| 1 |
Mick <michaelkintzios@×××××.com> [15-05-14 08:00]: |
| 2 |
> On Thursday 14 May 2015 04:45:38 Meino.Cramer@×××.de wrote: |
| 3 |
> > Hi, |
| 4 |
> > |
| 5 |
> > I have a problem with some kind of a lokal net connection (ethernet |
| 6 |
> > over USB): |
| 7 |
> |
| 8 |
> I think that the problem is not network related, but USB rules related. |
| 9 |
> Please see below. |
| 10 |
> |
| 11 |
> |
| 12 |
> > Current handling is as follows: |
| 13 |
> > I boot my Gentoo-Linux PC, which connects to my Fritz!Box, collect |
| 14 |
> > EMail etc...works fine so far. |
| 15 |
> > Then I connect an embedded system (Arietta G25 |
| 16 |
> > www.acmesystems.it/arietta) to the usb port and wait until this |
| 17 |
> > little thing has booted. |
| 18 |
> > On my Linux PC I do the following then (as root): |
| 19 |
> > |
| 20 |
> > ifconfig usb0 192.168.10.1 up |
| 21 |
> > echo 1 >! /proc/sys/net/ipv4/ip_forward |
| 22 |
> > iptables -A FORWARD -i eth1 -j ACCEPT |
| 23 |
> > modprobe ip_tables |
| 24 |
> > modprobe ip_conntrack |
| 25 |
> > iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE |
| 26 |
> > ssh -t root@ariettaa abduco -A root |
| 27 |
> > |
| 28 |
> > (I real life I have two Ariettas which I connect to the |
| 29 |
> > PC the same time with two different IP-addresses and two |
| 30 |
> > different USB-ports) |
| 31 |
> > |
| 32 |
> > This connects me finally to the Arietta, which do ethernet over USB. |
| 33 |
> > I put the commands into a script, so not too much hassle here. |
| 34 |
> > |
| 35 |
> > But! |
| 36 |
> > On the Arietta I also installed Gentoo. An update, especially |
| 37 |
> > when it includes gcc can take up to three days (I tried |
| 38 |
> > crosscompilation and some other construction and I am currently |
| 39 |
> > most happiest (sounds a litte too much like 'german english'...;) |
| 40 |
> > with this). |
| 41 |
> > So I first fetch all needed files and then restart the update |
| 42 |
> > and detach from the terminal. |
| 43 |
> > |
| 44 |
> > Now the problem: |
| 45 |
> > When I shutdown the PC, which needs not to run all the time, and |
| 46 |
> > restart it later again I am no longer able to connect to the Arietta |
| 47 |
> > with the steps described above. All needed modules are loaded while |
| 48 |
> > booting the PC and ifplugd is installed on the Arietta. |
| 49 |
> > |
| 50 |
> > Unfortunately I have not found any differences of the USB interface, |
| 51 |
> > which would make it possible to handle the Ariettas via udev. |
| 52 |
> |
| 53 |
> Have you used 'udevadm monitor' to check how your USB device is recognised? |
| 54 |
> Each time it will be a different host & target and this is your problem. |
| 55 |
> |
| 56 |
> |
| 57 |
> > How can I make a reconnect after rebooting my PC possible every time? |
| 58 |
> |
| 59 |
> I think that the solution is to create a udev rule which will identify your |
| 60 |
> arietta interface when plugged in the PC and run the necessary script from |
| 61 |
> there on. |
