Embest Technology
Copyright © 2014-2015 Embest Technology SBC9000 User Manual
68
64 bytes from 180.97.33.107: seq=3 ttl=54 time=35.776 ms
^C
--- www.baidu.com ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 35.663/36.443/38.501 ms
Note:
PCI-E interface does NOT support hot plugging.
6.15 Backlight Test
The brightness of the backlight is ranged from 0 to 7. 0 indicates turning off the backlight,
while 7 means the highest brightness.
6.15.1 LCD Backlight Test
1
）
Execute the following instruction to view the current brightness value;
root@sbc9000:~#
cat /sys/class/backlight/backlight-lcd.27/brightness
2
）
Execute the following instruction to turn off LCD backlight;
root@sbc9000:~#
echo 0 > /sys/class/backlight/backlight-lcd.27/brightness
3
）
Execute the following instruction to set the backlight to the highest brightness;
root@sbc9000:~#
echo 7 > /sys/class/backlight/backlight-lcd.27/brightness
6.15.2 Capacitive Touchscreen Backlight Test
1
）
Execute the following instruction to view the current brightness value;
root@sbc9000:~#
cat /sys/class/backlight/backlight-ldb.28/brightness
2
）
Execute the following instruction to turn off backlight;
root@sbc9000:~#
echo 0 > /sys/class/backlight/backlight-ldb.28/brightness
3
）
Execute the following instruction to set the backlight to the highest brightness;
root@sbc9000:~#
echo 7 > /sys/class/backlight/backlight-ldb.28/brightness
