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上位机波特率设置错误导致下位机28335串口崩溃

串口助手波特率设置错误,发送指令后,会导致DSP28335芯片串口崩溃,当串口助手设置回正确波特率时,DSP无法接收数据,请教各位大佬有何方法避免上位机波特率设置错误,导致DSP串口奔溃?谢谢