SysTick优先级在哪定义的

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楼主

怎么叫都可以|

楼主 | 2018-7-15 14:54 | 只看该作者回帖奖励

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systick, AD, IO, TE, se

找到了SysTick设置优先级的函数，默认设置优先级为0xF0,但是没找到调用的地方？
__STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks){
  if ((ticks - 1) > SysTick_LOAD_RELOAD_Msk)  return (1);    /* Reload value impossible */

  SysTick->LOAD  = ticks - 1;                               /* set reload register */
  NVIC_SetPriority (SysTick_IRQn, (1<<__NVIC_PRIO_BITS) - 1);  /* set Priority for Systick Interrupt */
  SysTick->VAL = 0;                                        /* Load the SysTick Counter Value */
  SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk |
               SysTick_CTRL_TICKINT_Msk |
               SysTick_CTRL_ENABLE_Msk;                   /* Enable SysTick IRQ and SysTick Timer */
  return (0);                                                 /* Function successful */
}

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