| 62 |
> |
| 63 |
> Have a look here for persistent device naming: |
| 64 |
> |
| 65 |
> https://wiki.gentoo.org/wiki/Udev |
| 66 |
> |
| 67 |
> -- |
| 68 |
> Regards, |
| 69 |
> Mick |
| 70 |
|
| 71 |
Hi Mick, |
| 72 |
|
| 73 |
This is what udevadm monitor prints, when I unplug both Ariettas |
| 74 |
simultanously: |
| 75 |
solfire:/home/mccramer>udevadm monitor |
| 76 |
monitor will print the received events for: |
| 77 |
UDEV - the event which udev sends out after rule processing |
| 78 |
KERNEL - the kernel uevent |
| 79 |
|
| 80 |
KERNEL[13781.884965] remove /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1/queues/rx-0 (queues) |
| 81 |
KERNEL[13781.885027] remove /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1/queues/tx-0 (queues) |
| 82 |
KERNEL[13781.885067] remove /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1 (net) |
| 83 |
UDEV [13781.886418] remove /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1/queues/rx-0 (queues) |
| 84 |
KERNEL[13781.889122] remove /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0 (usb) |
| 85 |
KERNEL[13781.889194] remove /devices/pci0000:00/0000:00:13.2/usb4/4-4 (usb) |
| 86 |
UDEV [13781.902185] remove /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1/queues/tx-0 (queues) |
| 87 |
UDEV [13781.908021] remove /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1 (net) |
| 88 |
UDEV [13781.908429] remove /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0 (usb) |
| 89 |
UDEV [13781.919474] remove /devices/pci0000:00/0000:00:13.2/usb4/4-4 (usb) |
| 90 |
KERNEL[13781.993142] remove /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0/queues/rx-0 (queues) |
| 91 |
KERNEL[13781.993182] remove /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0/queues/tx-0 (queues) |
| 92 |
KERNEL[13781.993211] remove /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0 (net) |
| 93 |
UDEV [13781.993928] remove /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0/queues/rx-0 (queues) |
| 94 |
UDEV [13781.994215] remove /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0/queues/tx-0 (queues) |
| 95 |
KERNEL[13781.998111] remove /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0 (usb) |
| 96 |
KERNEL[13781.998170] remove /devices/pci0000:00/0000:00:13.2/usb4/4-5 (usb) |
| 97 |
UDEV [13782.000177] remove /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0 (net) |
| 98 |
UDEV [13782.000767] remove /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0 (usb) |
| 99 |
UDEV [13782.013093] remove /devices/pci0000:00/0000:00:13.2/usb4/4-5 (usb) |
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|
| 101 |
|
| 102 |
This is printed, when I connect the first Arietta to the PC: |
| 103 |
|
| 104 |
monitor will print the received events for: |
| 105 |
UDEV - the event which udev sends out after rule processing |
| 106 |
KERNEL - the kernel uevent |
| 107 |
|
| 108 |
KERNEL[14000.140611] add /devices/pci0000:00/0000:00:13.2/usb4/4-5 (usb) |
| 109 |
