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RTOS|AM437x TimerModule定时中断不准问题



开发板:AM437x IDK
开发环境:CCS6、TI-RTOS
问题:通过SYS/BOIS使能Timer Module,并以cfg方式创建定时中断,代码如下:

var timerParams = new Timer.Params(); timerParams.period = 200; timerParams.periodType = Timer.PeriodType_MICROSECS; timerParams.arg = 1; Timer.create(null, '&Timer200us_Int', timerParams);

实际运行定时中断频率比200us快,约为166us,请问如何解决?