四个通用定时器（TIM2 TIM3 TIM4 TIM5）的四通道输出

TIM2的四通道依次为：PA0  PA1  PA2  PA3

void TIM2_PWM_Init(u16 arr,u16 psc)
{
  GPIO_InitTypeDef        GPIO_InitStructure;
  TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
  TIM_OCInitTypeDef       TIM_OCInitStructure;    

  //----------GPIO Init----------
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

  GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    
  GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  //----------TIM Base Init----------
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

  TIM_TimeBaseStructure.TIM_Period        = arr;
  TIM_TimeBaseStructure.TIM_Prescaler     = psc;
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseStructure.TIM_CounterMode   = TIM_CounterMode_Up;

  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

  //----------TIM OC Init----------
  TIM_OCInitStructure.TIM_OCMode      = TIM_OCMode_PWM2;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_OCPolarity  = TIM_OCPolarity_Low;
  TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
  TIM_OCInitStructure.TIM_Pulse       = 0;

  TIM_OC1Init(TIM2, &TIM_OCInitStructure);
  TIM_OC2Init(TIM2, &TIM_OCInitStructure);
  TIM_OC3Init(TIM2, &TIM_OCInitStructure);
  TIM_OC4Init(TIM2, &TIM_OCInitStructure);

  //----------ENABLE----------
  TIM_Cmd(TIM2, ENABLE);
}

 

TIM3的四通道依次为：PA6  PA7  PB0  PB1

void TIM3_PWM_Init(u16 arr,u16 psc)
{
  GPIO_InitTypeDef        GPIO_InitStructure;
  TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
  TIM_OCInitTypeDef       TIM_OCInitStructure;    

  //----------GPIO Init----------
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE);

  GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_InitStructure.GPIO_Pin      = GPIO_Pin_6 | GPIO_Pin_7;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin      = GPIO_Pin_0 | GPIO_Pin_1;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  //----------TIM Base Init----------
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

  TIM_TimeBaseStructure.TIM_Period        = arr;
  TIM_TimeBaseStructure.TIM_Prescaler     = psc;
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseStructure.TIM_CounterMode   = TIM_CounterMode_Up;

  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

  //----------TIM OC Init----------
  TIM_OCInitStructure.TIM_OCMode      = TIM_OCMode_PWM2;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_OCPolarity  = TIM_OCPolarity_Low;
  TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
  TIM_OCInitStructure.TIM_Pulse       = 0;

  TIM_OC1Init(TIM3, &TIM_OCInitStructure);
  TIM_OC2Init(TIM3, &TIM_OCInitStructure);
  TIM_OC3Init(TIM3, &TIM_OCInitStructure);
  TIM_OC4Init(TIM3, &TIM_OCInitStructure);

  //----------ENABLE----------
  TIM_Cmd(TIM3, ENABLE);
}

 

TIM4的四通道依次为：PB6 PB7 PB8 PB9

void TIM4_PWM_Init(u16 arr,u16 psc)
{
  GPIO_InitTypeDef        GPIO_InitStructure;
  TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
  TIM_OCInitTypeDef       TIM_OCInitStructure;
    
  //----------GPIO Init----------
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
    
  GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    
  GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  //----------TIM Base Init----------
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);

  TIM_TimeBaseStructure.TIM_Period        = arr;
  TIM_TimeBaseStructure.TIM_Prescaler     = psc;
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseStructure.TIM_CounterMode   = TIM_CounterMode_Up;

  TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);

  //----------TIM OC Init----------
  TIM_OCInitStructure.TIM_OCMode      = TIM_OCMode_PWM2;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_OCPolarity  = TIM_OCPolarity_Low;
  TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
  TIM_OCInitStructure.TIM_Pulse       = 0;

  TIM_OC1Init(TIM4, &TIM_OCInitStructure);
  TIM_OC2Init(TIM4, &TIM_OCInitStructure);
  TIM_OC3Init(TIM4, &TIM_OCInitStructure);
  TIM_OC4Init(TIM4, &TIM_OCInitStructure);

  //----------ENABLE----------
  TIM_Cmd(TIM4, ENABLE);
}

 

TIM5的四通道依次为：PA0 PA1 PA2 PA3

void TIM5_PWM_Init(u16 arr,u16 psc)
{
  GPIO_InitTypeDef        GPIO_InitStructure;
  TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
  TIM_OCInitTypeDef       TIM_OCInitStructure;    

  //----------GPIO Init----------
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

  GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    
  GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  //----------TIM Base Init----------
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);

  TIM_TimeBaseStructure.TIM_Period        = arr;
  TIM_TimeBaseStructure.TIM_Prescaler     = psc;
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseStructure.TIM_CounterMode   = TIM_CounterMode_Up;

  TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure);

  //----------TIM OC Init----------
  TIM_OCInitStructure.TIM_OCMode      = TIM_OCMode_PWM2;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_OCPolarity  = TIM_OCPolarity_Low;
  TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
  TIM_OCInitStructure.TIM_Pulse       = 0;

  TIM_OC1Init(TIM5, &TIM_OCInitStructure);
  TIM_OC2Init(TIM5, &TIM_OCInitStructure);
  TIM_OC3Init(TIM5, &TIM_OCInitStructure);
  TIM_OC4Init(TIM5, &TIM_OCInitStructure);

  //----------ENABLE----------
  TIM_Cmd(TIM5, ENABLE);
}