KERNEL[14000.141572] add /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0 (usb) |
| 110 |
KERNEL[14000.141967] add /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0 (net) |
| 111 |
KERNEL[14000.142000] add /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0/queues/rx-0 (queues) |
| 112 |
KERNEL[14000.142046] add /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0/queues/tx-0 (queues) |
| 113 |
UDEV [14000.162311] add /devices/pci0000:00/0000:00:13.2/usb4/4-5 (usb) |
| 114 |
UDEV [14000.163727] add /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0 (usb) |
| 115 |
UDEV [14000.170206] add /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0 (net) |
| 116 |
UDEV [14000.170572] add /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0/queues/rx-0 (queues) |
| 117 |
UDEV [14000.185482] add /devices/pci0000:00/0000:00:13.2/usb4/4-5/4-5:1.0/net/usb0/queues/tx-0 (queues |
| 118 |
|
| 119 |
|
| 120 |
This is printed, when I connect the second Arietta to the PC: |
| 121 |
|
| 122 |
monitor will print the received events for: |
| 123 |
UDEV - the event which udev sends out after rule processing |
| 124 |
KERNEL - the kernel uevent |
| 125 |
|
| 126 |
KERNEL[14108.192714] add /devices/pci0000:00/0000:00:13.2/usb4/4-4 (usb) |
| 127 |
KERNEL[14108.193781] add /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0 (usb) |
| 128 |
KERNEL[14108.194211] add /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1 (net) |
| 129 |
KERNEL[14108.194247] add /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1/queues/rx-0 (queues) |
| 130 |
KERNEL[14108.194269] add /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1/queues/tx-0 (queues) |
| 131 |
UDEV [14108.211967] add /devices/pci0000:00/0000:00:13.2/usb4/4-4 (usb) |
| 132 |
UDEV [14108.213327] add /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0 (usb) |
| 133 |
UDEV [14108.217344] add /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1 (net) |
| 134 |
UDEV [14108.217615] add /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1/queues/rx-0 (queues) |
| 135 |
UDEV [14108.237237] add /devices/pci0000:00/0000:00:13.2/usb4/4-4/4-4:1.0/net/usb1/queues/tx-0 (queues) |
| 136 |
|
| 137 |
|
| 138 |
The assigment to certain USB ports may vary from time to time. |
| 139 |
|
| 140 |
|
| 141 |
This is what lsusb prints for both devices |
| 142 |
|
| 143 |
|
| 144 |
Bus 004 Device 007: ID 0525:a4a2 Netchip Technology, Inc. Linux-USB Ethernet/RNDIS Gadget |
| 145 |
Device Descriptor: |
| 146 |
bLength 18 |
| 147 |
bDescriptorType 1 |
| 148 |
bcdUSB 2.00 |
| 149 |
bDeviceClass 2 Communications |
| 150 |
bDeviceSubClass 0 |
| 151 |
bDeviceProtocol 0 |
| 152 |
bMaxPacketSize0 64 |
| 153 |
idVendor 0x0525 Netchip Technology, Inc. |
| 154 |
idProduct 0xa4a2 Linux-USB Ethernet/RNDIS Gadget |
| 155 |
bcdDevice 4.00 |
| 156 |
iManufacturer 1 Linux 4.0.1-20150414.001 with atmel_usba_udc |
| 157 |
iProduct 2 RNDIS/Ethernet Gadget |
| 158 |
iSerial 0 |
| 159 |
bNumConfigurations 2 |
| 160 |
Configuration Descriptor: |
