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DM6467实现定时发现有误差。



HI:

大家好,我使用的是TI DM6467T平台。

本人想在裸机下实现DM6467平台的精确定时,我通过TIMER0实现了中断定时,定时时间为1ms,但发现定时1ms就有些误差。

通过GPIO的输出观察定时,在进行定时50ms通过示波器发现有3ms误差,如果100ms的话有6-7ms的误差。

如果1S的话,误差更加大。

请问TI员工,我该怎么实现精确定时??谢谢了。。。。