if you use linux you may run into a problem that minicom causes with your usb-serial connected hardware devices... a file is created called LCK..ttyUSB0
that is placed in /var/lock by default, and by default root owns it... if you exit out of minicom ungracefully, you may get the message that ttyUSB0 is locked upon trying to restart... the fix is to simply remove the file with sudo rm /var/lock/LCK..ttyUSB0... however, i have found that once minicom is reopened, the output to the screen becomes garbled, as if there was a baud problem with the device...
this is bad, but here is the ticket...
run sudo minicom -s, reset the lock file location to your home directory, or another directory, and then sudo chown (user) LCK..ttyUSB0 once it is relocated... if minicom craps out again, just delete the lock file from the new location, and restart minicom... don't forget to save your settings as dfl prior to exiting...
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a network runs through it
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