| 161 |
bLength 9 |
| 162 |
bDescriptorType 2 |
| 163 |
wTotalLength 75 |
| 164 |
bNumInterfaces 2 |
| 165 |
bConfigurationValue 2 |
| 166 |
iConfiguration 0 |
| 167 |
bmAttributes 0xc0 |
| 168 |
Self Powered |
| 169 |
MaxPower 2mA |
| 170 |
Interface Association: |
| 171 |
bLength 8 |
| 172 |
bDescriptorType 11 |
| 173 |
bFirstInterface 0 |
| 174 |
bInterfaceCount 2 |
| 175 |
bFunctionClass 2 Communications |
| 176 |
bFunctionSubClass 6 Ethernet Networking |
| 177 |
bFunctionProtocol 0 |
| 178 |
iFunction 6 RNDIS |
| 179 |
Interface Descriptor: |
| 180 |
bLength 9 |
| 181 |
bDescriptorType 4 |
| 182 |
bInterfaceNumber 0 |
| 183 |
bAlternateSetting 0 |
| 184 |
bNumEndpoints 1 |
| 185 |
bInterfaceClass 2 Communications |
| 186 |
bInterfaceSubClass 2 Abstract (modem) |
| 187 |
bInterfaceProtocol 255 Vendor Specific (MSFT RNDIS?) |
| 188 |
iInterface 4 RNDIS Communications Control |
| 189 |
CDC Header: |
| 190 |
bcdCDC 1.10 |
| 191 |
CDC Call Management: |
| 192 |
bmCapabilities 0x00 |
| 193 |
bDataInterface 1 |
| 194 |
CDC ACM: |
| 195 |
bmCapabilities 0x00 |
| 196 |
CDC Union: |
| 197 |
bMasterInterface 0 |
| 198 |
bSlaveInterface 1 |
| 199 |
Endpoint Descriptor: |
| 200 |
bLength 7 |
| 201 |
bDescriptorType 5 |
| 202 |
bEndpointAddress 0x83 EP 3 IN |
| 203 |
bmAttributes 3 |
| 204 |
Transfer Type Interrupt |
| 205 |
Synch Type None |
| 206 |
Usage Type Data |
| 207 |
wMaxPacketSize 0x0008 1x 8 bytes |
| 208 |
bInterval 32 |
| 209 |
Interface Descriptor: |
| 210 |
bLength 9 |
| 211 |
bDescriptorType 4 |
| 212 |
bInterfaceNumber 1 |
| 213 |
bAlternateSetting 0 |
| 214 |
bNumEndpoints 2 |
| 215 |
bInterfaceClass 10 CDC Data |
| 216 |
bInterfaceSubClass 0 |
| 217 |
bInterfaceProtocol 0 |
| 218 |
iInterface 5 RNDIS Ethernet Data |
| 219 |
Endpoint Descriptor: |
| 220 |
bLength 7 |
| 221 |
bDescriptorType 5 |
| 222 |
bEndpointAddress 0x81 EP 1 IN |
| 223 |
bmAttributes 2 |
| 224 |
Transfer Type Bulk |
| 225 |
Synch Type None |
| 226 |
Usage Type Data |
| 227 |
wMaxPacketSize 0x0040 1x 64 bytes |
| 228 |
bInterval 0 |
| 229 |
Endpoint Descriptor: |
| 230 |
bLength 7 |
| 231 |
bDescriptorType 5 |
| 232 |
bEndpointAddress 0x02 EP 2 OUT |
| 233 |
bmAttributes 2 |
| 234 |
Transfer Type Bulk |
| 235 |
Synch Type None |
| 236 |
Usage Type Data |
| 237 |
wMaxPacketSize 0x0040 1x 64 bytes |
| 238 |
bInterval 0 |
| 239 |
Configuration Descriptor: |
| 240 |
bLength 9 |
| 241 |
bDescriptorType 2 |
| 242 |
wTotalLength 32 |
| 243 |
bNumInterfaces 1 |
| 244 |
bConfigurationValue 1 |
| 245 |
iConfiguration 0 |
| 246 |
bmAttributes 0xc0 |
| 247 |
Self Powered |
| 248 |
MaxPower 2mA |
| 249 |
Interface Descriptor: |
| 250 |
bLength 9 |
| 251 |
bDescriptorType 4 |
| 252 |
bInterfaceNumber 0 |
| 253 |
bAlternateSetting 0 |
| 254 |
bNumEndpoints 2 |
| 255 |
bInterfaceClass 2 Communications |
| 256 |
bInterfaceSubClass 12 Ethernet Emulation |
| 257 |
bInterfaceProtocol 7 Ethernet Emulation (EEM) |
| 258 |
iInterface 8 CDC Ethernet Emulation Model (EEM) |
| 259 |
