设置Timer3 中断
# E9 ]9 ]$ E l+ y1 R# k- void TIM3_INT_Config(void)
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- NVIC_InitTypeDef NVIC_InitStructure;, G6 @5 C [8 X* s0 B, p3 e6 a
! ~7 J4 a- d# J& o- /* TIM3 clock enable */
# T9 d- n8 P! b% D$ J: ] - RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
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; e) |) Q6 r% a& J3 j# f* ?5 L- /* TIM3 ÖжÏǶÌ×Éè¼Æ*/
+ V5 ?, P! h5 ?6 A& N+ A - NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; v& P- s) D1 Q/ u& H, {
- NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
/ S( d. ]1 B% T. e - NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
3 Y2 F6 B2 S& V5 v, ]: Z - NVIC_Init(&NVIC_InitStructure);
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3 B4 u4 N9 l, ?( \) L设置Timer3 模式
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8 ]5 @! v# ^$ [6 `, K- void TIM3_OUT_Config(void)' l, A" H/ p3 H1 u, T4 t
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* W$ p1 s% \4 V/ t N, e - TIM_TimeBaseInitTypeDef TIM3_TimeBaseStructure;
7 v4 A% n' n$ W/ }, Z* z g* L - TIM_OCInitTypeDef TIM3_OCInitStructure; ' ^ j B$ |6 w" q* o1 |0 K7 W
- /* ¼ÆËãÔ¤·ÖƵֵ */4 u* Q" ~ _9 S: [5 I2 U6 S
- TM3_PrescalerValue = (uint16_t) (SystemCoreClock / TM3_PRESCALER) - 1;# h- q5 R1 x. X' {1 _3 o+ O7 k
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- /* Time ¶¨Ê±Æ÷»ù´¡ÉèÖà *// X1 ~4 k9 Z9 |# {* A* W
- TIM3_TimeBaseStructure.TIM_Period = 65535;: @8 R8 j! f, I S# G1 S
- TIM3_TimeBaseStructure.TIM_Prescaler = 0;- i2 R. b; G4 ^' i4 u& x+ T$ A
- TIM3_TimeBaseStructure.TIM_ClockDivision = 0;
H2 O9 i: k3 l/ j0 ` - TIM3_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
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" _9 x6 I/ z+ v# ], s" x- TIM_TimeBaseInit(TIM3, &TIM3_TimeBaseStructure);
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5 Z4 t. M' z; v7 z' q: Y# \- /* Ô¤·ÖƵÆ÷ÅäÖà */, d6 ?+ X% l! n8 g5 @
- TIM_PrescalerConfig(TIM3, TM3_PrescalerValue, TIM_PSCReloadMode_Immediate);
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- /* Êä³ö±È½ÏʱÐòģʽÅäÖÃÉèÖà */+ J9 ~6 w: x( J) W) Y
- TIM3_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;+ ^* ?5 B% v. `
- TIM3_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;# r; y! P) }8 c& c7 l
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- /* Êä³ö±È½ÏʱÐòģʽÅäÖÃ: ƵµÀ3*/
; |$ g% a: K0 T3 Y. W: y - TIM3_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
/ h, W, T/ I8 w; P - TIM3_OCInitStructure.TIM_Pulse = TM3_CCR1_Val; //3000' q6 p9 H6 t1 l% a. p
- TIM_OC3Init(TIM3, &TIM3_OCInitStructure);
4 i- |1 j; c( Q - TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Disable);
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- /* TIM ÖжÏʹÄÜ */
# N. j# { t* ]$ A7 e8 K - TIM_ITConfig(TIM3, TIM_IT_CC3 , ENABLE);
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- /* TIM3 ʹÄÜ */
2 w0 |% q* U3 E - TIM_Cmd(TIM3, ENABLE);9 d9 f a9 S4 Y5 r# P4 o
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3. 中断子程序
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) K" Q/ | L, W% t( x0 B- void TIM3_IRQHandler(void)
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- if (TIM_GetITStatus(TIM3, TIM_IT_CC3) != RESET)2 k2 b+ w8 |- y4 h* v& D- A
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- TIM_ClearITPendingBit(TIM3, TIM_IT_CC3);: n2 y; G% ~7 W# I7 g
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- /* LED3 toggling with frequency = 219.7 Hz */2 I. I# U/ a. D
- // LED1_Toggle();
- Z, ]9 B7 u( n7 K2 B2 w& v- a - // capture3 = TIM_GetCapture3(TIM3);
, w- C, c! I9 }/ X, k# w - // TIM_SetCompare3(TIM3, capture3 + TM3_CCR1_Val);& p8 e% v4 x/ _, f4 k; F% u$ v6 z
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- OutToggle();
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2 N6 f6 S* a6 G, y- if(TimeRxFlag)
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- TimeInterval++;
. f3 t8 {9 i2 S$ f3 D - if(TimeInterval>4)
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- RxFrameEndFlag =1;
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- if(KeyCtrl.bDebunceTime != 0)
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- KeyCtrl.bDebunceTime--;8 h% ]$ w$ y# u* M( \7 C
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- // SevenSegShow(DispBuffer);
* Z7 @: J* a, v# L0 O - capture3 = TIM_GetCapture3(TIM3);$ p$ w1 ~6 e( [ Q9 b4 k. N
- TIM_SetCompare3(TIM3, capture3 + TM3_CCR1_Val);
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