update:
If I use the same endpoint for reading and writing it works but returns just
0s :(
#prueba.py
import usb.core
dev = usb.core.find(idVendor=1240,idProduct=32)
if dev is None:
raise ValueError('Device not found')
interface = dev.get_interface_altsetting()
if dev.is_kernel_driver_active(interface.bInterfaceNumber) is True:
dev.detach_kernel_driver(interface.bInterfaceNumber)
dev.set_configuration()
msg = '\x02\x03\x00'
dev.write(1, msg, 0)
ret = dev.read(1, len(msg), 0)
print ret
msg: [1, 3, 0]
ret: array('B', [0, 0, 0, 0, 0])
On Tue, Dec 14, 2010 at 4:06 PM, Marcos Wolff <wmar...@gmail.com> wrote:
> Hi again,
>
> Did a little more research. I found out the console command lsusb -vv to
> analyze the device, runned it, got this:
>
> Bus 002 Device 030: ID 04d8:0020 Microchip Technology, Inc.
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 1.10
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 64
> idVendor 0x04d8 Microchip Technology, Inc.
> idProduct 0x0020
> bcdDevice 1.00
> iManufacturer 1 DZE
> iProduct 2 CDI TEST v1.0
> iSerial 0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 41
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xc0
> Self Powered
> MaxPower 100mA
> 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 1.00
> bCountryCode 0 Not supported
> bNumDescriptors 1
> bDescriptorType 34 Report
> wDescriptorLength 32
> Report Descriptors:
> ** UNAVAILABLE **
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> * bEndpointAddress 0x81 EP 1 IN*
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0008 1x 8 bytes
> bInterval 1
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> * bEndpointAddress 0x01 EP 1 OUT*
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0008 1x 8 bytes
> bInterval 10
> Device Status: 0x0001
> Self Powered
>
> -----------------------------
>
> so I modified the script to use those endpoints:
>
> #prueba.py
>
> import usb.core
>
> dev = usb.core.find(idVendor=1240,idProduct=32)
> if dev is None:
> raise ValueError('Device not found')
>
> interface = dev.get_interface_altsetting()
> if dev.is_kernel_driver_active(interface.bInterfaceNumber) is True:
> dev.detach_kernel_driver(interface.bInterfaceNumber)
>
> dev.set_configuration()
>
> msg = '\x02\x03\x00'
> dev.write(1, msg, 0)
> ret = dev.read(0x81, len(msg), 0)
> print ret
>
> Now the device start blinking its leds like it's working but I get:
>
> Traceback (most recent call last):
> File "prueba.py", line 27, in <module>
> ret = dev.read(0x81, len(msg), 0)
> File "/home/administrador/pyusb-1.0.0-a0/usb/core.py", line 624, in read
> self.__get_timeout(timeout)
> File "/home/administrador/pyusb-1.0.0-a0/usb/_debug.py", line 53, in
> do_trace
> return f(*args, **named_args)
> File "/home/administrador/pyusb-1.0.0-a0/usb/backend/libusb10.py", line
> 501, in intr_read
> timeout)
> File "/home/administrador/pyusb-1.0.0-a0/usb/backend/libusb10.py", line
> 581, in __read
> timeout))
> File "/home/administrador/pyusb-1.0.0-a0/usb/backend/libusb10.py", line
> 353, in _check
> raise USBError(_str_error[retval.value])
> *usb.core.USBError: Operation timed out*
>
> Tried changing the timeout value and didn't work :(.
>
> Any ideas ?
>
> Thanks !
>
> On Tue, Dec 14, 2010 at 3:32 PM, Marcos Wolff <wmar...@gmail.com> wrote:
>
>> Follow-up: Santiago:
>>
>> Also found the method doesn't exists in pyusb 1.0 apparently it manages
>> interface claiming automatically.
>>
>> source:
>> http://www.mail-archive.com/pyusb-users@lists.sourceforge.net/msg00374.html
>>
>> On Tue, Dec 14, 2010 at 3:30 PM, Marcos Wolff <wmar...@gmail.com> wrote:
>>
>>> Hi Santiago,
>>>
>>> Following this tutorial it doesn't seem to be needed:
>>>
>>> http://pyusb.sourceforge.net/docs/1.0/tutorial.htm#talk-to-me-honey
>>>
>>> Anyway I've tried (kind of desperate here) and didn't work :(
>>>
>>> thank for the quick answer !