Endpoint Descriptor: |
| 260 |
bLength 7 |
| 261 |
bDescriptorType 5 |
| 262 |
bEndpointAddress 0x81 EP 1 IN |
| 263 |
bmAttributes 2 |
| 264 |
Transfer Type Bulk |
| 265 |
Synch Type None |
| 266 |
Usage Type Data |
| 267 |
wMaxPacketSize 0x0040 1x 64 bytes |
| 268 |
bInterval 0 |
| 269 |
Endpoint Descriptor: |
| 270 |
bLength 7 |
| 271 |
bDescriptorType 5 |
| 272 |
bEndpointAddress 0x02 EP 2 OUT |
| 273 |
bmAttributes 2 |
| 274 |
Transfer Type Bulk |
| 275 |
Synch Type None |
| 276 |
Usage Type Data |
| 277 |
wMaxPacketSize 0x0040 1x 64 bytes |
| 278 |
bInterval 0 |
| 279 |
Device Qualifier (for other device speed): |
| 280 |
bLength 10 |
| 281 |
bDescriptorType 6 |
| 282 |
bcdUSB 2.00 |
| 283 |
bDeviceClass 2 Communications |
| 284 |
bDeviceSubClass 0 |
| 285 |
bDeviceProtocol 0 |
| 286 |
bMaxPacketSize0 64 |
| 287 |
bNumConfigurations 2 |
| 288 |
Device Status: 0x0001 |
| 289 |
Self Powered |
| 290 |
|
| 291 |
Bus 004 Device 008: ID 0525:a4a2 Netchip Technology, Inc. Linux-USB Ethernet/RNDIS Gadget |
| 292 |
Device Descriptor: |
| 293 |
bLength 18 |
| 294 |
bDescriptorType 1 |
| 295 |
bcdUSB 2.00 |
| 296 |
bDeviceClass 2 Communications |
| 297 |
bDeviceSubClass 0 |
| 298 |
bDeviceProtocol 0 |
| 299 |
bMaxPacketSize0 64 |
| 300 |
idVendor 0x0525 Netchip Technology, Inc. |
| 301 |
idProduct 0xa4a2 Linux-USB Ethernet/RNDIS Gadget |
| 302 |
bcdDevice 4.00 |
| 303 |
iManufacturer 1 Linux 4.0.1-20150414.001 with atmel_usba_udc |
| 304 |
iProduct 2 RNDIS/Ethernet Gadget |
| 305 |
iSerial 0 |
| 306 |
bNumConfigurations 2 |
| 307 |
Configuration Descriptor: |
| 308 |
bLength 9 |
| 309 |
bDescriptorType 2 |
| 310 |
wTotalLength 75 |
| 311 |
bNumInterfaces 2 |
| 312 |
bConfigurationValue 2 |
| 313 |
iConfiguration 0 |
| 314 |
bmAttributes 0xc0 |
| 315 |
Self Powered |
| 316 |
MaxPower 2mA |
| 317 |
Interface Association: |
| 318 |
bLength 8 |
| 319 |
bDescriptorType 11 |
| 320 |
bFirstInterface 0 |
| 321 |
bInterfaceCount 2 |
| 322 |
bFunctionClass 2 Communications |
| 323 |
bFunctionSubClass 6 Ethernet Networking |
| 324 |
bFunctionProtocol 0 |
| 325 |
iFunction 6 RNDIS |
| 326 |
Interface Descriptor: |
| 327 |
bLength 9 |
| 328 |
bDescriptorType 4 |
| 329 |
bInterfaceNumber 0 |
| 330 |
bAlternateSetting 0 |
| 331 |
bNumEndpoints 1 |
| 332 |
bInterfaceClass 2 Communications |
| 333 |
bInterfaceSubClass 2 Abstract (modem) |
| 334 |
bInterfaceProtocol 255 Vendor Specific (MSFT RNDIS?) |
| 335 |
iInterface 4 RNDIS Communications Control |
| 336 |
CDC Header: |
| 337 |
bcdCDC 1.10 |
| 338 |
CDC Call Management: |
| 339 |
bmCapabilities 0x00 |
| 340 |
bDataInterface 1 |
| 341 |
CDC ACM: |
| 342 |
bmCapabilities 0x00 |
| 343 |
CDC Union: |
| 344 |
bMasterInterface 0 |
| 345 |
bSlaveInterface 1 |
| 346 |
Endpoint Descriptor: |
| 347 |
bLength 7 |
| 348 |
bDescriptorType 5 |
| 349 |
bEndpointAddress 0x83 EP 3 IN |
| 350 |
bmAttributes 3 |
| 351 |
Transfer Type Interrupt |
| 352 |
Synch Type None |
| 353 |
Usage Type Data |
| 354 |
wMaxPacketSize 0x0008 1x 8 bytes |
| 355 |
