利用NRF24L01+无线模块，使两块STM32开发板实现无线传输数据。主机首先向从机发送数字，从机接收到后，把该数字打印到终端，并对该数字+1。然后从机把+1后的数字发送给主机，主机收到后再把该数字发送到从机，如此循环。-Use NRF24L01+ wireless module so that two STM32 development board for wireless transmission of data. First, the host sends to the digital, after receiving　the machine to put the digital printing to the terminal, and this figure+1. The slave then after digital+1 sent to the host, the host receives this number and then sent to the slave, and so on.