GD32F103RCT6系統(tǒng)計時器初始化代碼寄存器版

ID:939250 · 發(fā)表于 2021-6-17 13:48

void SysTickInit(void)
{
  uint32_t tmp = SYSTEM_CLK_M*1000000;    //系統(tǒng)時鐘頻率
  SysTick->LOAD  = tmp/UserSysTickHz - 1;  //tick計時器初始值  1ms中斷一次
  NVIC_SetPriority (SysTick_IRQn, (1<<__NVIC_PRIO_BITS) - 1);
  SysTick->VAL = 0;
  SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk |
               SysTick_CTRL_TICKINT_Msk |
               SysTick_CTRL_ENABLE_Msk;

  NVIC_SetPriority(SysTick_IRQn, 0x00U);
}

void SysTick_Handler(void)          //中斷處理
{
if (0U != delay){
      delay--;
}
   TimeBase1ms = 1;
CO2SensorGetData();
}

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