使用msp430f5255，系统配置如下：MCLK=SMCLK=12M，串口波特率115200，时钟源是SMCLK=12M，裸跑时，串口接收大量数据没有问题。跑了实时系统后，串口接收数据，有时一帧数据会出现漏1-2个字节的情况。照理串口115200的波特率，接收一个字节是500us，我实时系统时钟节拍是10ms中断一次产生系统心跳，应该不会出现中断嵌套，导致串口接收数据不完整的情况。请问大家有可能是什么问题？
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