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Shell script for displaying RN 214 LCD messages
Hi everyone,
I made a small ssh shell script for displaying texts on Readynas 214 (or 204) OS6.0.xx LCD Display (e.g. for messages of an end of a ssh shell programm). Have fun with it!
Name it as you want (e.g. lcd_text.sh).
#!/bin/bash
#by h8ohmh
MSG="${1}"
DURATION="${2}"
UNK="$3"
if [[ -z "$UNK" ]]; then
UNK=478
fi
/usr/bin/rnutil rn_lcd -s "$MSG" -p 1 -e $DURATION -k $UNK
exit 0usage example:
lcd_text.sh "blabla" 10 "unknown"
(10 for 10 seconds)
11 Replies
thx for sharing.
Any reason you say this is for the 214/204 and not generic for all OS6 units with an LCD? It works on a 516 as well.
Where did you find documentation on the commands for rn_lcd? It doesn't seem to have any help available.
Messing around with it a bit, P seems to be a page designator. I though K could be related to how it cycles between pages, and I did have it cycling between two messages, but I've not fully figured it out. If it's a number, it definately has an effect on the duration.
- I got that command analyzing /etc on ReadyNas OS ssh shell. So far have you tried all -h or --help commands with that rn_lcd? In any case try to use "od" command for examining /sbin/ /bin/ and so on. As far as the ReadyNas team have no explicit command for accessing the LCD my script is the best solution instead of installing a huge GB development environtment on the NAS and a PC... As I wrote: No one has to use it, it's free and it does no harm: it relies only on the ReadyNas OS content! You can use even a blinking messages with a shell for ... do; done loop (one lcd cmd displays text for 3s the other one no)
Yeah, I tried all possible help options and got nothing. rnutil itself has a main help screen, but nothing for that subcommand I can find. I may move a NAS with a display into the same room as my computer desk so I can experiment more. Examining rnutil with a hex editor shows options and error messages for some sub-commands, but none for rn_lcd. It doesn't even complain if K is a number or string.
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