Linvincible wrote:
> Hi, yes I did change the first line to #!/bin/sh
> I thought the error message came from rights on the script itself but
> they didn't : it was the rights on files accessed inside that mattered.
> Weired, usually it says error at line x in these cases...
> Anyway I changed the rights to the files accessed and it works now.
>
> I just can't use shutdown command, any reason why?
>
> here's the script as it is now, may need a bit of refinement I'll submit
> it to the msldigital.com guys:
>
> #! /bin/sh
> # 22 is the GPIO pin receiving the shut-down signal
>
> sudo chown tc /sys/class/gpio/export
> sudo echo "22" > /sys/class/gpio/export
> sudo chown tc /sys/class/gpio/gpio22/direction
> sudo chown tc /sys/class/gpio/gpio22/value
> sudo echo "in" > /sys/class/gpio/gpio22/direction
> while true; do
>
> sleep 1
> power=$(cat /sys/class/gpio/gpio22/value)
> if [ $power != 0 ]; then
> sudo echo "out" > /sys/class/gpio/gpio22/direction
> sudo echo "1" > /sys/class/gpio/gpio22/value
> sudo poweroff
> fi
>
> done
hi Linvincible,
Can I first stay I am not a Linux expert, so I hope I am not misleading
you.
I am not 100% sure using sudo and changing ownership is the best
solution. Often assessing hardware is meant to be a root function. Here
is an example of "working" code I have used when testing a hardware
Pause/Play button on piCorePlayer. I can't remember if I initialised the
script by #sudo ./button & or #sudo su then #./button &.
Code:
--------------------
#!/bin/sh
player=started
echo "17" > /sys/class/gpio/export
echo "in" > /sys/class/gpio/gpio17/direction
while true
do
PRESSED=$(cat /sys/class/gpio/gpio17/value)
echo $PRESSED
sleep 1
if [ $PRESSED = 0 ]; then
if [ $player = stopped ]; then
echo "Start player"
echo "play" | telnet 192.168.1.101:9090
player=started
sleep 3
else
echo "Stop player"
echo "stop" | telnet 192.168.1.101:9090
player=stopped
sleep 3
fi
fi
done
echo "17" > /sys/class/gpio/unexport
exit
--------------------
Some GPIO extensions put a wrapper around the basic GPIO operations and
may allow non-root access.
I prefer to use this piCore code to shutdown piCorePlayer.
Code:
--------------------
exitcheck.sh
--------------------
regards
Greg
------------------------------------------------------------------------
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