本实验的实现功能：上电后模块向电脑串口发出问候语，由串口向模块发送不大于30个字符的字符串，末尾加#结束，模块会返回相同的字符串，波特率为57600。适用于zigbee开发。-Implementation features of this experiment: After power module to the computer serial port greeting sent by the serial port to the module sends no more than 30 ch