Robert Hancock wrote:
It's because you haven't done anything to handle the error which is
still persisting. Likely the only thing sane you can do in this case is
close the fd and try to reopen it later.
This seems to be true, but not for what you might think.
It appears that if u plug the USB/serial device back into the usb-hub,
the code creates a /dev/ttyUSB1 ( if you have not yet closed the
disconnected /dev/ttyUSB0. ) When you do close /dev/ttyUSB0, then the
device is erased from the /dev directory.
Now /dev/ttyUSB1 is the device. And /dev/ttyUSB0 disappeared. This does
not seem proper. As now the program has no idea or capability to re-open
the GPS device.
I have been informed that this was an approved kernel feature. Is this
suppose to happen? Or was it an unintended consequence?
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