@jr_online请问如何用命令行调整背光亮度? 中说:

mount -t debugfs none /sys/kernel/debug;
cd /sys/kernel/debug/dispdbg;

#背光0
echo lcd0 > name; echo setbl > command; echo 0 > param; echo 1 > start

#背光255
echo lcd0 > name; echo setbl > command; echo 255 > param; echo 1 > start

A133 调整背光成功。