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ccs5.4 运行时间检测问题



我通过run->clock->enable看程序运行时间,用F6运行子程序后时间对不上。比如:单步将子程序跑过需要43时钟计数,通过F6确需要6534时钟计数。这是哪里出了问题?

 还有我用PWM中断触发设置为ET_CTR_ZERO零点触发,假设定的100us中断,如果给中断程序里打断点,间隔时间只有25us。。