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npat-efault / picocom

Minimal dumb-terminal emulation program
GNU General Public License v2.0
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Added support for waiting for the serial port and reconnecting after the device is closed #122

Open IsaacJT opened 3 years ago

IsaacJT commented 3 years ago

If configured with inotify support in the Makefile, picocom will wait for the serial port to appear rather than immediately exiting.

As inotify is only available on Linux, this functionality will only be activated when running under Linux.

wsakernel commented 2 years ago

Hmm, can't this be achieved outside picocom with 'inotifywait'? The added code is not small and not portable, so I'd like to keep the solution to this problem in the scripts calling picocom.

s-light commented 8 months ago

@wsakernel can you give me a hint how to do something like this with inotifywait ? i have no idea - the examples i found all seem very complex..

i tested with 

#!/bin/bash
inotifywait -m /dev --include 'ttyACM0' |
    while read dir action file; do
        echo "The file '$file' appeared in directory '$dir' via '$action'"
        # do something with the file
        # picocom /dev/ttyACM0 --baud 115200; 
    done

and for my device get 

$ pico_.sh 
Setting up watches.
Watches established.
The file 'ttyACM0' appeared in directory '/dev/' via 'ATTRIB'
The file 'ttyACM0' appeared in directory '/dev/' via 'DELETE'
The file 'ttyACM0' appeared in directory '/dev/' via 'CREATE'
The file 'ttyACM0' appeared in directory '/dev/' via 'ATTRIB'
The file 'ttyACM0' appeared in directory '/dev/' via 'ATTRIB'
The file 'ttyACM0' appeared in directory '/dev/' via 'CLOSE_NOWRITE,CLOSE'
The file 'ttyACM0' appeared in directory '/dev/' via 'ATTRIB'
The file 'ttyACM0' appeared in directory '/dev/' via 'DELETE'
The file 'ttyACM0' appeared in directory '/dev/' via 'CREATE'
The file 'ttyACM0' appeared in directory '/dev/' via 'ATTRIB'
The file 'ttyACM0' appeared in directory '/dev/' via 'ATTRIB'
The file 'ttyACM0' appeared in directory '/dev/' via 'CLOSE_NOWRITE,CLOSE'

so i would have no idea what event i should use... maybe the CLOSE_NOWRITE,CLOSE...

s-light commented 8 months ago

just found your example at https://gitlab.com/wsakernel/picocom/-/issues/2

#!/bin/sh
port="${1:-/dev/ttyUSB0}"
while :; do
    picocom "$@"
    inotifywait -qq -e attrib --include="$(basename $port)" "$(dirname $port)"
done