利用stm32f407作为测试板，利用IO和精确的延时（这个延时方式任意）来模拟FIFO时序来达到和FPGA的FIFO模块进行通信。测试时用的是Altera的FPGA的FIFO模块。-Stm32f407 use as a test board, the use of IO and accurate delay (the delay in any way) to simulate FIFO timing to achieve and FPGA FIFO module to communicate. When the test is used in Altera' s FPGA' s FIFO module.