RK3399FanControl/zh

设置PWM风扇的行为

默认情况下，风扇的转速是根据cpu温度动态调整的，如果需要取消温控，让风扇一直处于运行状态，可以把脚本 /usr/bin/start-rk3399-pwm-fan.sh 修改成以下内容来实现：

#!/bin/bash
 
echo 0 > /sys/class/pwm/pwmchip1/export
sleep 1
echo 0 > /sys/class/pwm/pwmchip1/pwm0/enable
echo 50000 > /sys/class/pwm/pwmchip1/pwm0/period
echo 1 > /sys/class/pwm/pwmchip1/pwm0/enable
echo 45000 > /sys/class/pwm/pwmchip1/pwm0/duty_cycle