设置Timer3 中断

1. void TIM3_INT_Config(void)
   : G, u, W( r2 @
2. {
   
3.    NVIC_InitTypeDef NVIC_InitStructure;
   
4. 
   ( f! j0 L6 D  [' c
5.   /* TIM3 clock enable */
   
6.   RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
   
7. 
   + `0 g5 l1 @1 o& N9 M. @
8.   /*  TIM3 ÖжÏǶÌ×Éè¼Æ*/
   
9.   NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
   # B  q& P: b2 h  n2 y
10.   NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
    
11.   NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    % g7 m! r( K5 K1 H# S$ P
12.   NVIC_Init(&NVIC_InitStructure);
    
13. }

复制代码

设置Timer3 模式
! |' k* s, ?" [0 k+ v5 K3 s) l9 H
$ e4 x& l2 ]' _4 z6 O

1. void TIM3_OUT_Config(void)
   
2. {   
   8 z: M- R8 l: H$ o0 k
3.     TIM_TimeBaseInitTypeDef  TIM3_TimeBaseStructure;
   
4.     TIM_OCInitTypeDef  TIM3_OCInitStructure;   
   
5.   /* ¼ÆËãÔ¤·ÖƵֵ */
   ' V& b1 b& D0 Q9 k1 k* y) Y. H
6.   TM3_PrescalerValue = (uint16_t) (SystemCoreClock  / TM3_PRESCALER) - 1;
   ' D5 T( S) T' B3 H
7. 
   ; \, o/ w. j" k& y% y/ `2 s
8.   /* Time ¶¨Ê±Æ÷»ù´¡ÉèÖà */
   
9.   TIM3_TimeBaseStructure.TIM_Period = 65535;
   
10.   TIM3_TimeBaseStructure.TIM_Prescaler = 0;
    
11.   TIM3_TimeBaseStructure.TIM_ClockDivision = 0;
    3 H* }8 }; G, p/ S" M" i6 h8 B3 W$ u! f
12.   TIM3_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    9 a5 T  n/ {# X
13. 
    
14.   TIM_TimeBaseInit(TIM3, &TIM3_TimeBaseStructure);
    0 Z' r1 }' U, B# }
15. 
    , g! Z0 b/ J& ?
16.   /* Ô¤·ÖƵÆ÷ÅäÖà */
    
17.   TIM_PrescalerConfig(TIM3, TM3_PrescalerValue, TIM_PSCReloadMode_Immediate);
    
18. 
    
19.   /* Êä³ö±È½ÏʱÐòģʽÅäÖÃÉèÖà */
    ! \. s/ m& f! J- |/ _8 D7 y
20.   TIM3_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;
    * X3 J6 Q8 d; J, |
21.   TIM3_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    
22. 
    ' ^+ t% I5 c- b2 w! B' C9 O6 z4 W% {
23.   /* Êä³ö±È½ÏʱÐòģʽÅäÖÃ: ƵµÀ3*/
    
24.   TIM3_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    6 g5 y8 x- H: q0 a( n
25.   TIM3_OCInitStructure.TIM_Pulse = TM3_CCR1_Val;  //3000
    
26.   TIM_OC3Init(TIM3, &TIM3_OCInitStructure);
    2 r5 V9 R3 M8 @6 @$ u) P1 I+ {
27.   TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Disable);
    4 ]5 e" x) P$ L9 @0 f
28. 
    4 `# g( M, G: U' y: F3 g$ Z, e
29.   /* TIM ÖжÏʹÄÜ */
    
30.   TIM_ITConfig(TIM3, TIM_IT_CC3 , ENABLE);
    
31. 
    
32.   /* TIM3 ʹÄÜ */
    
33.   TIM_Cmd(TIM3, ENABLE);
    
34. 
    ( V, @! x/ F4 g$ N( {& {, E* G/ q
35. }

复制代码

3. 中断子程序

3 Z: j( X# f( @2 c

1. void TIM3_IRQHandler(void)
   4 P0 |; @8 K$ A' O+ t
2. {
   
3.   if (TIM_GetITStatus(TIM3, TIM_IT_CC3) != RESET)
   : ]% c' ^5 @; p1 Q, T( `# O8 ^( ~
4.   {
   
5.     TIM_ClearITPendingBit(TIM3, TIM_IT_CC3);
   
6. 
   & F( R; j# x0 e# L2 Y* i
7.     /* LED3 toggling with frequency = 219.7 Hz */
   
8. //    LED1_Toggle();
   7 f2 P! j+ G/ a" ]" ]
9. //    capture3 = TIM_GetCapture3(TIM3);
   ( T% t+ m2 V9 N. t0 B  l
10. //    TIM_SetCompare3(TIM3, capture3 + TM3_CCR1_Val);
    $ @$ p% d$ A+ I# `4 F- D7 t1 e0 L
11. 
    ; l0 g, A8 d" _( B! F5 R
12.         OutToggle();
    
13. 
    $ _" l5 W% h9 V; |
14.         if(TimeRxFlag)
    
15.         {
    
16.             TimeInterval++;
    
17.             if(TimeInterval>4)
    0 [: M, k! e* r. D6 b6 E: L
18.             {
    ' ?6 L5 D( ~/ ]8 U4 }  _
19.                 RxFrameEndFlag =1;
    
20.             }
    
21.         }
    $ E1 j" m; W) F# N. ~
22.         if(KeyCtrl.bDebunceTime != 0)
    
23.         {
    3 l4 l2 s$ e, t% Y- w2 }
24.                 KeyCtrl.bDebunceTime--;
    
25.         }
    
26. //        SevenSegShow(DispBuffer);
    ) d+ _; r" j- @  _8 X7 Y
27.     capture3 = TIM_GetCapture3(TIM3);
    ( Z, y  M7 m# z2 |# f' O- S* D
28.     TIM_SetCompare3(TIM3, capture3 + TM3_CCR1_Val);
    
29.   }
    
30. }   

复制代码

# O* y) C4 z! h
* P/ w# L8 M; p