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CAN通信问题



求教各位大师,我的DSP与ARM通信中,DSP发送一直卡在等待TA置位的死循环中,观察寄存器发现CANES的SE与SMA均置1,即发生填充错误与挂起模式被激活,书上说挂起模式激活是因为电路没有运行。请问是什么问题啊??