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TimerSetup.c

TimerSetup.c 2.3 KB
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  1. /*--------------------------------------------------------------------------------------
    2. 

  2. *  @file     TimerSetup.c
    3. 

  3. *  @author   ZhangJing
    4. 

  4. *  @version  base on stm32f0x   
    5. 

  5. *  @date     2015.09.11
    6. 

  6. *  @brief    定时器驱动
    7. 

  7. ---------------------------------------------------------------------------------------*/
    8. 

  8. #include "stm32f10x_rcc.h"
    9. 

  9. #include "stm32f10x_gpio.h"
    10. 

  10. #include "stm32f10x_tim.h"
    11. 

  11. #include "TypeDefine.h"
    12. 

  12. #include "TimerSetup.h"
    13. 

  13. 

  14. /*********************************************************************************
    15. 

  15. *  Function:	MotorPWMInit			                                                           
    16. 

  16. *  Object:		电机PWM初始化
    17. 

  17. *  输入:			无
    18. 

  18. *  输出:			无	                                     
    19. 

  19. *  备注:			用TIM1做PWM，控制电机转速              
    20. 

  20. **********************************************************************************/
    21. 

  21. void MotorPWMInit( void )
    22. 

  22. {
    23. 

  23. 	TIM_OCInitTypeDef TIM_OCInitStructure;
    24. 

  24. 	TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    25. 

  25. 

  26. 	TIM_DeInit(TIM1);
    27. 

  27. 

  28. 	/* TIM1模块初始化 */
    29. 

  29. 	/* TIM1基本计数器设置（设置PWM频率） */
    30. 

  30. 	/* 频率 = TIM1_CLK/(ARR+1) */
    31. 

  31. 	TIM_TimeBaseStructure.TIM_Period = 1000 - 1; 					   
    32. 

  32. 	TIM_TimeBaseStructure.TIM_Prescaler = 72 - 1;                       
    33. 

  33. 	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;    
    34. 

  34. 	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; 
    35. 

  35. 	TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
    36. 

  36. 	TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);	
    37. 

  37. 

  38. 	/* 启动ARR的影子寄存器（直到产生更新事件才更改设置） */
    39. 

  39. 	TIM_ARRPreloadConfig(TIM1, ENABLE);
    40. 

  40. 

  41. 	//PWM模式设置 与通道设置TIM1_CH1（设置1通道占空比）
    42. 

  42. 	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;	             
    43. 

  43. 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    44. 

  44. 	TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
    45. 

  45. 	TIM_OCInitStructure.TIM_Pulse = 0;					      				 //当计数器到达127时,电平发送跳变
    46. 

  46. 	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;	   //当计数器<127时,PWM为高电平
    47. 

  47. 	TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;  //当计数器<127时,PWM为高电平
    48. 

  48. 	TIM_OCInitStructure.TIM_OCIdleState  = TIM_OCIdleState_Reset;         //???????1
    49. 

  49. 	TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;   //?????????0       
    50. 

  50. 	TIM_OC1Init(TIM1, &TIM_OCInitStructure);
    51. 

  51. 

  52. 	//开启TIM1				 
    53. 

  53. 	TIM_Cmd(TIM1, ENABLE);
    54. 

  54. 	TIM_CtrlPWMOutputs(TIM1, ENABLE);  
    55. 

  55. 	TIM_CCxNCmd(TIM1, TIM_Channel_1, TIM_CCxN_Enable);//Disable
    56. 

  56. }
    57.