关于TIM1

Sakerjin

TIM的ch1为什么输出不了PWM
代码如下
TIM1_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
        TIM1_OCInitTypeDef  TIM_OCInitStructure;
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);

  TIM_TimeBaseInitStructure.TIM1_ClockDivision = TIM_CKD_DIV1; //??????
  TIM_TimeBaseInitStructure.TIM1_CounterMode = TIM_CounterMode_Up;  //?????
  TIM_TimeBaseInitStructure.TIM1_Prescaler = 0;   //Timer clock = sysclock /(TIM_Prescaler+1) = 168M
  TIM_TimeBaseInitStructure.TIM1_RepetitionCounter = 0;
  TIM_TimeBaseInitStructure.TIM1_Period = 3600 - 1;    //Period = (TIM counter clock / TIM output clock) - 1 = 20K
  TIM1_TimeBaseInit(&TIM_TimeBaseInitStructure);


  TIM_OCInitStructure.TIM1_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM1_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM1_OutputNState = TIM_OutputNState_Enable;
  TIM_OCInitStructure.TIM1_Pulse = 1800;
  TIM_OCInitStructure.TIM1_OCPolarity = TIM_OCPolarity_High;
  TIM_OCInitStructure.TIM1_OCNPolarity = TIM_OCPolarity_High;
  TIM_OCInitStructure.TIM1_OCIdleState = TIM_OCIdleState_Set;
  TIM_OCInitStructure.TIM1_OCNIdleState = TIM_OCNIdleState_Reset;

  TIM1_OC1Init(&TIM_OCInitStructure);

//   TIM_OCInitStructure.TIM1_Pulse = ccr2;
//   TIM_OC2Init(TIM1,&TIM_OCInitStructure);
//   
//   TIM_OCInitStructure.TIM_Pulse = ccr3;
//   TIM_OC3Init(TIM1,&TIM_OCInitStructure);
//   
//   TIM_OCInitStructure.TIM_Pulse = ccr4;
//   TIM_OC4Init(TIM1,&TIM_OCInitStructure);

  TIM1_Cmd(ENABLE);
  TIM1_CtrlPWMOutputs(ENABLE);

FantaSy_

帮顶！！！

Sakerjin

FantaSy_ 发表于 2016-3-8 23:20
帮顶！！！

我已经解决了，代码贴上
GPIO_InitTypeDef GPIO_InitStructure;
        TIM1_TimeBaseInitTypeDef  TIM1_Ins;
        TIM1_OCInitTypeDef       TIM1_OC1;
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
        TIM1_DeInit();
        TIM1_Ins.TIM1_Period=3000-1;
        TIM1_Ins.TIM1_Prescaler=500;
        TIM1_Ins.TIM1_RepetitionCounter=0x00;
        TIM1_Ins.TIM1_CounterMode=TIM1_CounterMode_Up;
        TIM1_Ins.TIM1_ClockDivision=TIM1_CKD_DIV1;
        TIM1_TimeBaseInit(&TIM1_Ins);
       
        GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8;
        GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
        GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
        GPIO_Init(GPIOA,&GPIO_InitStructure);
       
        TIM1_OC1.TIM1_OCIdleState=TIM1_OCIdleState_Set;
        TIM1_OC1.TIM1_OCNIdleState=TIM1_OCNIdleState_Reset;
        TIM1_OC1.TIM1_OCMode=TIM1_OCMode_PWM1;
        TIM1_OC1.TIM1_OCPolarity=TIM1_OCPolarity_High;
        TIM1_OC1.TIM1_OCNPolarity=TIM1_OCNPolarity_Low;
        TIM1_OC1.TIM1_OutputState=TIM1_OutputState_Enable;
        TIM1_OC1.TIM1_OutputNState=TIM1_OutputNState_Disable;
        TIM1_OC1.TIM1_Pulse=150-1;
        TIM1_OC1Init(&TIM1_OC1);
        TIM1_Cmd(ENABLE);
        TIM1_CtrlPWMOutputs(ENABLE);