请教一下大家和原子哥，我用pwm驱动28bjy-48步进电机，驱动板灯亮。电机只振动，不转，怎么回事？

支持者2400

请教一下大家和原子哥，我用pwm驱动28bjy-48步进电机，驱动板灯亮。电机只振动，不转，怎么回事？
int main(void)
{               
    u8 t;
         delay_init();
         LED_Init();

         KEY_Init();
         Key4x4_GPIO_Config();
         uart_init(115200);
        TIM1_PWM_Init();
        while (1)
        {               
Prun();
        }
}

void Prun()
{

TIM_SetCompare1(TIM1,500); //????
TIM_SetCompare2(TIM1,0);
TIM_SetCompare3(TIM1,0); //????
TIM_SetCompare4(TIM1,0);
delay_ms(10);
       
TIM_SetCompare1(TIM1,0); //????
TIM_SetCompare2(TIM1,500);
TIM_SetCompare3(TIM1,0); //????
TIM_SetCompare4(TIM1,0);
delay_ms(10);

TIM_SetCompare1(TIM1,0); //????
TIM_SetCompare2(TIM1,0);
TIM_SetCompare3(TIM1,500); //????
TIM_SetCompare4(TIM1,0);
delay_ms(10);
       
          TIM_SetCompare1(TIM1,0); //????
TIM_SetCompare2(TIM1,0);
TIM_SetCompare3(TIM1,0); //????
TIM_SetCompare4(TIM1,500);
delay_ms(10);
       

       
}

323232

电压够吗？或者说PWM频率没对上？脉宽太小？

华山剑客

帮楼主顶一下......

支持者2400

1. #include "timer.h"
   
2. #include "led.h"
   
3. #include "delay.h"
   
4. //TIM4 PWM?????
   
5. //PWM?????
   
6. //arr:?????
   
7. //psc:??????
   
8. void TIM4_PWM_Init()
   
9. {  
   
10. GPIO_InitTypeDef GPIO_InitStructure;
    
11. TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
    
12. TIM_OCInitTypeDef  TIM_OCInitStructure;
    
13.   RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); //?????4??
    
14.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO, ENABLE);  //??GPIO???AFIO????????
    
15. GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9; //
    
16. GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //??????
    
17. GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    
18. GPIO_Init(GPIOB, &GPIO_InitStructure);//???GPIO
    
19.    //???TIM4
    
20. TIM_TimeBaseStructure.TIM_Period = 99; //???????????????????????????
    
21. TIM_TimeBaseStructure.TIM_Prescaler =719; //??????TIMx???????????
    
22. TIM_TimeBaseStructure.TIM_ClockDivision = 0; //??????:TDTS = Tck_tim
    
23. TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM??????
    
24. TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); //??TIM_TimeBaseInitStruct?????????TIMx???????
    
25. //???TIM4 Channel/2/3/4 PWM??  
    
26. TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //???????:TIM????????2
    
27.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //??????
    
28. TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //????:TIM???????
    
29. TIM_OC1Init(TIM4, &TIM_OCInitStructure);  //??T??????????TIM4 OC1
    
30. TIM_OC2Init(TIM4, &TIM_OCInitStructure);  //??T??????????TIM4 OC2
    
31. TIM_OC3Init(TIM4, &TIM_OCInitStructure);  //??T??????????TIM4 OC3
    
32. TIM_OC4Init(TIM4, &TIM_OCInitStructure);  //??T??????????TIM4 OC4
    
33.   TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable);  //??TIM4?CCR1????????
    
34. TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable);  //??TIM4?CCR2????????
    
35. TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable);  //??TIM4?CCR3????????
    
36. TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable);  //??TIM4?CCR4????????
    
37. TIM_ARRPreloadConfig(TIM4,ENABLE);
    
38. TIM_Cmd(TIM4, ENABLE);  //??TIM4
    
39. }
    
40. void TIM1_PWM_Init()
    
41. {  
    
42. GPIO_InitTypeDef GPIO_InitStructure;
    
43. TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
    
44. TIM_OCInitTypeDef  TIM_OCInitStructure;
    
45. RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); //?????1??
    
46.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);  //??GPIO??
    
