02 System auto-start service

This document uses systemd to implement system startup scripts or programs

1 System auto-start service added to firmware

First, you need to mount the root directory system files. For detailed instructions, see "VI. Others → 01 Modification of the root directory file system"

# 进入挂载目录
sudo chroot /mnt/GM_3568JHF_root /bin/bash

# vim 创建或打开系统文件，编辑系统自启服务（以 rotate_screen.service 为例）
vim /etc/systemd/system/rotate_screen.service

# 编辑完成后，退出 vim，启用系统服务
systemctl enable rotate_screen.servic

# 取消挂载
sudo umount -l /mnt/GM_3568JHF_root

After completing the above operations, burn the image into the development board to realize the system self-start service

2 Manually configure system startup services

Power on the development board and execute the following command

# 在 /etc/systemd/system/ 目录下，创建服务配置文件
sudo vim /etc/systemd/system/rotate_screen.service

# 编辑完成后，重新加载系统服务
sudo systemctl daemon-reload

# 启用服务
sudo systemctl enable rotate_screen.service

#启动服务
sudo systemctl start rotate_screen.service

Check whether the development board has started the service. If it has started normally, restart the development board to check whether the service can be started normally.