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FAQs (Axel)

1,233 bytes added, 08:53, 4 October 2016
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=== Q: How can I read the CPU temperature? ===
'''A''': CPU temperature is reported by the Anatop Thermal driver. To read the he temperature, enter this command from the Linux shell:
<pre class="board-terminal">
CPU temperature is shown without decimal point, but the latest three digits are decimal.
 
=== Q: How can I adjust LCD brightness? ===
 
'''A''': brightness level can be changed via sysfs entry. To read the current brightness level, enter this command from the Linux shell:
 
<pre class="board-terminal">
root@axel-lite:~# cat /sys/class/backlight/backlight.30/brightness
75
</pre>
 
To set a new brightness level, enter this command from the Linux shell (100 is an example):
 
<pre class="board-terminal">
root@axel-lite:~# echo 100 > /sys/class/backlight/backlight.30/brightness
</pre>
 
Max value accepted for brightness can be read entering the following commands:
 
<pre class="board-terminal">
root@axel-lite:~# cat /sys/class/backlight/backlight.30/max_brightness
</pre>
 
'''N.B.''' The brightness index is related to the kernel and dtb compiled version. I.e. in the example index .30 maybe different on your system.
 
The right index can be found entering the following command from Linux shell:
 
<pre class="board-terminal">
root@xelk-l:~# ls -la /sys/class/backlight/
drwxr-xr-x 2 root root 0 Jun 13 11:50 .
drwxr-xr-x 50 root root 0 Jan 1 1970 ..
lrwxrwxrwx 1 root root 0 Jun 13 11:50 backlight.30 -> ../../devices/soc0/backlight.30/backlight/backlight.30
</pre>
=== Q: How can I modify the splash screen in U-Boot? ===
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