高级定时器TIM1的三个通道延时输出问题

只看该作者 · 2020-4-25 18:32

static void ADVANCE_TIM_GPIO_Config(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

      RCC_APB2PeriphClockCmd(ADVANCE_TIM_CH1_GPIO_CLK|ADVANCE_TIM_CH2_GPIO_CLK|ADVANCE_TIM_CH3_GPIO_CLK, ENABLE);
  GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_CH1_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(ADVANCE_TIM_CH1_PORT, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_CH2_PIN;
      GPIO_Init(ADVANCE_TIM_CH2_PORT, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_CH3_PIN;
      GPIO_Init(ADVANCE_TIM_CH3_PORT, &GPIO_InitStructure);

      RCC_APB2PeriphClockCmd(ADVANCE_TIM_CH1N_GPIO_CLK|ADVANCE_TIM_CH2N_GPIO_CLK|ADVANCE_TIM_CH3N_GPIO_CLK, ENABLE);
  GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_CH1N_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(ADVANCE_TIM_CH1N_PORT, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_CH2N_PIN;
      GPIO_Init(ADVANCE_TIM_CH2N_PORT, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_CH3N_PIN;
      GPIO_Init(ADVANCE_TIM_CH3N_PORT, &GPIO_InitStructure);

      RCC_APB2PeriphClockCmd(ADVANCE_TIM_BKIN_GPIO_CLK, ENABLE);
  GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_BKIN_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(ADVANCE_TIM_BKIN_PORT, &GPIO_InitStructure);
      GPIO_ResetBits(ADVANCE_TIM_BKIN_PORT,ADVANCE_TIM_BKIN_PIN);
}
static void ADVANCE_TIM_Mode_Config(void)
{
      ADVANCE_TIM_APBxClock_FUN(ADVANCE_TIM_CLK,ENABLE);

      TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
      TIM_TimeBaseStructure.TIM_Period=ADVANCE_TIM_PERIOD;
      TIM_TimeBaseStructure.TIM_Prescaler= ADVANCE_TIM_PSC;
      TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;
      TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;
      TIM_TimeBaseStructure.TIM_RepetitionCounter=0;
      TIM_TimeBaseInit(ADVANCE_TIM, &TIM_TimeBaseStructure);

      TIM_OCInitTypeDef  TIM_OCInitStructure;
      TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
      TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
      TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
      TIM_OCInitStructure.TIM_Pulse = ADVANCE_TIM_PULSE;
      TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
      TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
      TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
      TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set;
      TIM_OC1Init(ADVANCE_TIM, &TIM_OCInitStructure);
      TIM_OC1PreloadConfig(ADVANCE_TIM, TIM_OCPreload_Enable);

   TIM_OC2Init(ADVANCE_TIM, &TIM_OCInitStructure);

      TIM_OC3Init(ADVANCE_TIM, &TIM_OCInitStructure);

      TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
  TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
  TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
  TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;
  TIM_BDTRInitStructure.TIM_DeadTime = 22;                         //305ns
  TIM_BDTRInitStructure.TIM_Break = TIM_Break_Enable;
  TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
  TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
  TIM_BDTRConfig(ADVANCE_TIM, &TIM_BDTRInitStructure);

      TIM_Cmd(ADVANCE_TIM, ENABLE);
      TIM_CtrlPWMOutputs(ADVANCE_TIM, ENABLE);
}
void ADVANCE_TIM_Config(void)
{
      ADVANCE_TIM_GPIO_Config();
      ADVANCE_TIM_Mode_Config();
   SysTick_Delay_Us( (ADVANCE_TIM_PERIOD+1)/3);
      TIM_OC2PreloadConfig(ADVANCE_TIM, TIM_OCPreload_Enable);
      SysTick_Delay_Us( (ADVANCE_TIM_PERIOD+1)/3);
      TIM_OC3PreloadConfig(ADVANCE_TIM, TIM_OCPreload_Enable);
}
以上代码是通过例程修改而来，现在想把三个通道分别延时三分之一同期再输出，通过延时三分之一周期再使能通道2，再延时三分之一周期使能通道3，不知道这方法行不行。我没示波器也不知道有没有延时输出。

高级定时器TIM1的三个通道延时输出问题

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