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  1. #ifndef _PIT_H_
  2. #define _PIT_H_
  3. #define DEMO_PIT_CHANNEL kPIT_Chnl_0
  4. #define PIT_SOURCE_CLOCK CLOCK_GetFreq(kCLOCK_BusClk) //得到PIT BusClk时钟频率
  5. #define USEC_TO_COUNT(us, clockFreqInHz) (uint64_t)(((uint64_t)(us) * (clockFreqInHz)) / 1000000U)
  6. void Pit_MyInit();
  7. #endif