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標題: 自己瞎玩了個stm32出PWM脈波的程序，用按鍵控制改變PWM波 [打印本頁]

作者: xiaolangwj 時間: 2017-6-27 10:05
標題: 自己瞎玩了個stm32出PWM脈波的程序，用按鍵控制改變PWM波
直流電機可能需要控制速度，自己做了個小車，通過按鍵來控制直流電機的轉速。
我用的事stm32f103的型號。
附上一段主要的程序。
static void TIM3_Mode_Config(void)
{
      TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
      TIM_OCInitTypeDef  TIM_OCInitStructure;

  /* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period = 999;
  TIM_TimeBaseStructure.TIM_Prescaler = 0;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

  /* PWM1 Mode configuration: Channel1 */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 375;
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OC1Init(TIM3, &TIM_OCInitStructure);
  TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);

  /* PWM1 Mode configuration: Channel2 */
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 375;
  TIM_OC2Init(TIM3, &TIM_OCInitStructure);
  TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);

  TIM_ARRPreloadConfig(TIM3, ENABLE);
  /* TIM3 enable counter */
  TIM_Cmd(TIM3, ENABLE);
}

void TIM3_Mode_REConfig(void)
{
      //TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
      TIM_OCInitTypeDef  TIM_OCInitStructure;
      int CCR1_Val[] = {0,100,200,300,400,500,600,700,800,900};
  int CCR2_Val[] = {0,100,200,300,400,500,600,700,800,900};

      printf("111=%u\n",CCR1_Val[shift1]);
      TIM_Cmd(TIM3, DISABLE);
  /* PWM1 Mode configuration: Channel1 */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = CCR1_Val[shift1];
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High；

  TIM_OC1Init(TIM3, &TIM_OCInitStructure);
  TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);

  /* PWM1 Mode configuration: Channel2 */
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = CCR2_Val[shift2];
  TIM_OC2Init(TIM3, &TIM_OCInitStructure);
  TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);
  TIM_ARRPreloadConfig(TIM3, ENABLE);
  /* TIM3 enable counter */
  TIM_Cmd(TIM3, ENABLE);
      printf("222\n");
}

發的比較著急，大家有問題留言。

1鍵值改變PWM脈寬.7z

181.35 KB, 下載次數: 36, 下載積分: 黑幣 -5

作者: xiaolangwj 時間: 2017-6-27 10:05
建議下載附件調試。

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