uart协议、实现、验证，基于wishbone协议，工业标准为16550A-UART protocol, implementation, verification, based on the Wishbone protocol, the industry standard for the 16550A

VHDL语言写的UART通信接收端程序，适用于RS232协议-VHDL language the receiving end of the UART communication procedures, applicable to RS232 protocol

基于FPGA的SPI协议控制器的设计，主要针对主控制器的设计，采用VHDL语言编写的。-The SPI protocol controller based on FPGA design, mainly for the design of the main controller, using VHDL language.