Re: [pyusb-users] Stuck on a write error

[Wander L. <wan...@gm...>]

Hi Ivo,

Try handle.setConfiguration(1) after handle.detachKernelDriver

Wander

2010/3/30 Ivan Dodig <ma...@gm...>:
> Hi again.
> I'm having trouble communicate with my device. Device has a HID firmware
> loaded and USB communication works if I use a program supplied with the
> firmware.
> Of course I want to write my own Python program.
>
> After the interruptWrite function I get this error
> Traceback (most recent call last):
>   File "<pyshell#48>", line 1, in <module>
>     handle.interruptWrite(1, [1])
> USBError: usb_submit_async: submitting request failed, win error: The
> parameter is incorrect.
>
> Google didn't help.
>
> What's wrong? What causes this error? I'm totally stuck. Here is my code.
> Thank you.
>
> import usb
> bus=usb.busses()[0]
> devices=bus.devices
> for device in devices:
>     if device.idVendor == 0x04CC:
>         PowerModule = device
> config=PowerModule.configurations[0]
> handle=PowerModule.open()
> handle.detachKernelDriver(0)
> handle.interruptWrite(1, [1])           << Here I get the error
>
>
>
>
>
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