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Re: [pyusb-users] Reading RFID tag using MTI RU-824 via pylab
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From: Setia B. <boe...@gm...> - 2014-02-13 04:06:17
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I missed one parameter: device.write(0x01, complete_command_packet) print device.read(0x82, 16, 0, 1000) Now I have the same error: usb.core.USBError: [Errno 110] Operation timed out I need to re-read the command reference manual for the device. Kindest regards, Budi ========================= <boe...@gm...> <http://goo.gl/T5NDnD> <http://goo.gl/4xmCrj> <http://goo.gl/f2Dj7Q> <http://goo.gl/TlJuEd> <http://goo.gl/d6J1aE> <http://goo.gl/8ezaYx> ========================= *Please consider the environment * *before printing this email* On Thu, Feb 13, 2014 at 1:48 PM, Setia Budi <boe...@gm...> wrote: > I re-read the reference manual for the reader and I made few changes on > the data which I need to send. > At the moment I am quite sure about the format of the data which I need to > send (header, device_id, command_id, parameters, crc16). > This is the update for the code > > ====================================================================== > > HEADER = bytearray([0x4D, 0x54, 0x49, 0x43]) > DEVICE_ID = bytearray([0x00]) > COMMAND_ID = bytearray([0x03]) # for retrieving the operation mode > PARAMETERS = bytearray([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]) > > command_packet = HEADER + DEVICE_ID + COMMAND_ID + PARAMETERS > > checksum = crc16(command_packet) > > complete_command_packet = command_packet + bytearray([checksum & 0xff, > ((checksum >> 8) & 0xFF)]) > > device.write(0x01, complete_command_packet) > print device.read(0x82, 16, 1000) > > ===================================================================== > > I found an different error message when the device.read method is invoked. > > AttributeError: 'NoneType' object has no attribute 'bInterfaceNumber' > > Any idea about the error message? > > Kindest regards, > > Budi > > ========================= > <boe...@gm...> <http://goo.gl/T5NDnD> <http://goo.gl/4xmCrj> > <http://goo.gl/f2Dj7Q> <http://goo.gl/TlJuEd> > > <http://goo.gl/d6J1aE> <http://goo.gl/8ezaYx> > ========================= > *Please consider the environment * > *before printing this email* > > > On Wed, Feb 12, 2014 at 11:06 PM, Setia Budi <boe...@gm...> wrote: > >> Ok I will give a try tomorrow :) >> Thank you for the advice :) >> >> Budi >> >> ========================= >> <boe...@gm...> <http://goo.gl/T5NDnD> <http://goo.gl/4xmCrj> >> <http://goo.gl/f2Dj7Q> <http://goo.gl/TlJuEd> >> >> <http://goo.gl/d6J1aE> <http://goo.gl/8ezaYx> >> ========================= >> *Please consider the environment * >> *before printing this email* >> >> >> On Wed, Feb 12, 2014 at 9:52 PM, Wander Lairson Costa < >> wan...@gm...> wrote: >> >>> 2014-02-11 20:11 GMT-02:00 Setia Budi <boe...@gm...>: >>> > This is the output for lsusb -v -d 24e9:0824 >>> > >>> > Bus 002 Device 007: ID 24e9:0824 >>> > Device Descriptor: >>> > bLength 18 >>> > bDescriptorType 1 >>> > bcdUSB 1.10 >>> > bDeviceClass 255 Vendor Specific Class >>> > bDeviceSubClass 0 >>> > bDeviceProtocol 255 >>> > bMaxPacketSize0 8 >>> > idVendor 0x24e9 >>> > idProduct 0x0824 >>> > bcdDevice 0.01 >>> > iManufacturer 1 MICROELECTRONICS TECHNOLOGY INC. >>> > iProduct 2 MTI UHF RFID PRODUCT >>> > iSerial 3 1326U0002 >>> > bNumConfigurations 1 >>> > Configuration Descriptor: >>> > bLength 9 >>> > bDescriptorType 2 >>> > wTotalLength 41 >>> > bNumInterfaces 1 >>> > bConfigurationValue 1 >>> > iConfiguration 0 >>> > bmAttributes 0xc0 >>> > Self Powered >>> > MaxPower 500mA >>> > Interface Descriptor: >>> > bLength 9 >>> > bDescriptorType 4 >>> > bInterfaceNumber 0 >>> > bAlternateSetting 0 >>> > bNumEndpoints 2 >>> > 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 98 >>> > Report Descriptor: (length is 98) >>> > 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): Report ID, data= [ 0x43 ] 67 >>> > Item(Global): Report Count, data= [ 0x0f ] 15 >>> > Item(Global): Report Size, data= [ 0x08 ] 8 >>> > Item(Global): Logical Minimum, data= [ 0x00 ] 0 >>> > Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 >>> > Item(Local ): Usage, data= [ 0x01 ] 1 >>> > (null) >>> > Item(Main ): Output, data= [ 0x02 ] 2 >>> > Data Variable Absolute No_Wrap Linear >>> > Preferred_State