用VHDL编写的一个SPI主机程序，SPI模块采用最常用的模式0方式（即CPOL=0,CPHA=0）通信。文件内含测试文档，已在Modelsim6.5上测试通过，可在FPGA上直接调用。-A SPI Master code edited by VHDL language,the SPI modul use 0 MODE(i.e CPOL=0,CPHA=0)to communicate with the SPI Slave.and there is a testbench in the file

Implement SPI Master and SPI Slave cores (VHDL) Implement Master and Slave hosts (VHDL) Verify the entire design (SystemVerilog)

simple spi slave operating in mode 0 in VHDL.

VHDL 语言实现的串转并 SPI 等等 实现-The SPI bus is a 3 wire bus that in effect links a serial shift-- register between the master and the slave . Typically both the-- master and slave have an 8 bit shift register so the combined-- register is 16 bits. Whe