标签：style devices 创建 开启 publish redis led col The
英伟达的jetson xavier 或者NX打开风扇都是通过修改下面的文件实现的。
vim /sys/devices/pwm-fan/target_pwm
或者直接
sudo sh -c "echo 150 > /sys/devices/pwm-fan/target_pwm"
但是修改上述文件的时候，重启之后失效，因此可以通过设置开启自启动的方式使风扇的设置重启继续生效，下面简单说一下步骤
1.修改 /sys/devices/pwm-fan/target_pwm文件权限
sudo chmod 777 /sys/devices/pwm-fan/target_pwm
2.将 /lib/systemd/system/rc-local.service 链接到 /etc/systemd/system/ 目录下面来
sudo ln -fs /lib/systemd/system/rc-local.service /etc/systemd/system/rc-local.service
3.查看文件内容
cd /lib/systemd/system ls -lh sudo vim rc.local.service
在末尾添加[install字段]，如下：
# This file is part of systemd. # # systemd is free software; you can redistribute it and/or modify it # under the terms of the GNU Lesser General Public License as published by # the Free Software Foundation; either version 2.1 of the License, or # (at your option) any later version. # This unit gets pulled automatically into multi-user.target by # systemd-rc-local-generator if /etc/rc.local is executable. [Unit] Description=/etc/rc.local Compatibility ConditionFileIsExecutable=/etc/rc.local After=network.target [Service] Type=forking ExecStart=/etc/rc.local start TimeoutSec=0 RemainAfterExit=yes [Install] WantedBy=multi-user.target Alias=rc-local.service
4.创建/etc/rc.local文件，并添加权限
touch /etc/rc.local
chmod 777 /etc/rc.local
5.编辑rc.local
vim /etc/rc.local
然后在rc.local中添加如下内容
echo “150” > /sys/devices/pwm-fan/target_pwm
6.然后reboot 查看/sys/devices/pwm-fan/target_pwm内容
nvidia jetson xavier打开风扇，并设置开机启动
标签：style devices 创建 开启 publish redis led col The
原文地址：https://www.cnblogs.com/cumtchw/p/13215565.html
