虚拟手机识别电脑端串口

AppData\Local\Android\Sdk\emulator>
// 带串行通信设备启动 -selinux permissive宽容模式启动
emulator.exe -avd Medium_Phone_API_28 -writable-system -selinux permissive -qemu -serial COM3

adb.exe root
AppData\Local\Android\Sdk\platform-tools>adb shell
getenforce
generic_x86:/dev # chmod 777 /dev/ttyS1
generic_x86:/dev # chmod 777 /dev/ttyS2
generic_x86:/dev # chmod 777 /dev/ttyS3