定时器配置代码如下：
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable the TIM1 BRK Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM1_UP_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;//TIM1_UP_PRIORITY;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
GPIO_PinRemapConfig(GPIO_FullRemap_TIM1,ENABLE); // TIM1 Full Remap
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 , ENABLE);
// /* GPIOE Configuration: BKIN pin */
// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
// GPIO_Init(GPIOB, &GPIO_InitStructure);
TIM_DeInit(TIM1);
/* Automatic Output enable, Break, dead time and lock configuration*/
TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Disable; //定时器不工作时输出无效电平
TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Disable;
TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_OFF; //死区时间可随时设置
TIM_BDTRInitStructure.TIM_DeadTime = DEADTIME/*100*/;
TIM_BDTRInitStructure.TIM_Break = TIM_Break_Enable;//Enable; //制动使能
TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_Low; //低电平有效
TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Disable; //自动输出不使能
TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);
/* Time Base configuration */
TIM_TimeBaseStructure.TIM_Period = TS/2;
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_CenterAligned1; //TIM中心对齐模式1计数模式
TIM_TimeBaseStructure.TIM_RepetitionCounter = 1;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
/* Channel 1, 2,3 and 4 Configuration in PWM mode */
// TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; // 输出电平
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; // 输出电平
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
// TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
// TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OC2Init(TIM1, &TIM_OCInitStructure);
TIM_OC3Init(TIM1, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable);
TIM_OC2PreloadConfig(TIM1,TIM_OCPreload_Enable);
TIM_OC3PreloadConfig(TIM1,TIM_OCPreload_Enable);
TIM_ITConfig(TIM1, TIM_IT_Break,ENABLE);
TIM_ITConfig(TIM1, TIM_IT_Update,DISABLE);
TIM_Cmd(TIM1, ENABLE);
TIM_CtrlPWMOutputs(TIM1, DISABLE);
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