Hi all,
This is going to be a length email documenting the last 10 hours of my
life before I pass out at my computer desk.
Story:
I purchased a cash drawer with a USB interface. It came with windows
drivers but no official linux drivers. It works great under Win98, got a
nice utility that polls/fires the selenoid.
Goal:
Eventually, I want to be able to do this in linux:
./open_drawer (returns 1 on success)
./is_drawer_open (returns 1 on success)
Windows Side:
I have used both SnoopyPro and sniffusb to gather the information going
across the wire. Here is some setup information for you:
00000136 0.78196240 ConfigurationDescriptor = 0xc1774740 (configure)
00000137 0.78198480 ConfigurationDescriptor : bLength = 0x09
00000138 0.78200640 ConfigurationDescriptor : bDescriptorType = 0x02
00000139 0.78202960 ConfigurationDescriptor : wTotalLength =
0x0019
00000140 0.78205200 ConfigurationDescriptor : bNumInterfaces = 0x01
00000141 0.78207520 ConfigurationDescriptor : bConfigurationValue = 0x01
00000142 0.78209760 ConfigurationDescriptor : iConfiguration = 0x04
00000143 0.78212000 ConfigurationDescriptor : bmAttributes = 0x80
00000144 0.78214240 ConfigurationDescriptor : MaxPower = 0xf0
00000145 0.78216000 ConfigurationHandle = 0x00000000
00000146 0.78218160 Interface[0]: Length = 0x00000024
00000147 0.78220160 Interface[0]: InterfaceNumber = 0x00
00000148 0.78222080 Interface[0]: AlternateSetting = 0x00
00000150 0.78464240 <<<<<<< URB 3 coming back...
00000151 0.78466160 -- URB_FUNCTION_SELECT_CONFIGURATION:
00000152 0.78468480 ConfigurationDescriptor = 0xc1774740 (configure)
00000153 0.78470720 ConfigurationDescriptor : bLength = 0x09
00000154 0.78472960 ConfigurationDescriptor : bDescriptorType = 0x02
00000155 0.78475200 ConfigurationDescriptor : wTotalLength =
0x0019
00000156 0.78477440 ConfigurationDescriptor : bNumInterfaces = 0x01
00000157 0.78479600 ConfigurationDescriptor : bConfigurationValue = 0x01
00000158 0.78481840 ConfigurationDescriptor : iConfiguration = 0x04
00000159 0.78484080 ConfigurationDescriptor : bmAttributes = 0x80
00000160 0.78486240 ConfigurationDescriptor : MaxPower = 0xf0
00000161 0.78488160 ConfigurationHandle = 0xc1885820
00000162 0.78490320 Interface[0]: Length = 0x00000024
00000163 0.78492240 Interface[0]: InterfaceNumber = 0x00
00000164 0.78494160 Interface[0]: AlternateSetting = 0x00
00000165 0.78496080 Interface[0]: Class = 0x00
00000166 0.78498000 Interface[0]: SubClass = 0x00
00000167 0.78499920 Interface[0]: Protocol = 0x00
00000168 0.78502160 Interface[0]: InterfaceHandle = 0xc178eed0
00000169 0.78504160 Interface[0]: NumberOfPipes = 0x00000001
00000170 0.78506640 Interface[0]: Pipes[0] : MaximumPacketSize = 0x0008
00000171 0.78508960 Interface[0]: Pipes[0] : EndpointAddress = 0x81
00000172 0.78511360 Interface[0]: Pipes[0] : Interval = 0x0a
00000173 0.78514320 Interface[0]: Pipes[0] : PipeType = 0x03
(UsbdPipeTypeInterrupt)
00000174 0.78516880 Interface[0]: Pipes[0] : PipeHandle =
0xc178eee8
00000175 0.78519440 Interface[0]: Pipes[0] : MaxTransferSize =
0x00001000
00000176 0.78521840 Interface[0]: Pipes[0] : PipeFlags = 0x00
00000178 0.78523840 <<<<<<< URB 3 coming back...
