Beastlykings: define "can't make it work" and i could provide more help.

There're two lines in the script having "warn" and commented out. You can uncomment them by removing the "#" before the warn, to make the script a bit more verbose. Maybe that'll help.

snowcrash: thanks a lot for that guide, I am however experiencing a similar problem to a previous poster, where it simply comes up with the following:

/psp/scripts/goodnight_chumby: line 1: T: not found
/psp/scripts/goodnight_chumby: line 15: my: not found
/psp/scripts/goodnight_chumby: line 16: my: not found
/psp/scripts/goodnight_chumby: line 16: 60: not found
/psp/scripts/goodnight_chumby: line 18: my: not found
/psp/scripts/goodnight_chumby: line 19: syntax error: "(" unexpected

I followed your instructions to the letter, though am not getting any sort of confirmation when i CHMOD, which is making me think that something is going wrong there... any thoughts?

Thanks in advance

My sneaking suspicion is that he didn't copy/paste/type all of the comments, including the pound-bang line which is actually functional.

/var/run/btplay.state should contain '2' if a track is currently playing.

I think I must be being severely retarded, as I still can't get this to work, even when wgetting the script from that coderpos.org site (thanks a lot btw miyagawa for hosting that!)

when I run it with the argument of 1,

i.e. /psp/scripts/goodnight_chumby 1

nothing happens. i've got a shoutcast station playing and its in night mode, what's am I doing wrong?

I am running the script on this page, and used wget and made no modifications.

It did run last night, and did turn off my music.  However, I had a quick alarm set this morning, and the volume was still muted.  I'm not entirely sure it is the script since I'm running the beta control panel.

I got sound again off the chumby once I clicked the mute on and off.

Any ideas?  I love the idea of the script.

"#!" is called "shebang" - when you try to execute a text file, the operating needs more information about *how* to execute it.

The first line, if it begins with "#!", gives the name of the program that should be used to interpret the rest of the file.

Any other line that begins with "#" is interpreted as a comment (like "REM" in BASIC), if that's the syntax for comments for that language.

For more info, see this.

The crontab setting just means that the script runs as specified by the cron table.  In your case, every ten minutes from 10 pm to 11 pm.  If you were to start music playing after 11 pm, the script would not run and your volume would not decrease.  Incidentally, since your script runs only every ten minutes, if you were to start playing music at 10:51, your music would never stop since the last instance of the script would have stopped by then.

The "fade" time is dependent on your initial music volume.  The script decreases the /proc/chumby/audio/mixer/left-speaker/volume and /proc/chumby/audio/mixer/right-speaker/volume by 5 every five seconds.

Look at the script:

sleep $sleep_time * 60;
    my $vol = cat("/proc/chumby/audio/mixer/left-speaker/volume");

sleep (pause) for sleep_time minutes    // sleep is entered in seconds, so x seconds * 60 = x minutes.
set the "vol" variable to the current value of the chumby's speaker volume

    while ($vol > 0) {
        $vol -= 5;
        #warn $vol;
        $vol = 0 if $vol < 0;

as long as the volume is NOT muted (greater than zero,)
reduce the volume by 5.
if reducing the volume by 5 causes the volume to be negative (less than zero,) set the volume to zero.

        for my $lr (qw( left right )) {
            open my $fh, ">", "/proc/chumby/audio/mixer/$lr-speaker/volume";
            print $fh "$vol\n";
            close $fh;
        }
        sleep 5;

this part actually writes the value of the "vol" variable to /proc/chumby/audio/mixer/left-speaker/volume and /proc/chumby/audio/mixer/right-speaker/volume
then wait 5 seconds and return to the top of this block of code (while vol > 0)
Keep executing the code until vol is 0.

So that's basically how the "fade" part works.  If you want a longer fade, you need to either increase the "sleep 5," or decrease the amount taken from the volume each time ($vol -= 5) or both.  Just bear in mind that the script can't take away what's not there - if you go to bed with the volume at 40, then the stock script will take 40 / 5 * 5 = 40 seconds to fade.  If you want an hour, you should start by deciding what approximate volume you'll be using, then adjust accordingly.

# initial volume 60
# one hour fade time
sleep $sleep_time * 60;
    my $vol = cat("/proc/chumby/audio/mixer/left-speaker/volume");
    while ($vol > 0) {
        $vol -= 1;                          
        #warn $vol;
        $vol = 0 if $vol < 0;
        for my $lr (qw( left right )) {
            open my $fh, ">", "/proc/chumby/audio/mixer/$lr-speaker/volume";
            print $fh "$vol\n";
            close $fh;
        }
        sleep 60;

This takes one hour to fade from volume 60 - it decreases the volume by 1 every 60 seconds.  If your volume is higher, change the ($vol -= 1 ) to a larger number to make your sleep time correct.  To find your sleep volume in numerical terms, SSH into the Chumby, then type:

cat /proc/chumby/audio/mixer/left-speaker/volume

This will return your volume - divide by 60 to find out what your decrement ($vol -= x) amount should be.

Hope this helps.

"crontab" is just that - a table that contains cron jobs.  The settings in the table tell when to run the jobs, and the jobs can be anything executable, a program or script, etc.  We put the goodnight script in the table because we want it to run at certain times independent of any alarms - alarms are the other way of running a script at a certain time.  If we use a post_alarm_action, the script would run once, and if there was no music playing, nothing would happen.

It's been a very long time since I touched perl... but following on from this post, I have started to modify your script to use events sent to the Control Panel, which seems a cleaner interface... unless you beat me to it.

code fragment:

#!/usr/bin/perl
open my $fh, ">", "/tmp/flashplayer.event";
printf $fh "<event type=\"MusicPlayer\"\ value=\"stop\"\ comment=\"\"/>\n";
close $fh;
system "chumbyflashplayer.x -F1";

chumby:/psp/scripts# ./fred
Adobe FlashLite 3.0.4 Release (Version 8,1,55,0)- Chumby Industries (version 7 build 85-733 [GCC 4.1.2   Microcross GNU X-Tools(tm)])
Built for: ironforge; Features: Video ALSA DMA ARM-optimizations
Build time: Thu 17Jul2008 1235
chumbyflashplayer.x: sending signal 1 (SIGHUP) to running instance 2867
chumbyflashplayer.x: signal sent, process 2867 should still be running

That's next. I haven't touched perl since 1992... I need to get my creaky brain working & liberate an old O'Reilly zoo book.