基于NRF24L01的51开发板源程序，功能如下：按下开发板的按键，对应的LED灯将点亮，同时另外一块开发板将接收到的键值数据通过串口发 送到PC并在串口调试工具上实时显示。 -Based on the 51 development board NRF24L01 source, function is as follows: press the key development board, the corresponding LED lights will be lit at the sam