00000179 0.78529680 -- URB_FUNCTION_SELECT_CONFIGURATION:
00000180 0.78533200 ConfigurationDescriptor = 0xc1774740 (configure)
00000181 0.78535440 ConfigurationDescriptor : bLength = 0x09
00000182 0.78537680 ConfigurationDescriptor : bDescriptorType = 0x02
00000183 0.78539920 ConfigurationDescriptor : wTotalLength =
0x0019
00000184 0.78542320 ConfigurationDescriptor : bNumInterfaces = 0x01
00000185 0.78544800 ConfigurationDescriptor : bConfigurationValue = 0x01
00000186 0.78547040 ConfigurationDescriptor : iConfiguration = 0x04
00000187 0.78549280 ConfigurationDescriptor : bmAttributes = 0x80
00000188 0.78551520 ConfigurationDescriptor : MaxPower = 0xf0
00000189 0.78553520 ConfigurationHandle = 0xc1885820
00000190 0.78555600 Interface[0]: Length = 0x00000024
00000191 0.78557520 Interface[0]: InterfaceNumber = 0x00
00000192 0.78559440 Interface[0]: AlternateSetting = 0x00
00000193 0.78561360 Interface[0]: Class = 0x00
00000194 0.78563360 Interface[0]: SubClass = 0x00
00000195 0.78565280 Interface[0]: Protocol = 0x00
00000196 0.78567520 Interface[0]: InterfaceHandle = 0xc178eed0
00000197 0.78569520 Interface[0]: NumberOfPipes = 0x00000001
00000198 0.78571920 Interface[0]: Pipes[0] : MaximumPacketSize = 0x0008
00000199 0.78574240 Interface[0]: Pipes[0] : EndpointAddress = 0x81
00000200 0.78576560 Interface[0]: Pipes[0] : Interval = 0x0a
00000201 0.78579520 Interface[0]: Pipes[0] : PipeType = 0x03
(UsbdPipeTypeInterrupt)
00000202 0.78582080 Interface[0]: Pipes[0] : PipeHandle =
0xc178eee8
00000203 0.78584560 Interface[0]: Pipes[0] : MaxTransferSize =
0x00001000
00000204 0.78586880 Interface[0]: Pipes[0] : PipeFlags = 0x00
And here is some "action"...
00004061 27.05763600 >>>>>>> URB 78 going down...
00004062 27.05765280 -- URB_FUNCTION_VENDOR_ENDPOINT:
00004063 27.05768320 TransferFlags = 00000001
(USBD_TRANSFER_DIRECTION_IN, ~USBD_SHORT_TRANSFER_OK)
00004064 27.05769920 TransferBufferLength = 00000008
00004065 27.05771680 TransferBuffer = c1799c5c
00004066 27.05773280 TransferBufferMDL = 00000000
00004067 27.05774880 UrbLink = 00000000
00004068 27.05776480 RequestTypeReservedBits = 00
00004069 27.05778000 Request = 02
00004070 27.05779680 Value = 00fb
00004071 27.05781280 Index = 0000
00004072 27.05783760 UsbSnoop - IRP_MJ_INTERNAL_DEVICE_CONTROL,
IOCTL_INTERNAL_USB_SUBMIT_URB
00004074 27.05785840 >>>>>>> URB 78 going down...
00004075 27.05787440 -- URB_FUNCTION_VENDOR_ENDPOINT:
00004076 27.05790400 TransferFlags = 00000001
(USBD_TRANSFER_DIRECTION_IN, ~USBD_SHORT_TRANSFER_OK)
00004077 27.05792000 TransferBufferLength = 00000008
00004078 27.05793760 TransferBuffer = c1799c5c
00004079 27.05795360 TransferBufferMDL = 00000000
00004080 27.05797120 UrbLink = 00000000
00004081 27.05798640 RequestTypeReservedBits = 00
00004082 27.05800160 Request = 02
00004083 27.05801840 Value = 00fb
00004084 27.05803360 Index = 0000
00004086 27.06202160 <<<<<<< URB 78 coming back...
00004087 27.06203920 -- URB_FUNCTION_CONTROL_TRANSFER:
00004088 27.06205760 PipeHandle = c1792e5c
00004089 27.06208640 TransferFlags = 00000003
(USBD_TRANSFER_DIRECTION_IN, USBD_SHORT_TRANSFER_OK)
00004090 27.06210240 TransferBufferLength = 00000008
00004091 27.06212080 TransferBuffer = c1799c5c
00004092 27.06213840 TransferBufferMDL = c1799c30
00004094 27.06215200 0000:
00004095 27.06220800 42 00 fb 00 00 00 08 00
00004096 27.06222400 UrbLink = 00000000
00004097 27.06229760 SetupPacket : c2 02 fb 00 00 00 08 00
00004099 27.06231840 <<<<<<< URB 78 coming back...
