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参考开发板设计，FPGA 的SPI_FLASH_ 5脚，开机波形只有20MS，正常是1秒左右，原理图对照一遍，pcb走线也参考一样，不知道原因。希望给点提示
FPGA初始化失败了，大概率是硬件问题，也有可能是FLASH代码问题。