bInterval 32 |
| 356 |
Interface Descriptor: |
| 357 |
bLength 9 |
| 358 |
bDescriptorType 4 |
| 359 |
bInterfaceNumber 1 |
| 360 |
bAlternateSetting 0 |
| 361 |
bNumEndpoints 2 |
| 362 |
bInterfaceClass 10 CDC Data |
| 363 |
bInterfaceSubClass 0 |
| 364 |
bInterfaceProtocol 0 |
| 365 |
iInterface 5 RNDIS Ethernet Data |
| 366 |
Endpoint Descriptor: |
| 367 |
bLength 7 |
| 368 |
bDescriptorType 5 |
| 369 |
bEndpointAddress 0x81 EP 1 IN |
| 370 |
bmAttributes 2 |
| 371 |
Transfer Type Bulk |
| 372 |
Synch Type None |
| 373 |
Usage Type Data |
| 374 |
wMaxPacketSize 0x0040 1x 64 bytes |
| 375 |
bInterval 0 |
| 376 |
Endpoint Descriptor: |
| 377 |
bLength 7 |
| 378 |
bDescriptorType 5 |
| 379 |
bEndpointAddress 0x02 EP 2 OUT |
| 380 |
bmAttributes 2 |
| 381 |
Transfer Type Bulk |
| 382 |
Synch Type None |
| 383 |
Usage Type Data |
| 384 |
wMaxPacketSize 0x0040 1x 64 bytes |
| 385 |
bInterval 0 |
| 386 |
Configuration Descriptor: |
| 387 |
bLength 9 |
| 388 |
bDescriptorType 2 |
| 389 |
wTotalLength 32 |
| 390 |
bNumInterfaces 1 |
| 391 |
bConfigurationValue 1 |
| 392 |
iConfiguration 0 |
| 393 |
bmAttributes 0xc0 |
| 394 |
Self Powered |
| 395 |
MaxPower 2mA |
| 396 |
Interface Descriptor: |
| 397 |
bLength 9 |
| 398 |
bDescriptorType 4 |
| 399 |
bInterfaceNumber 0 |
| 400 |
bAlternateSetting 0 |
| 401 |
bNumEndpoints 2 |
| 402 |
bInterfaceClass 2 Communications |
| 403 |
bInterfaceSubClass 12 Ethernet Emulation |
| 404 |
bInterfaceProtocol 7 Ethernet Emulation (EEM) |
| 405 |
iInterface 8 CDC Ethernet Emulation Model (EEM) |
| 406 |
Endpoint Descriptor: |
| 407 |
bLength 7 |
| 408 |
bDescriptorType 5 |
| 409 |
bEndpointAddress 0x81 EP 1 IN |
| 410 |
bmAttributes 2 |
| 411 |
Transfer Type Bulk |
| 412 |
Synch Type None |
| 413 |
Usage Type Data |
| 414 |
wMaxPacketSize 0x0040 1x 64 bytes |
| 415 |
bInterval 0 |
| 416 |
Endpoint Descriptor: |
| 417 |
bLength 7 |
| 418 |
bDescriptorType 5 |
| 419 |
bEndpointAddress 0x02 EP 2 OUT |
| 420 |
bmAttributes 2 |
| 421 |
Transfer Type Bulk |
| 422 |
Synch Type None |
| 423 |
Usage Type Data |
| 424 |
wMaxPacketSize 0x0040 1x 64 bytes |
| 425 |
bInterval 0 |
| 426 |
Device Qualifier (for other device speed): |
| 427 |
bLength 10 |
| 428 |
bDescriptorType 6 |
| 429 |
bcdUSB 2.00 |
| 430 |
bDeviceClass 2 Communications |
| 431 |
bDeviceSubClass 0 |
| 432 |
bDeviceProtocol 0 |
| 433 |
bMaxPacketSize0 64 |
| 434 |
bNumConfigurations 2 |
| 435 |
Device Status: 0x0001 |
| 436 |
Self Powered |
| 437 |
|
| 438 |
|
| 439 |
As I wrote in my initial mail: |
| 440 |
I see no difference in both, which may offer a possibilty to act upon |
| 441 |
when plugging in the one or the other (or both) devices/Ariettas. |
| 442 |
|
| 443 |
Before I mailed to the group I read the documentation you linked, but |
| 444 |
may be I missed something which reveals the solution to this |
| 445 |
problem... |
| 446 |
But what did I miss? |
| 447 |
|
| 448 |
Best regards, |
| 449 |
Meino |
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