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E 回复于
@whycanservice 32.76的晶振起振了，不知道为啥我用示波器量24M的晶振波形的时候没有波形....我用的X10档位。换了个其他的板子32M的都能量出来。 USB线没有画反，虚焊这个我再焊接下试试吧。 再请教个问题，如果一切正常串口3会有打印输出吗？还是得刷上固件串口3才有输出？