问答题
STM #SPCR20, SPSA0 STM #0081H, BSP0
对串口控制寄存器SPCR20赋值。串口使用软件模式,帧同步逻辑、采样率发生器复位,由发送准备好XRDY驱动发送中断;发送......
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STM #SPCR10, SPSA0 STM #0001H, BSP0
STM#0279H,TCR
问答题STM #0279H,TCR
RSBXINTM
问答题RSBX INTM