00004100 27.06233600 -- URB_FUNCTION_CONTROL_TRANSFER:
00004101 27.06235440 PipeHandle = c1792e5c
00004102 27.06238320 TransferFlags = 00000003
(USBD_TRANSFER_DIRECTION_IN, USBD_SHORT_TRANSFER_OK)
00004103 27.06239920 TransferBufferLength = 00000008
00004104 27.06241600 TransferBuffer = c1799c5c
00004105 27.06243360 TransferBufferMDL = c1799c30
00004107 27.06244800 0000:
00004108 27.06250400 42 00 fb 00 00 00 08 00
00004109 27.06252000 UrbLink = 00000000
00004110 27.06259520 SetupPacket : c2 02 fb 00 00 00 08 00
00004111 27.23684720 UsbSnoop - IRP_MJ_INTERNAL_DEVICE_CONTROL,
IOCTL_INTERNAL_USB_SUBMIT_URB
This "action" is assumed (by me) to cause the drawer to open.
>From my own bleeding eye balls I could see this difference:
Something to do with opening the drawer:
42 00 fb 00 00 00 08 00
Something to do with seeing the status of the drawer:
42 00 fa 00 00 00 08 00
Now when I plug this puppy into my linux box i tail /var/log/messages and I see this:
Feb 2 05:49:52 localhost kernel: hub.c: new USB device 00:1f.2-1, assigned address 6
Feb 2 05:49:52 localhost kernel: usb.c: USB device 6 (vend/prod 0x6e5/0x8003) is not
claimed by any active driver.
Feb 2 05:49:55 localhost /etc/hotplug/usb.agent: Setup cashdrawer for USB product
6e5/8003/110
Feb 2 05:49:55 localhost /etc/hotplug/usb.agent: Module setup cashdrawer for USB
product 6e5/8003/110
The "cashdrawer" script was done by editing /etc/hotplug/usb.usermap and
adding this row:
# usb module match_flags idVendor idProduct bcdDevice_lo bcdDevice_hi
bDeviceClass bDeviceSubClass bDeviceProtocol bInterfaceClass bInterfaceSubClass
bInterfaceProtocol driver_info
cashdrawer 0x0003 0x06e5 0x8003 0x0000 0x0000 0x00
0x00 0x00 0x00 0x00 0x00
0x00000000
... and adding this script for giggles:
/etc/hotplug/usb/cashdrawer
... it does nothing.
So now that I was armed with this information I thought reverse-eng would
be no sweat. How wrong I really was... :(
Linux software:
I have tried the following packages with no luck:
Perl based:
USB-0.02
--SNIP
$my_device = USB::usb_open($blah2);
$set_interface_results = USB::usb_claim_interface($my_device,
"0x00");
$reset_endpoint = USB::usb_resetep($my_device, 129);
$set_config_results = USB::usb_set_configuration($my_device,
1);
$longshot = USB::usb_control_msg($my_device, 00, 02, 251,
0000, "c1799c5c", 8, 100000);
$close = USB::usb_close($my_device);
--SNAP
I could open (as in virtually) the device and close the device. But when
it came to claiming an interface it would always say "Device or resource
busy" or "Broken pipe."
libusb based:
usb-robot-0.2.0
I used the output from the logs on the windows machine and I had to
heavily hack the perl scripts but never got anywhere.
Here is a sample session:
--SNIP
[root@localhost usb-robot-0.2.0]# ./usb-robot-slave product=0x08003 vendor=0x06e5
./usb-robot-slave: starting usb-robot version 0.2.0
(c) 2000, 2001 John Fremlin
Licensed under the GNU Public License version 2, see file COPYING.
You didn't pay me for this program. You have no rights.
doing bus scan for:
idVendor 0x6e5
idProduct 0x8003
found bus 001
scanning bus 001
device 001 on bus 001 does not match
found device 006 on bus 001 (idVendor 0x6e5 idProduct 0x8003)
opening device 006 on bus 001
OK: id=0
Type help and press return for a list of commands
usb-robot> config 1
OK: id=1
usb-robot> interface 0
OK: id=2
usb-robot> transfer type=control size=8 ep=0x81 dir=out requesttype=0 request=2
value=251 index=0
--SNAP
My input was:
config 1
interface 0
transfer...
For some reason it just hangs after I type the last command.
Now my final try was with /usr/src/linux/drivers/usb/usb-skel.c
That was a joke, just substituted skel->cashdrawer and then tried to do a
gcc usb-cashdrawer.c and never looked back.
So this is where I stand:
I have done all that I know of, put forth 150% effort and came up short.
Can someone please help me, I would be so happy! I want to understand
what is happening here. Everything seems so simple but yet, their is
some area that is hiding from me.
Special thanks to anyone that has gotten this far,
Caylan
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