No_Null_Position >>> Non_Volatile >>> > Bitfield >>> > Item(Global): Report ID, data= [ 0x52 ] 82 >>> > Item(Global): Report Count, data= [ 0x0f ] 15 >>> > Item(Global): Report Size, data= [ 0x08 ] 8 >>> > Item(Global): Logical Minimum, data= [ 0x00 ] 0 >>> > Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 >>> > Item(Local ): Usage, data= [ 0x01 ] 1 >>> > (null) >>> > Item(Main ): Input, data= [ 0x02 ] 2 >>> > Data Variable Absolute No_Wrap Linear >>> > Preferred_State No_Null_Position >>> Non_Volatile >>> > Bitfield >>> > Item(Global): Report ID, data= [ 0x42 ] 66 >>> > Item(Global): Report Count, data= [ 0x17 ] 23 >>> > Item(Global): Report Size, data= [ 0x08 ] 8 >>> > Item(Global): Logical Minimum, data= [ 0x00 ] 0 >>> > Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 >>> > Item(Local ): Usage, data= [ 0x01 ] 1 >>> > (null) >>> > Item(Main ): Input, data= [ 0x02 ] 2 >>> > Data Variable Absolute No_Wrap Linear >>> > Preferred_State No_Null_Position >>> Non_Volatile >>> > Bitfield >>> > Item(Global): Report ID, data= [ 0x41 ] 65 >>> > Item(Global): Report Count, data= [ 0x3f ] 63 >>> > Item(Global): Report Size, data= [ 0x08 ] 8 >>> > Item(Global): Logical Minimum, data= [ 0x00 ] 0 >>> > Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 >>> > Item(Local ): Usage, data= [ 0x01 ] 1 >>> > (null) >>> > Item(Main ): Input, data= [ 0x02 ] 2 >>> > Data Variable Absolute No_Wrap Linear >>> > Preferred_State No_Null_Position >>> Non_Volatile >>> > Bitfield >>> > Item(Global): Report ID, data= [ 0x49 ] 73 >>> > Item(Global): Report Count, data= [ 0x3f ] 63 >>> > Item(Global): Report Size, data= [ 0x08 ] 8 >>> > Item(Global): Logical Minimum, data= [ 0x00 ] 0 >>> > Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 >>> > Item(Local ): Usage, data= [ 0x01 ] 1 >>> > (null) >>> > Item(Main ): Input, data= [ 0x02 ] 2 >>> > Data Variable Absolute No_Wrap Linear >>> > Preferred_State No_Null_Position >>> Non_Volatile >>> > Bitfield >>> > Item(Global): Report ID, data= [ 0x45 ] 69 >>> > Item(Global): Report Count, data= [ 0x17 ] 23 >>> > Item(Global): Report Size, data= [ 0x08 ] 8 >>> > Item(Global): Logical Minimum, data= [ 0x00 ] 0 >>> > Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 >>> > Item(Local ): Usage, data= [ 0x01 ] 1 >>> > (null) >>> > Item(Main ): Input, data= [ 0x02 ] 2 >>> > Data Variable Absolute No_Wrap Linear >>> > Preferred_State No_Null_Position >>> Non_Volatile >>> > Bitfield >>> > Item(Main ): End Collection, data=none >>> > Endpoint Descriptor: >>> > bLength 7 >>> > bDescriptorType 5 >>> > bEndpointAddress 0x01 EP 1 OUT >>> > bmAttributes 3 >>> > Transfer Type Interrupt >>> > Synch Type None >>> > Usage Type Data >>> > wMaxPacketSize 0x0040 1x 64 bytes >>> > bInterval 1 >>> > Endpoint Descriptor: >>> > bLength 7 >>> > bDescriptorType 5 >>> > bEndpointAddress 0x82 EP 2 IN >>> > bmAttributes 3 >>> > Transfer Type Interrupt >>> > Synch Type None >>> > Usage Type Data >>> > wMaxPacketSize 0x0040 1x 64 bytes >>> > bInterval 1 >>> > Device Status: 0x0001 >>> > Self Powered >>> > >>> >>> To begin with, your former code can be summed up to this (with latest >>> git PyUSB): >>> >>> import usb.core >>> import usb.util >>> import sys >>> >>> VENDOR_ID = 0x24e9 >>> PRODUCT_ID = 0x0824 >>> >>> device = usb.core.find(idVendor=VENDOR_ID, idProduct=PRODUCT_ID) >>> >>> if device is None: >>> sys.exit("Could not find Id System Barcode Reader.") >>> else: >>> print 'Device detected' >>> >>> device.set_configuration() >>> >>> device.write(0x01, [0x01]) ---> you probably meant [0x01] or '\x01' >>> instead of '0x01' >>> print device.read(0x82, 64, 1000) >>> >>> If you are still getting a read timeout, that is probably because the >>> 0x01 command means nothing to the device. >>> >>> -- >>> Best Regards, >>> Wander Lairson Costa >>> >>> >>> ------------------------------------------------------------------------------ >>> Android apps run on BlackBerry 10 >>> Introducing the new BlackBerry 10.2.1 Runtime for Android apps. >>> Now with support for Jelly Bean, Bluetooth, Mapview and more. >>> Get your Android app in front of a whole new audience. Start now. >>> >>> http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.clktrk >>> _______________________________________________ >>> pyusb-users mailing list >>> pyu...@li... >>> https://lists.sourceforge.net/lists/listinfo/pyusb-users >>> >> >> > |
