1、安装git

yum install -y git

2、下载

git clone https://github.com/dji-sdk/Payload-SDK

3、若遇到

centos 7 git clone 报错：fatal: unable to access

解决方法：
3.1、
打开/etc/hosts文件；命令：sudo vim /etc/hosts
3.2、
添加下面的内容到文件末尾，保存退出即可
（vi指令：i进入编辑，exit退出编辑，:wq保存编辑并退出）

# GitHub Start 
140.82.113.3      github.com
140.82.114.20     gist.github.com
151.101.184.133    assets-cdn.github.com
151.101.184.133    raw.githubusercontent.com
151.101.184.133    gist.githubusercontent.com
151.101.184.133    cloud.githubusercontent.com
151.101.184.133    camo.githubusercontent.com
151.101.184.133    avatars0.githubusercontent.com
199.232.68.133     avatars0.githubusercontent.com
199.232.28.133     avatars1.githubusercontent.com
151.101.184.133    avatars1.githubusercontent.com
151.101.184.133    avatars2.githubusercontent.com
199.232.28.133     avatars2.githubusercontent.com
151.101.184.133    avatars3.githubusercontent.com
199.232.68.133     avatars3.githubusercontent.com
151.101.184.133    avatars4.githubusercontent.com
199.232.68.133     avatars4.githubusercontent.com
151.101.184.133    avatars5.githubusercontent.com
199.232.68.133     avatars5.githubusercontent.com
151.101.184.133    avatars6.githubusercontent.com
199.232.68.133     avatars6.githubusercontent.com
151.101.184.133    avatars7.githubusercontent.com
199.232.68.133     avatars7.githubusercontent.com
151.101.184.133    avatars8.githubusercontent.com
199.232.68.133     avatars8.githubusercontent.com
# GitHub End

4、然后再按照第二步下载就行