Hi,
Thank you very much for bearing with me.
Please make sure you read all the bytes from interrupt endpoint in multiples of
64.
Now that is a very interesting bit of information.
> lsusb -vvv will give info reagrding the size of interrupt
> endpoint descriptor.
I have attached my lsusb -vvv output and would appreciate help. I have so far
interpreted the report information given in these Stanzas:
>Item(Local ): Usage, data= [ 0x60 0x01 ] 352
> (null)
> Item(Main ): Input, data= [ 0x02 0x01 ] 258
> Data Variable Absolute No_Wrap Linear
>Buffered Bytes
> Item(Main ): End Collection, data=none
> Item(Local ): Usage, data= [ 0x61 ] 97
> (null)
> Item(Main ): Collection, data= [ 0x02 ] 2
> Logical
> Item(Global): Report ID, data= [ 0x42 ] 66
> Item(Global): Report Size, data= [ 0x08 ] 8
> Item(Global): Report Count, data= [ 0x0b 0x00 ] 11
So when I expect less than 11 bytes I read 11. Because I thought this was a
fixed size for the reportID given and some layer of the USB protocol would
require messages to be of these predefined sizes.
I do not pretend to understand this stuff, so I have extrapolated from
sending: I build my command in a buffer (the device has a command-protocol
inherited from the version connected by RS-232), then look up the ReportID
that is next larger than the packet. Pad the packet with zeroes to the size of
the report. Prepend the ReportID I found and send it.
And this has worked so far. The device acts on the commands I send, some of
them lead to physically noticeable results.
So I thought I'd do the same in reverse when reading the responses the device
is supposed to give to each command.
I would very much like to be corrected. I do have a sort-of-working kludge now
(I just go on reading repeatedly. After a number of INT_READ_FAILED and
TIMEOUTs it finally answers. Takes ages, but is not really a timing issue,
because if I wait for a long time before trying the problem is the same), but
doing it correctly would make me feel much much much better.
Ciao, MM
--
Marian Aldenhövel, Rosenhain 23, 53123 Bonn
http://www.marian-aldenhoevel.de
"I ran some quick calculations on it. He's about 80% on the right
track. That leaves him only 20% dead when he crashes." Bob C
Bus 001 Device 006: ID 0590:0034 Omron Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0590 Omron Corp.
idProduct 0x0034
bcdDevice 1.04
iManufacturer 1 OMRON Corporation
iProduct 4 V4KU-01JF-001
iSerial 3 420172
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 2 Default
bmAttributes 0xc0
Self Powered
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 337
Report Descriptor: (length is 337)
Item(Global): Usage Page, data= [ 0x00 0xff ] 65280
(null)
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Main ): Collection, data= [ 0x01 ] 1
Application
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Local ): Usage, data= [ 0x20 ] 32
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x03 0x00 ] 3
Item(Local ): Usage, data= [ 0x20 0x01 ] 288
(null)
Item(Main ): Output, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x21 ] 33
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x02 ] 2
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x0b 0x00 ] 11
Item(Local ): Usage, data= [ 0x21 0x01 ] 289
(null)
Item(Main ): Output, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x22 ] 34
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x03 ] 3
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x13 0x00 ] 19
Item(Local ): Usage, data= [ 0x22 0x01 ] 290
(null)
Item(Main ): Output, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x23 ] 35
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x04 ] 4
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x23 0x00 ] 35
Item(Local ): Usage, data= [ 0x23 0x01 ] 291
(null)
Item(Main ): Output, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x24 ] 36
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x05 ] 5
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x4b 0x00 ] 75
Item(Local ): Usage, data= [ 0x24 0x01 ] 292
(null)
Item(Main ): Output, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x25 ] 37
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x06 ] 6
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x8b 0x00 ] 139
Item(Local ): Usage, data= [ 0x25 0x01 ] 293
(null)
Item(Main ): Output, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x26 ] 38
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x07 ] 7
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x0b 0x01 ] 267
Item(Local ): Usage, data= [ 0x26 0x01 ] 294
(null)
Item(Main ): Output, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x27 ] 39
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x08 ] 8
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x73 0x01 ] 371
Item(Local ): Usage, data= [ 0x27 0x01 ] 295
(null)
Item(Main ): Output, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x28 ] 40
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x09 ] 9
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x13 0x08 ] 2067
Item(Local ): Usage, data= [ 0x28 0x01 ] 296
(null)
Item(Main ): Output, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x60 ] 96
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x41 ] 65
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x03 0x00 ] 3
Item(Local ): Usage, data= [ 0x60 0x01 ] 352
(null)
Item(Main ): Input, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x61 ] 97
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x42 ] 66
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x0b 0x00 ] 11
Item(Local ): Usage, data= [ 0x61 0x01 ] 353
(null)
Item(Main ): Input, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x62 ] 98
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x43 ] 67
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x13 0x00 ] 19
Item(Local ): Usage, data= [ 0x62 0x01 ] 354
(null)
Item(Main ): Input, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x63 ] 99
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x44 ] 68
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x23 0x00 ] 35
Item(Local ): Usage, data= [ 0x63 0x01 ] 355
(null)
Item(Main ): Input, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x64 ] 100
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x45 ] 69
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x4b 0x00 ] 75
Item(Local ): Usage, data= [ 0x64 0x01 ] 356
(null)
Item(Main ): Input, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x65 ] 101
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x46 ] 70
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x8b 0x00 ] 139
Item(Local ): Usage, data= [ 0x65 0x01 ] 357
(null)
Item(Main ): Input, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x66 ] 102
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x47 ] 71
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x0b 0x01 ] 267
Item(Local ): Usage, data= [ 0x66 0x01 ] 358
(null)
Item(Main ): Input, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x67 ] 103
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x48 ] 72
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x73 0x01 ] 371
Item(Local ): Usage, data= [ 0x67 0x01 ] 359
(null)
Item(Main ): Input, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Local ): Usage, data= [ 0x68 ] 104
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report ID, data= [ 0x49 ] 73
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0xf3 0x03 ] 1011
Item(Local ): Usage, data= [ 0x68 0x01 ] 360
(null)
Item(Main ): Input, data= [ 0x02 0x01 ] 258
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Buffered Bytes
Item(Main ): End Collection, data=none
Item(Main ): End Collection, data=none
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 20
Device Status: 0x0000
(Bus Powered)
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