00ff
bRefresh = 0x0000
bSynchAddress = 0x0000
Endpoint 7
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x0008 <OUT>
bmAttributes = 0x0002 <BULK>
wMaxPacketSize = 0x0200
bInterval = 0x00ff
bRefresh = 0x0000
bSynchAddress = 0x0000
Endpoint 8
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x0089 <IN>
bmAttributes = 0x0003 <INTERRUPT>
wMaxPacketSize = 0x0010
bInterval = 0x0005
bRefresh = 0x0000
bSynchAddress = 0x0000
>
> The interrupt endpoint in question can be throttled by the USB stack,
> if the latency of these events are not important to your application.
>
Hmm, in my case, this 4-port-serial-USB-hub will be used as console
concentrator. So most time it's doing nothing, just feeding tmux with
consoles output. What latency are we talking about? Less than a some
milliseconds should be fine.
What I'm curious about is why my prolific USB-serial converter doesn't
generate these high irqs.
Thanks,
-Harry
signature.asc
Description: OpenPGP digital signature
