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在执行boot_serial时，一到红线的部分时就调到错误函数FaultISR，这要怎么改？谢谢
这句的意思是等待FIFO的数据。我怀疑这个寄存器无法观看，而不是其他问题。你是全速运行还是加断点了，全速运行到这里就停止了吗？
