On 18/06/2021 10:25, wangqia...@sugon.com wrote:
     1. Is it a bug?
     static inline CPU_Counter_ticks _CPU_Counter_difference(
         CPU_Counter_ticks second,
        CPU_Counter_ticks first)
     {
          return second - first;
     }
The CPU_Counter_ticks is an unsigned integer, so there should be no issue unless you want to measure intervals geater than the maximum of this integer type.

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