TIM_TimeBaseStructure.TIM_Prescaler = 0;         //预分频数为0,不分频
 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //计数方式为顺序计数模式，增大型
 //TIM_TimeBaseStructure.TIM_Period = 5625-1;        //设置计数器溢出后的重载初值  
 TIM_TimeBaseStructure.TIM_Period = Period-1;        //设置计数器溢出后的重载初值
 TIM_TimeBaseStructure.TIM_ClockDivision = 0;      //配置时钟分隔值
 TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;     //循环计数次数值
 
 TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);     //用以上参数初始化定时器时间基础模块

 
 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
 TIM_OCInitStructure.TIM_Pulse = Pulse;//127;
 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_OCIdleState_Reset;
 
 TIM_OC1Init(TIM1, &TIM_OCInitStructure);
 
 
 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 = 5;
 TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;
 TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
 TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Disable;
 
 TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);
 
 //清中断
 TIM_ClearFlag(TIM1, TIM_FLAG_Update);
 TIM_ClearFlag(TIM2, TIM_FLAG_Update);
 
 //TIM1中断源设置，开启相应通道的捕捉比较中断 
 
 
 
 TIM_Cmd(TIM1, ENABLE);  //使能定时器1
 
 
 
 TIM_CtrlPWMOutputs(TIM1, ENABLE);//使能定时器1的PWM输出

}

void TIM2_Configuration (uint Period)
{
 TIM_TimeBaseInitTypeDef    TIM_TimeBaseStructure;
 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);    //用以上参数初始化定时器时间基础模块
  
 TIM_DeInit(TIM2);              //复位定时器1所有寄存器
 
 TIM_TimeBaseStructure.TIM_Prescaler = 0;         //预分频数为0,不分频
 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //计数方式为顺序计数模式，增大型
 //TIM_TimeBaseStructure.TIM_Period = 5625-1;        //设置计数器溢出后的重载初值  
 TIM_TimeBaseStructure.TIM_Period = Period-1;        //设置计数器溢出后的重载初值
 TIM_TimeBaseStructure.TIM_ClockDivision = 0;      //配置时钟分隔值
 TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;     //循环计数次数值
 
 TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);  
 //清中断
 TIM_ClearFlag(TIM2, TIM_FLAG_Update);
 
 //TIM1中断源设置，开启相应通道的捕捉比较中断
  TIM_ITConfig(  //使能或者失能指定的TIM中断
  TIM2, //TIM2
  TIM_IT_Update  |  //TIM 中断源
  TIM_IT_Trigger,   //TIM 触发中断源
  ENABLE  //使能
  );

 TIM_Cmd(TIM2, ENABLE);  //使能定时器1

}

void NVIC_Configuration(void)
{   
 NVIC_InitTypeDef NVIC_InitStructure;

 #ifdef  VECT_TAB_RAM             //中断向量表存放位置选择
  
   NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);      //中断向量表存放于RAM中0x00
 #else 
  
   NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);       //中断向量表存放于FLASH中0x00
 #endif

 //中断NVIC设置：允许中断，设置优先级//中断向量设置 
 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);     //设置优先级分组：先占优先级2位,从优先级2位
 NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;     //更新事件
 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  //抢占优先级0
 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;    //响应优先级1
 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;     //允许中断
 NVIC_Init(&NVIC_InitStructure);         //写入设置
  
}