Menu
▾
▴
Re: [pyusb-users] Help to access on my OCR device
|
From: Christian B. <ma...@gm...> - 2013-12-26 19:23:01
|
Ok I managed to read
array('B', [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
Thats is great, could you explain me what the 3 EndPoint are doing? They
are IN so I need to use the write method, so probably the interrupt is
going to turn on the lights and then I can read with the first EndPoint.
If I decompile the DLL I should be ok to re-create a small library? :)
On Thu, Dec 26, 2013 at 6:56 PM, Wander Lairson Costa <
wan...@gm...> wrote:
> 2013/12/26 Christian Bianchini <ma...@gm...>:
> > Hello,
> > I am trying to access on my OCR device that reads from invoice the number
> > and fill the input text box in the webpage.
> > I have the DLL for Windows and the file for Mac osx but I can't really
> turn
> > on the device.
> >
> > This is the lsusb:
> >
> > $ lsusb -vv -d0852:0005
> >
> > Bus 001 Device 010: ID 0852:0005 CSEM
> > Device Descriptor:
> > bLength 18
> > bDescriptorType 1
> > bcdUSB 1.00
> > bDeviceClass 255 Vendor Specific Class
> > bDeviceSubClass 0
> > bDeviceProtocol 255
> > bMaxPacketSize0 64
> > idVendor 0x0852 CSEM
> > idProduct 0x0005
> > bcdDevice 0.01
> > iManufacturer 1 Xemtec SA
> > iProduct 2 Xemscan
> > iSerial 0
> > bNumConfigurations 1
> > Configuration Descriptor:
> > bLength 9
> > bDescriptorType 2
> > wTotalLength 55
> > bNumInterfaces 1
> > bConfigurationValue 1
> > iConfiguration 0
> > bmAttributes 0x80
> > (Bus Powered)
> > MaxPower 200mA
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 0
> > bAlternateSetting 0
> > bNumEndpoints 0
> > bInterfaceClass 255 Vendor Specific Class
> > bInterfaceSubClass 0
> > bInterfaceProtocol 0
> > iInterface 0
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 0
> > bAlternateSetting 1
> > bNumEndpoints 4
> > bInterfaceClass 255 Vendor Specific Class
> > bInterfaceSubClass 0
> > bInterfaceProtocol 0
> > iInterface 0
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x01 EP 1 OUT
> > bmAttributes 2
> > Transfer Type Bulk
> > Synch Type None
> > Usage Type Data
> > wMaxPacketSize 0x0040 1x 64 bytes
> > bInterval 0
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x81 EP 1 IN
> > bmAttributes 2
> > Transfer Type Bulk
> > Synch Type None
> > Usage Type Data
> > wMaxPacketSize 0x0040 1x 64 bytes
> > bInterval 0
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x82 EP 2 IN
> > bmAttributes 3
> > Transfer Type Interrupt
> > Synch Type None
> > Usage Type Data
> > wMaxPacketSize 0x0005 1x 5 bytes
> > bInterval 10
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x88 EP 8 IN
> > bmAttributes 1
> > Transfer Type Isochronous
> > Synch Type None
> > Usage Type Data
> > wMaxPacketSize 0x0284 1x 644 bytes
> > bInterval 1
> > Device Status: 0x0000
> > (Bus Powered)
> >
> >
> > I am trying to get it works under linux because there is nothing ready
> and I
> > would like to avoid to install windows.
> >
> > First thing that I found is that the Device status changes when you plug
> the
> > first time and then after a few seconds it changes to 0x000.
> >
> > This is the status when you plug it in:
> > Device Status: 0x0002
> > (Bus Powered)
> > Remote Wakeup Enabled
> >
> > It's flashing for a few second and then off, on windows it turns on
> when is
> > reading the numbers.
> >
> > So far I have made this:
> >
> > dev = usb.core.find(idVendor=0x0852, idProduct=0x0005)
> > try:
> > dev.set_configuration()
> >
> > except usb.core.USBError as e:
> > sys.exit("Could not set configuration")
> >
> > endpointWrite = dev[0][(0,1)][1]
> > endpointRead = dev[0][(0,1)][0]
> >
> > print usb.control.get_status(dev)
> >
> > print usb.legacy.DeviceHandle(dev).interruptRead(0x82,0x0005)
> >
>
> First of all, you don't really want to mix up the new API with the
> legacy interface. Just forget about the legacy module, it is there for
> backward compatibility with PyUSB 0.4.
>
> >
> > But the output is:
> >
> > 0
> > Traceback (most recent call last):
> > File "test.py", line 20, in <module>
> > print usb.legacy.DeviceHandle(dev).interruptRead(0x82,0x0005)
> > File "/usr/local/lib/python2.7/dist-packages/usb/legacy.py", line 182,
> in
> > interruptRead
> > return self.dev.read(endpoint, size, self.__claimed_interface,
> timeout)
> > File "/usr/local/lib/python2.7/dist-packages/usb/core.py", line 662, in
> > read
> > fn = fn_map[self._ctx.get_endpoint_type(self, endpoint, intf)]
> > File "/usr/local/lib/python2.7/dist-packages/usb/core.py", line 180, in
> > get_endpoint_type
> > etype = util.endpoint_type(e.bmAttributes)
> > AttributeError: 'NoneType' object has no attribute 'bmAttributes'
> >
> >
> > I tried to use read, interruptWrite, etc.. but always is giving me this
> > error, it seems that I have turn it on or something else.
> > Can someone help me with get this device working?
> >
>
> Now, you need to set the alternate setting to 1 (as shown by lsusb).
> You may want to give a look at the PyUSB tutorial [1] to learn how to
> use PyUSB functions, as well as the doc strings.
>
> [1] https://github.com/walac/pyusb/blob/master/docs/tutorial.rst
>
> --
> Best Regards,
> Wander Lairson Costa
>
>
> ------------------------------------------------------------------------------
> Rapidly troubleshoot problems before they affect your business. Most IT
> organizations don't have a clear picture of how application performance
> affects their revenue. With AppDynamics, you get 100% visibility into your
> Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics
> Pro!
> http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk
> _______________________________________________
> pyusb-users mailing list
> pyu...@li...
> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>
--
---------------------------
Admin TicinoCinema.ch
chr...@ti...
La tua risorsa ticinese sul cinema
Admin Euservers.net
chr...@eu...
Hosting web
|