Hi Mohamed,
You wrote on Wed, Mar 16, 2022 at 04:40:52PM +0000:
> I wrote this program to assert ftdi pins using bitbang feature but when it
> opens the usb port, the device file (/dev/ttyUSBx) doesn't appear again for
> ever (until a reboot). It seems it fails to close it properly. Any ideas?
this is highly likely the "reattach" behavior that can be configured.
Look for AUTO_DETACH_REATACH_SIO_MODULE. It's part since libftdi 1.5:
"Add kernel driver auto attach/detach.
See new AUTO_DETACH_REATACH_SIO_MODULE option"
Cheers,
Thomas
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