重映射问题

李晋南

1. 
   

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李晋南

1. static void TIM3_GPIO_Config(void)
   
2. {
   
3.   GPIO_InitTypeDef GPIO_InitStructure;
   
4. 
   
5. //        /* éèÖÃTIM3CLK Îa 72MHZ */
   
6. //  RCC_APB1PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
   
7. //        GPIO_PinRemapConfig(GPIO_FullRemap_TIM1, ENABLE);
   
8.   /* GPIOA and GPIOB clock enable */
   
9.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE|RCC_APB2Periph_AFIO|RCC_APB2Periph_TIM1, ENABLE);
   
10. 
    
11. //          GPIO_PinRemapConfig(GPIO_FullRemap_TIM1, ENABLE);
    
12.     GPIO_PinRemapConfig(GPIO_PartialRemap_TIM1, ENABLE);
    
13.        
    
14.   /*GPIOA Configuration: TIM3 channel 1 and 2 as alternate function push-pull */
    
15.   GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_9 | GPIO_Pin_11|GPIO_Pin_13 | GPIO_Pin_14;
    
16.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;                    // ¸′óÃíÆíìêä3ö
    
17.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    
18.   GPIO_Init(GPIOE, &GPIO_InitStructure);
    
19. 
    
20. //  /*GPIOB Configuration: TIM3 channel 3 and 4 as alternate function push-pull */
    
21. //  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_0 | GPIO_Pin_1;
    
22. //  GPIO_Init(GPIOB, &GPIO_InitStructure);
    
23. }
    
24. 
    
25. /**
    
26.   * @brief  ÅäÖÃTIM3êä3öμÄPWMDÅoÅμÄÄ￡ê½￡¬èçÖüÆú¡￠¼«DÔ¡￠Õ¼¿Õ±è
    
27.   * @param  ÎT
    
28.   * @retval ÎT
    
29.   */
    
30. /*
    
31. * TIMxCLK/CK_PSC --> TIMxCNT --> TIMx_ARR --> TIMxCNT ÖØD¼Æêy
    
32. *                    TIMx_CCR(μçƽ·￠éú±ä»ˉ)
    
33. * DÅoÅÖüÆú=(TIMx_ARR +1 ) * ê±ÖóÖüÆú
    
34. * Õ¼¿Õ±è=TIMx_CCR/(TIMx_ARR +1)
    
35. */
    
36. static void TIM3_Mode_Config(void)
    
37. {
    
38.         TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
    
39.         TIM_OCInitTypeDef  TIM_OCInitStructure;
    
40. 
    
41.         /* PWMDÅoÅμçƽìø±äÖμ */
    
42.         u16 CCR1_Val = 500;        
    
43.         u16 CCR2_Val = 375;
    
44.         u16 CCR3_Val = 250;
    
45.         u16 CCR4_Val = 125;
    
46. 
    
47. /* -----------------------------------------------------------------------
    
48.     TIM3 Channel1 duty cycle = (TIM3_CCR1/ TIM3_ARR+1)* 100% = 50%
    
49.     TIM3 Channel2 duty cycle = (TIM3_CCR2/ TIM3_ARR+1)* 100% = 37.5%
    
50.     TIM3 Channel3 duty cycle = (TIM3_CCR3/ TIM3_ARR+1)* 100% = 25%
    
51.     TIM3 Channel4 duty cycle = (TIM3_CCR4/ TIM3_ARR+1)* 100% = 12.5%
    
52.   ----------------------------------------------------------------------- */
    
53. 
    
54.   /* Time base configuration */                 
    
55.   TIM_TimeBaseStructure.TIM_Period = 999;       //챶¨ê±Æ÷′ó0¼Æêyμ½999￡¬¼′Îa1000′Î￡¬Îaò»¸ö¶¨ê±ÖüÆú
    
56.   TIM_TimeBaseStructure.TIM_Prescaler = 0;            //éèÖÃÔ¤·ÖÆμ￡o2»Ô¤·ÖÆμ￡¬¼′Îa72MHz
    
57.   TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1 ;        //éèÖÃê±Öó·ÖÆμÏμêy￡o2»·ÖÆμ(ÕaàïóÃ2»μ½)
    
58.   TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //ÏòéϼÆêyÄ￡ê½
    
59.   TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
    
60. 
    
61.   /* PWM1 Mode configuration: Channel1 */
    
62.   TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;            //ÅäÖÃÎaPWMÄ￡ê½1
    
63.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;       
    
64.   TIM_OCInitStructure.TIM_Pulse = CCR1_Val;           //éèÖÃìø±äÖμ￡¬μ±¼ÆêyÆ÷¼Æêyμ½Õa¸öÖμê±￡¬μçƽ·￠éúìø±ä
    
65.   TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;  //챶¨ê±Æ÷¼ÆêyÖμD¡óúCCR1_Valê±Îa¸ßμçƽ
    
66.   TIM_OC1Init(TIM1, &TIM_OCInitStructure);         //ê1Äüí¨μà1
    
67.   TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
    
68. 
    
69.   /* PWM1 Mode configuration: Channel2 */
    
70.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    
71.   TIM_OCInitStructure.TIM_Pulse = CCR2_Val;          //éèÖÃí¨μà2μÄμçƽìø±äÖμ￡¬êä3öáííaò»¸öÕ¼¿Õ±èμÄPWM
    
72.   TIM_OC2Init(TIM1, &TIM_OCInitStructure);          //ê1Äüí¨μà2
    
73.   TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);
    
74. 
    
75.   /* PWM1 Mode configuration: Channel3 */
    
76.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    
77.   TIM_OCInitStructure.TIM_Pulse = CCR3_Val;        //éèÖÃí¨μà3μÄμçƽìø±äÖμ￡¬êä3öáííaò»¸öÕ¼¿Õ±èμÄPWM
    
78.   TIM_OC3Init(TIM1, &TIM_OCInitStructure);         //ê1Äüí¨μà3
    
79.   TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);
    
80. 
    
81.   /* PWM1 Mode configuration: Channel4 */
    
82.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    
83.   TIM_OCInitStructure.TIM_Pulse = CCR4_Val;        //éèÖÃí¨μà4μÄμçƽìø±äÖμ￡¬êä3öáííaò»¸öÕ¼¿Õ±èμÄPWM
    
84.   TIM_OC4Init(TIM1, &TIM_OCInitStructure);        //ê1Äüí¨μà4
    
85.   TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable);
    
86.   TIM_ARRPreloadConfig(TIM1, ENABLE);                         // ê1ÄüTIM3ÖØÔؼÄ′æÆ÷ARR
    
87. //GPIO_PinConfig(GPIOA, GPIO_PinSource6, GPIO_AF_TIM3);
    
88.   /* TIM3 enable counter */
    
89.   TIM_Cmd(TIM1, ENABLE);                   //ê1Äü¶¨ê±Æ÷3       
    
90. }
    
91. 
    
92. /**
    
93.   * @brief  TIM3 êä3öPWMDÅoÅ3õê¼»ˉ￡¬Ö»òaμ÷óÃÕa¸öoˉêy
    
94.   *         TIM3μÄËĸöí¨μà¾í»áóDPWMDÅoÅêä3ö
    
95.   * @param  ÎT
    
96.   * @retval ÎT
    
97.   */
    
98. void TIM3_PWM_Init(void)
    
99. {
    
100.         TIM3_GPIO_Config();
     
101.         TIM3_Mode_Config();       
     
102. }
     

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李晋南

我查没查到结果。谢谢

李晋南

还是没出结果