用示波器量晶振没启振,硬件电路确定是好的(已经仔细检查很多遍了),电源也是正常的。DRDY一直是高电平,什么原因呢
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用示波器量晶振没启振,硬件电路确定是好的(已经仔细检查很多遍了),电源也是正常的。DRDY一直是高电平,什么原因呢