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TMS320F28075: DSP在仿真状态下,通过看门狗复位前,sci接收数据都是正常的;复位后,通过SCI助手发的任何数据,DSP解析都是0xFF。示波器加在SCIRX端口解析数据比如是0x23,实际DSP接收的确是0xFF

Part Number: TMS320F28075

手动触发看门狗复位前,尝试通过串口发送0x23,读取正常:

手动触发看门狗方式复位芯片后,串口发送0x23后,读取异常,尝试发送其他任何数据,DSP读出来都是0xFF:

请问出现这种情况如何解决?