2.4 GHz无线鼠标键盘接收器的设计

针对RF无线鼠标传输速度慢、传输距离有限的缺点，提出了一种2.4 GHz无线鼠标键盘接收器的设计方案。采用USB多媒体键盘编码器HT82K95E和射频收发器nRF24L01进行设计，以HT82K95E为核心，完成HID设备的枚举过程。控制器利用普通I/O口模拟SPI总线，完成了与无线收发模块的数据交换。采用nRF24L01无线通信协议中的Enhanced ShockBurst收发模式，数据低速输入，但高速发射，从而实现了鼠标键盘复合设备与主机间的无线通信功能。试验结果表明，由于采用了2.4 GHz无线技术，该无线鼠标键盘接收器能够有效传输距离可达10 m，大大降低功耗，增强了抗干扰性能。

Abstract:

 Due to the disadvantage of RF wireless mouse?蒺s low-speed transmission and limited transmission distance, this paper proposed a new design of a 2.4GHz wireless mouse and keyboard receiver，The system which adopted USB multi media keyboard encoder HT82K95E and RF transceiver nRF24L01 took HT82K95E as the core to complete the enumeration process of the HID equipment. By taking advantage of ordinary I/O port to simulate SPI bus, the controller exchanged data with the wireless transceiver module. It used the enhanced shockBurstTM transceiver mode of the NRF24L01 wireless communication protocol which allowed low-speed data input, but high-speed launched, and realized the wireless communication function between the mouse and keyboard composite equipment with the host. Due to the using of 2.4GHz wireless technology, the results show that the receiver can reach 10-meter effective transmission distance, greatly reduce the power and enhance the anti-interference performance.