47.    //????????????,??TIM1 PWM????
    
48. GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11; //TIM_CHX
    
49. GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //??????
    
50. GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    
51. GPIO_Init(GPIOA, &GPIO_InitStructure);//???GPIO
    
52.    //???TIM1
    
53. TIM_TimeBaseStructure.TIM_Period = 99; //???????????????????????????
    
54. TIM_TimeBaseStructure.TIM_Prescaler =719; //??????TIMx???????????
    
55. TIM_TimeBaseStructure.TIM_ClockDivision = 0; //??????:TDTS = Tck_tim
    
56. TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM??????
    
57. TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); //??TIM_TimeBaseInitStruct?????????TIMx???????
    
58. //???TIM4 Channel/2/3/4 PWM??  
    
59. TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //???????:TIM????????1
    
60.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //??????
    
61. TIM_OCInitStructure.TIM_OutputNState=TIM_OutputState_Disable;//??????????N???
    
62. TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //????:TIM???????
    
63. TIM_OCInitStructure.TIM_OCNPolarity=TIM_OCPolarity_High;//
    
64. TIM_OCInitStructure.TIM_OCIdleState=TIM_OCIdleState_Reset;//?????????????
    
65. TIM_OCInitStructure.TIM_OCNIdleState=TIM_OCIdleState_Reset;//
    
66. //TIM_OCInitStructure.TIM_Pulse=10;
    
67. TIM_OC1Init(TIM1, &TIM_OCInitStructure);  //??T??????????TIM1 OC1
    
68. TIM_OC2Init(TIM1, &TIM_OCInitStructure);  //??T??????????TIM1 OC2
    
69. TIM_OC3Init(TIM1, &TIM_OCInitStructure);  //??T??????????TIM1 OC3
    
70. TIM_OC4Init(TIM1, &TIM_OCInitStructure);  //??T??????????TIM1 OC4
    
71.   TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);  //??TIM1?CCR1????????
    
72. TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);  //??TIM1?CCR2????????
    
73. TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);  //??TIM1?CCR3????????
    
74. TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable);  //??TIM1?CCR4????????
    
75. TIM_ARRPreloadConfig(TIM1,ENABLE);//????????
    
76. TIM_CtrlPWMOutputs(TIM1,ENABLE);//?????
    
77. TIM_Cmd(TIM1, ENABLE);  //??TIM1
    
78. }
    
79. //TIM1??PA8 A9?????, A10 A11?????; TIM4??PB6 B7?????,B8 B9?????
    
80. void Prun()
    
81. {
    
82. 
    
83. TIM_SetCompare1(TIM1,1000); //????
    
84. TIM_SetCompare2(TIM1,0);
    
85. TIM_SetCompare3(TIM1,0); //????
    
86. TIM_SetCompare4(TIM1,0);
    
87. delay_ms(10);
    
88.        
    
89. TIM_SetCompare1(TIM1,0); //????
    
90. TIM_SetCompare2(TIM1,1000);
    
91. TIM_SetCompare3(TIM1,0); //????
    
92. TIM_SetCompare4(TIM1,0);
    
93. delay_ms(10);
    
94. 
    
95. TIM_SetCompare1(TIM1,0); //????
    
96. TIM_SetCompare2(TIM1,0);
    
97. TIM_SetCompare3(TIM1,1000); //????
    
98. TIM_SetCompare4(TIM1,0);
    
99. delay_ms(10);
    
100.        
     
101.           TIM_SetCompare1(TIM1,0); //????
     
102. TIM_SetCompare2(TIM1,0);
     
103. TIM_SetCompare3(TIM1,0); //????
     
104. TIM_SetCompare4(TIM1,1000);
     
105. delay_ms(10);
     
106.        
     
107. 
     
108.        
     
109. }
     

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三叶草

你确定能驱动的起来，你直接用的IO驱动？