自己写的verilog贪吃蛇程序，使用vivado2015.2软件编写综合的，硬件平台是xilinx的basys3平台，当检测到碰撞时，led灯会亮起-Write your own verilog Snake program, using the software to prepare a comprehensive vivado2015.2, the hardware platform is the basys3 xilinx platform, when a collision is det