>>>
>>>
>>> On Tue, Dec 14, 2010 at 3:18 PM, Santiago Palomino Sanchez-Manjavacas <
>>> sps...@gmail.com> wrote:
>>>
>>>> missing claimInterface() before using the control endpoint?
>>>>
>>>> Just a guess
>>>>
>>>> On Tue, Dec 14, 2010 at 18:54, Marcos Wolff <wmar...@gmail.com> wrote:
>>>>
>>>>> Hi everyone,
>>>>>
>>>>> I'm having trouble comunicating with a custom made (from a PIC 18f4550
>>>>> micro-controller) HID device. Nowadays is used with windows and the
>>>>> default
>>>>> HID driver in vb6 but I would like to port it to linux (ubuntu 10.10) and
>>>>> pyusb (1.0a).
>>>>>
>>>>> The device is simple, when it receives 3 bytes via HID it responses 3
>>>>> bytes back with data. The people who made it told me that everything is
>>>>> handled via end point 0 and default config).
>>>>>
>>>>> As I want to port it to linux I read this tutorial
>>>>> http://pyusb.sourceforge.net/docs/1.0/tutorial.html and tried to
>>>>> communicate via default config endpoint configuration:
>>>>>
>>>>> #prueba.py
>>>>>
>>>>> import usb.core
>>>>>
>>>>> #busco dispositivo
>>>>> dev = usb.core.find(idVendor=1240,idProduct=32)
>>>>> if dev is None:
>>>>> raise ValueError('Device not found')
>>>>>
>>>>> interface = dev.get_interface_altsetting()
>>>>> if dev.is_kernel_driver_active(interface.bInterfaceNumber) is True:
>>>>> dev.detach_kernel_driver(interface.bInterfaceNumber)
>>>>>
>>>>>
>>>>> dev.set_configuration()
>>>>>
>>>>> #mensaje de 3 bytes
>>>>> msg = '\x02\x03\x00'
>>>>>
>>>>> #bmRequestType y bRequest as said in
>>>>> http://www.jungo.com/st/support/documentation/windriver/811/wdusb_man_mhtml/node55.html#usb_standard_dev_req_codes
>>>>>
>>>>>
>>>>> dev.ctrl_transfer(0x40, 0x02, 0, 0, msg)
>>>>>
>>>>>
>>>>> and I get this error which I don't fully understand:
>>>>>
>>>>> Traceback (most recent call last):
>>>>> File "ejemplo.py", line 39, in <module>
>>>>> print dev.ctrl_transfer(0x40, 0x02, 0, 0, msg)
>>>>> File "/home/administrador/pyusb-1.0.0-a0/usb/core.py", line 668, in
>>>>> ctrl_transfer
>>>>> self.__get_timeout(timeout)
>>>>> File "/home/administrador/pyusb-1.0.0-a0/usb/_debug.py", line 53, in
>>>>> do_trace
>>>>> return f(*args, **named_args)
>>>>> File "/home/administrador/pyusb-1.0.0-a0/usb/backend/libusb10.py",
>>>>> line 538, in ctrl_transfer
>>>>> timeout))
>>>>> File "/home/administrador/pyusb-1.0.0-a0/usb/backend/libusb10.py",
>>>>> line 353, in _check
>>>>> raise USBError(_str_error[retval.value])
>>>>> *usb.core.USBError: Pipe error*
>>>>>
>>>>> Could someone guide me ? help me see what I'm doing wrong ?
>>>>>
>>>>> Thanks in advance !
>>>>> Marcos.
>>>>>
>>>>>
>>>>> PD: I tried to sniff usb ports with this tutorial
>>>>> http://biot.com/blog/usb-sniffing-on-linux but nothing seems to be
>>>>> happening excepto when I reset the device.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------------------------
>>>>> Lotusphere 2011
>>>>> Register now for Lotusphere 2011 and learn how
>>>>> to connect the dots, take your collaborative environment
>>>>> to the next level, and enter the era of Social Business.
>>>>> http://p.sf.net/sfu/lotusphere-d2d
>>>>> _______________________________________________
>>>>> pyusb-users mailing list
>>>>> pyusb-users@lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>>>>>
>>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Lotusphere 2011
>>>> Register now for Lotusphere 2011 and learn how
>>>> to connect the dots, take your collaborative environment
>>>> to the next level, and enter the era of Social Business.
>>>> http://p.sf.net/sfu/lotusphere-d2d
>>>> _______________________________________________
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>>>> pyusb-users@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>>>>
>>>>
>>>
>>
>
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