Hi.
As you may know, i am working in a device using an TUSB3410 with my
own firmware.
Most is working.
I plug the device it logs in linux correctly and i am able to detach
the driver and make usb requests with pyusb.
The problem comes when it has deadtime between calls then i get the
next message in dmesg:
usb 3-2: usbfs: process 7564 (python) did not claim interface 0 before use
I can not find any method for claiming interface in pyusb. Is there one?
Some more details:
I made a class to handle the requests (capafisica) and a test scenario:
if __name__ == '__main__':
fisica = capafisica()
fisica.logging = fisica.LOGGING_DEBUG
while raw_input("Presione una tecla")>0:
fisica.try_start()
fisica.test()
fisica.set_gpio(0xFF,mask=0x0C)
fisica.get_gpio()
fisica.try_send("Hello World!")
print fisica.try_recv()
When i press a key it launches the set of functions and all works
correctly. IF i press a key again, then most of them fails, i may say,
randomly. AND this error message in dmesg appears.
However if i edit the test scenario to:
if __name__ == '__main__':
fisica = capafisica()
fisica.logging = fisica.LOGGING_DEBUG
while raw_input("Presione una tecla")>0:
fisica.try_start()
fisica.test()
fisica.set_gpio(0xFF,mask=0x0C)
fisica.get_gpio()
fisica.try_send("Hello World!")
print fisica.try_recv()
fisica.try_start()
fisica.test()
fisica.set_gpio(0xFF,mask=0x0C)
fisica.get_gpio()
fisica.try_send("Hello World!")
print fisica.try_recv()
fisica.try_start()
fisica.test()
fisica.set_gpio(0xFF,mask=0x0C)
fisica.get_gpio()
fisica.try_send("Hello World!")
print fisica.try_recv()
fisica.try_start()
fisica.test()
fisica.set_gpio(0xFF,mask=0x0C)
fisica.get_gpio()
fisica.try_send("Hello World!")
print fisica.try_recv()
Then all the calls works.
In that way i discard that can be a problem in my firmware. Well, i do
not discard it completely, but i need to know how to "claim the
interface"
Thanks
Diego
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