major和minor值仍可用于修改命令码。
The major and minor values can still be used to modify a command code.
软件部分主要实现PW M脉宽调速和命令码识别。
Software part mainly realizes PWM speed adjustment and identify of command code.
通过切换命令码的状态,系统可分别工作在信标和应答状态下。
Switching the state by the order code, the system can be in the state of beacon or response.
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