請問在什麼情況下有可能會發生
我透過DXR1 送出資料
等待 SPCR2 BIT2(XEMPTY==0)
或是 SPCR2 BIT1 XRDY==1
但總XEMPTY都為1 (1 No transmitter-empty condition)
或是XRDY都為0 (0=Transmitter not ready)
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