设置Timer3 中断

1. void TIM3_INT_Config(void)
   
2. {
   
3.    NVIC_InitTypeDef NVIC_InitStructure;
   
4. 
   
5.   /* TIM3 clock enable */
   
6.   RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
   
7. 
   
8.   /*  TIM3 ÖжÏǶÌ×Éè¼Æ*/
   
9.   NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
   
10.   NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
    
11.   NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    
12.   NVIC_Init(&NVIC_InitStructure);
    
13. }

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设置Timer3 模式

1. void TIM3_OUT_Config(void)
   
2. {   
   
3.     TIM_TimeBaseInitTypeDef  TIM3_TimeBaseStructure;
   
4.     TIM_OCInitTypeDef  TIM3_OCInitStructure;   
   
5.   /* ¼ÆËãÔ¤·ÖƵֵ */
   
6.   TM3_PrescalerValue = (uint16_t) (SystemCoreClock  / TM3_PRESCALER) - 1;
   
7. 
   
8.   /* Time ¶¨Ê±Æ÷»ù´¡ÉèÖà */
   
9.   TIM3_TimeBaseStructure.TIM_Period = 65535;
   
10.   TIM3_TimeBaseStructure.TIM_Prescaler = 0;
    
11.   TIM3_TimeBaseStructure.TIM_ClockDivision = 0;
    
12.   TIM3_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    
13. 
    
14.   TIM_TimeBaseInit(TIM3, &TIM3_TimeBaseStructure);
    
15. 
    
16.   /* Ô¤·ÖƵÆ÷ÅäÖà */
    
17.   TIM_PrescalerConfig(TIM3, TM3_PrescalerValue, TIM_PSCReloadMode_Immediate);
    
18. 
    
19.   /* Êä³ö±È½ÏʱÐòģʽÅäÖÃÉèÖà */
    
20.   TIM3_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;
    
21.   TIM3_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    
22. 
    
23.   /* Êä³ö±È½ÏʱÐòģʽÅäÖÃ: ƵµÀ3*/
    
24.   TIM3_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    
25.   TIM3_OCInitStructure.TIM_Pulse = TM3_CCR1_Val;  //3000
    
26.   TIM_OC3Init(TIM3, &TIM3_OCInitStructure);
    
27.   TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Disable);
    
28. 
    
29.   /* TIM ÖжÏʹÄÜ */
    
30.   TIM_ITConfig(TIM3, TIM_IT_CC3 , ENABLE);
    
31. 
    
32.   /* TIM3 ʹÄÜ */
    
33.   TIM_Cmd(TIM3, ENABLE);
    
34. 
    
35. }

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3. 中断子程序

1. void TIM3_IRQHandler(void)
   
2. {
   
3.   if (TIM_GetITStatus(TIM3, TIM_IT_CC3) != RESET)
   
4.   {
   
5.     TIM_ClearITPendingBit(TIM3, TIM_IT_CC3);
   
6. 
   
7.     /* LED3 toggling with frequency = 219.7 Hz */
   
8. //    LED1_Toggle();
   
9. //    capture3 = TIM_GetCapture3(TIM3);
   
10. //    TIM_SetCompare3(TIM3, capture3 + TM3_CCR1_Val);
    
11. 
    
12.         OutToggle();
    
13. 
    
14.         if(TimeRxFlag)
    
15.         {
    
16.             TimeInterval++;
    
17.             if(TimeInterval>4)
    
18.             {
    
19.                 RxFrameEndFlag =1;
    
20.             }
    
21.         }
    
22.         if(KeyCtrl.bDebunceTime != 0)
    
23.         {
    
24.                 KeyCtrl.bDebunceTime--;
    
25.         }
    
26. //        SevenSegShow(DispBuffer);
    
27.     capture3 = TIM_GetCapture3(TIM3);
    
28.     TIM_SetCompare3(TIM3, capture3 + TM3_CCR1_Val);
    
29.   }
    
30. }   

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