问答题
STM #SPCR20, SPSA0 ORM #01000001B, BSP0
修改串口控制寄存器SPCR20的值。由采样率发生器产生帧同步信号,使能串口发送器。
问答题 STM #SPCR20, SPSA0 STM #0081H, BSP0
问答题 STM #SPCR10, SPSA0 STM #0001H, BSP0
问答题 STM#0279H,TCR