实现蓝牙串口接口和NRf2401无线模块接口的互转，上位机通过蓝牙连接到该设备，该设备通过Nrf2401模块连接到控制装置。可以大大延长上位机的控制距离。(The mutual transfer of the Bluetooth serial port and the NRf2401 wireless module is realized. The upper computer connects to the device through Bluetooth. The device is con