diff --git a/readme.txt b/readme.txt
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index 0000000..a438496
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+1、串口配置路径
+/home/DJI/Settings/HardwareSettings.ini
+2、根据usb插口固定串口
+KERNELS=="4-1.3:1.0", SUBSYSTEMS=="usb", MODE:="0777", SYMLINK+="wind"
+KERNELS=="4-1.2:1.0", SUBSYSTEMS=="usb", MODE:="0777", SYMLINK+="gas"
+KERNELS=="4-1.1:1.0", SUBSYSTEMS=="usb", MODE:="0777", SYMLINK+="uav"