When using a beaglebone with LCD7, there are many flashing lights...
After loging into the serial console I changed to runlevel 3 to get
rid of the running X11 GUI. The lesser is running on the bone the
lesser can interfer with the following
Since the whole thing seems to take some time, I want to switch
off the backlight of the LCD7...and if possible other lights like
the ever blinking LEDs...
How can I accomplish this?
Thank you very much in advance for any help!
Hope this tidbit helps you out…
root@omap:/sys/class/backlight/pwm-backlight# echo 100 > brightness
root@omap:/sys/class/backlight/pwm-backlight# echo 50 > brightness
Turn it off…
root@omap:/sys/class/backlight/pwm-backlight# echo 0 > brightness
(yes, I had to go as a super user as I am running Ubuntu)
And as far for those lights…
in the /sys/class/leds directory… (again may have to do this with superuser privileges for now… esp. if you use Ubuntu)…
… you will see :
beaglebone::usr0 beaglebone::usr2 lcd7::usr
and for example on the user light on the lcd7::usr…
give this a try :
echo 0 > brightness to turn it off,
echo 100 > brightness to turn it on…
to make that same light work as a mmc1 activity light : echo mmc0 > trigger
Actually, try cat trigger to explore other options. What you have in [ brackets ] in that file, is what the option is.
The same idea applies to beaglebone::usr1 thru 3 block device directories too.
The first thing I did when I got my BBone up and running was trying to figure out how to stop that flashing light. Apparently, you can make the lights blink with a timer (out of my league for now!), as a heartbeat, as an indicator for your network. Again, like I mentioned, cat trigger (to display your options) can give you some info. That’s all I know for now as I’m also a beginner with not much experience.
Hope it helps. Cheers!