计时器如何间隔配置TIM2？

斯科特，
 
 当STM8L151暂停时，其定时器也会暂停，因此使用TIMx不可能每30秒产生一次中断。
 这并不意味着STM8L151无法满足您的需求。
 您应该使用RTC，启用其独立RC振荡器或32768 Hz外部谐振器，并配置RTC警报。
 
 问候
 
 EtaPhi



以下为原文





Scott,

when a STM8L151 is halted, its timers are halted too, so it's impossible to generate an interrupt every 30 seconds with TIMx.
This doesn't mean that a STM8L151 can't provide what you need.
You should use the RTC, enable its indipendent RC oscillator or an 32768 Hz external resonator, and configure a RTC alarm.

Regards

EtaPhi

谢谢你的回复。我实际上错误地说明了睡眠模式。 MCU处于等待中断状态而不是暂停状态。我已经能够每1ms生成一次中断，但假设通过将计数器设置为30000，它将等待30秒。例如：
 
 
static void InitDelay2（）
{
 //启用TIM4时钟
 CLK_PeripheralClockConfig（CLK_Peripheral_TIM2，ENABLE）;
 
 //时基配置（~1ms）
 TIM2_TimeBaseInit（TIM2_Prescaler_128，TIM2_CounterMode_Down，U8（125））;
 
 TIM2_SetCounter（30000）;
 
 //不要重复
 TIM2_SelectOnePulseMode（TIM2_OPMode_Single）;
 
 //启用更新中断
 TIM2_ITConfig（TIM2_IT_Update，ENABLE）;
 
 //启动计时器
 TIM2_Cmd（ENABLE）;
}
 
我也将研究设置RTC。



以下为原文





Thanks for response. I actually misstated the sleep mode. The MCU is in wait-for-interrupt as opposed to halt. I've been able to generate an interrupt every 1ms, but was assuming that by setting the counter to 30000, it would wait for 30s. For example:


static void InitDelay2()
{
   // Enable TIM4 clock
   CLK_PeripheralClockConfig(CLK_Peripheral_TIM2, ENABLE);
  
  // Time base configuration (~1ms)
  TIM2_TimeBaseInit(TIM2_Prescaler_128, TIM2_CounterMode_Down, U8(125));

  TIM2_SetCounter(30000);

  // No repeat
  TIM2_SelectOnePulseMode(TIM2_OPMode_Single);

  // Enable update interrupt
  TIM2_ITConfig(TIM2_IT_Update, ENABLE);
  
  // Start timer
  TIM2_Cmd(ENABLE);
}




I'll look into setting the RTC, as well.

RTC工作正常。我配置了LSI时钟源。它似乎更接近36KHz而不是38KHz。我不需要准确的时间，所以这很好。再次感谢您的帮助。



以下为原文





RTC is working fine. I've configured LSI clock source. It seems closer to 36KHz rather than 38KHz. I don't need exact timing, so this is working fine. Thanks again for the help.