Occasionally I'm trying to debug a (usually serial) device that starts very quickly.
If I get the device running, I can connect to it using:
minicom -D /dev/ttyUSB0
Then, if the device disconnects, minicom stays open until it reconnects.
Is there a switch to tell minicom to open in this "waiting" state, even if the device has not yet been created?
I've tried -o (Do not initialize.)
If all you want to do initially is capture all the output from the device you can use:
tail -F /dev/ttyUSB0
as this will wait until the device exists then read from it. If the device disappears and reappears, it will valiantly re-open it.
You can try creating a fifo and using minicom on this as the device. Then, in a loop, wait for the real device to appear, and open and connect it the fifo when it does, for example with socat. minicom will not see the re-opens.
mkfifo ~/myfifo
while sleep 1; do socat /dev/ttyUSB0,b19200,echo=0,raw ~/myfifo; done &
minicom -o -D ~/myfifo
b19200 is an example of setting the speed, which you can remove if it doesn't need to be set.
