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用过6747的朋友给指点下：遇到的情况是为什么定时器，管脚都可中断,就是串口不能中断,该使能的都使能了啊！！！到底是什么情况啊？先行谢过了 。
21ic TI DSP论坛问题
先单步一下，当串口事件发生时，查看串口中断的标志位有没有被置位？
