RS422协议芯片OX16C950底层驱动程序，Verilog语言编写，Quartus ii 15.0开发，可实现数据收发，用串口调试助手可以观察。-RS422 protocol chip OX16C950 low-level driver, Verilog language, Quartus ii 15.0 development, can achieve data transceiver, with the serial debugging assistant can be observed