我使用controlSUITE（C:\ti\controlSUITE\device_support\F2837xD\v210\F2837xD_examples_Cpu1\sci_echoback）目录下的cpu01例程做串口通信，发现只有上位机发数据给MCU时，MCU才发数据；如何改成发送和接收分开？
因为目前上位机发送一帧数据后，MCU才发出一帧数据！谢谢！
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