tim1中断的问题

mingshen · 发表于 2014-10-25 16:20:43

void BLDC_TIM1Config(void)
{
   TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;      //基本结构体变量定义
   TIM_OCInitTypeDef   TIM_OCInitStructure;               //输出结构体变量定义
   TIM_BDTRInitTypeDef TIM_BDTRInitStructure;      //死区刹车结构体变量定义

TIM_DeInit(TIM1);

   TIM_TimeBaseStructure.TIM_Prescaler = 2;        //TIM基本初始化
   TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_CenterAligned2;//中央对齐计数模式,输出比较标志位只有在比较器向上计算被设置
   TIM_TimeBaseStructure.TIM_Period = 1500 - 1;        //PWM 16K
   TIM_TimeBaseStructure.TIM_ClockDivision = 0;
   TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;

TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure);

   TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;      //TIM输出通道初始化
   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Disable;
   TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
   TIM_OCInitStructure.TIM_Pulse =1200;
   TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
   TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
   TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;//TIM_OCIdleState_Set;
   TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

   TIM_OC1Init(TIM1,&TIM_OCInitStructure);

TIM_OCInitStructure.TIM_Pulse =1200;
TIM_OC2Init(TIM1,&TIM_OCInitStructure);

TIM_OCInitStructure.TIM_Pulse =1200;
TIM_OC3Init(TIM1,&TIM_OCInitStructure);

   TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;      //TIM输出通道4初始化，用来触发AD注入采样
   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Disable;
   TIM_OCInitStructure.TIM_Pulse =1495;
   TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;

   TIM_OC4Init(TIM1,&TIM_OCInitStructure);

   TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable; //死区刹车初始化
   TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
   TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;
   TIM_BDTRInitStructure.TIM_DeadTime = 100;
   TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable; //如打开，开机无输出且状态紊乱？？？？
   TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_Low ;
   TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Disable;

TIM_BDTRConfig(TIM1,&TIM_BDTRInitStructure);

TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable); //使能捕获比较寄存器预装载（通道1）

TIM_OC2PreloadConfig(TIM1,TIM_OCPreload_Enable); //使能捕获比较寄存器预装载（通道2）

   TIM_OC3PreloadConfig(TIM1,TIM_OCPreload_Enable); //使能捕获比较寄存器预装载（通道3）

   TIM_SelectInputTrigger(TIM1, TIM_TS_ITR2);        //输入触发源选择TIM3

   //TIM_SelectSlaveMode(TIM1, TIM_SlaveMode_Trigger);//从模式选择触发

TIM_CtrlPWMOutputs(TIM1,ENABLE);

//   TIM_ClearITPendingBit(TIM1, TIM_IT_Break|TIM_IT_COM);
//   TIM_ITConfig(TIM1, TIM_IT_Break | TIM_IT_COM ,ENABLE);
   TIM_ClearITPendingBit( TIM1, TIM_IT_COM);
   TIM_ITConfig(TIM1, TIM_IT_COM ,ENABLE);

   TIM_Cmd(TIM1,ENABLE);
}

start()
{
TIM1->SMCR|=0x0006;        //开TIM1的输入触发
   TIM1->DIER=0x0040;         //开TIM1的触发中断
}
void TIM1_TRG_COM_IRQHandler(void)
{
TIM1->SR&=0;           //清中断标志

huanxiang();       //调用换向函数
}