使用TIM1定时器通道1互补输出

eric1993

程序下载到开发板后PA8会有个高电平输出，而PB13为低电平，希望都为低电平（或高电平），是F407的板子

void MotorDriver_Init(u32 arr,u32 psc)
{
        GPIO_InitTypeDef                GPIO_InitStructure;
        TIM_TimeBaseInitTypeDef   TIM_TimeBaseInitStructure;
        TIM_OCInitTypeDef         TIM_OCInitStructure;
        TIM_BDTRInitTypeDef       TIM_BDTRInitStructure;
       
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); //ê1ÄüTIM1ê±Öó
        RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA|RCC_AHB1Periph_GPIOB,ENABLE); //ê1ÄüGPIOA,Bê±Öó       
       
        GPIO_PinAFConfig(GPIOA,GPIO_PinSource8,GPIO_AF_TIM1); //GPIOA8¸′óÃÎa¶¨ê±Æ÷1
        GPIO_PinAFConfig(GPIOB,GPIO_PinSource13,GPIO_AF_TIM1);//GPIOB13¸′óÃÎa¶¨ê±Æ÷1
       
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//¸′óÃ1|Äü
        GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//íÆíìêä3ö
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100M
        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//éÏà-
        GPIO_Init(GPIOA, &GPIO_InitStructure);//3õê¼»ˉGPIOA8
       
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//¸′óÃ1|Äü
        GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//íÆíìêä3ö
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100M
        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//éÏà-
        GPIO_Init(GPIOB, &GPIO_InitStructure);//3õê¼»ˉGPIOB13
       
        GPIO_SetBits(GPIOA, GPIO_Pin_8);
        GPIO_SetBits(GPIOB, GPIO_Pin_13);
       
        TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
        TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
        TIM_TimeBaseInitStructure.TIM_Period = arr;
        TIM_TimeBaseInitStructure.TIM_Prescaler = psc;
        TIM_TimeBaseInit(TIM1,&TIM_TimeBaseInitStructure);
        TIM_TimeBaseStructInit(&TIM_TimeBaseInitStructure);
               
        TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
        TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
        TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
        TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
        TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
        TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
        TIM_OCInitStructure.TIM_OCNIdleState =TIM_OCNIdleState_Reset;       
        TIM_OC1Init(TIM1,&TIM_OCInitStructure);       
        TIM_OC2Init(TIM1,&TIM_OCInitStructure);
       
        TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);  //CH1ԤװÔØê1Äü         
        TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);  //CH1NԤװÔØê1Äü         
       
        TIM_ARRPreloadConfig(TIM1, ENABLE); //ê1ÄüTIM1ÔúARRéÏμÄԤװÔؼÄ′æÆ÷

        TIM_Cmd(TIM1, ENABLE);  //ê1ÄüTIM1       
       
        TIM_CtrlPWMOutputs(TIM1,ENABLE);
       
//ËàÇøê±¼äéèÖÃ
//DT=(64+DTG)*Tdtg,Tdtg=2*TDTS
//DTËàÇøê±¼ä,TDTSÏμí3ê±ÖóÖüÆúê±3¤,TdtgÏμí3ê±ÖóÖüÆúê±3¤3ËòÔ±¶êyoóμÄËàÇøéèÖÃê±¼ä2½½øÖμ
        TIM_BDTRStructInit(&TIM_BDTRInitStructure);
       
        TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
        TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;
        TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
        TIM_BDTRInitStructure.TIM_DeadTime = 0xE0;    //3usêÇ0xE0,1usêÇ0x94
        TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
        TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;       
        TIM_BDTRConfig(TIM1,&TIM_BDTRInitStructure);       
       
}

正点原子

eric1993 发表于 2017-9-19 22:39
我的意思是在初始化后两个引脚输出一样的电平，我用TIM8的通道1互补输出都可以，是不是和开发板的引脚定 ...

IO看数据手册，不同定时器，不同通道，分配的IO在数据手册里面都有

eric1993

求大神指教入和输出相同电平

正点原子

直接一个IO接2根线出来就得了

eric1993

正点原子 发表于 2017-9-19 00:02
直接一个IO接2根线出来就得了

我的意思是在初始化后两个引脚输出一样的电平，我用TIM8的通道1互补输出都可以，是不是和开发板的引脚定义有关，如果是的话，该如何操作