linux下nrf2401的驱动，主控芯片是友善的tiny4412开发板，没有使用spi驱动，而是用的io模拟-nrf2401 under linux drivers, the main chip is friendly tiny4412 development board, without using spi-driven, but with the io simulation

在TINY4412开发板上，跑的裸机流水灯程序，初学者可以看看(In the TINY4412 development board, run the bare light water program)

arm平台上用的轻量级服务器,在友善之臂tiny4412上测试成功(Lightweight servers used on the arm platform)