TIM1PWM输出关不掉。。。

亲亻尔嘴

[mw_shl_code=c,true]void TIM1_init(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct; TIM_OCInitTypeDef TIM_OCInitStruct; GPIO_InitTypeDef GPIO_InitStruct; TIM_BDTRInitTypeDef TIM_BDTRInitStruct; NVIC_InitTypeDef NVIC_InitStruct; RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_TIM1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB,ENABLE);//????TIM1?±?? //PB13--PB15???????ì???? GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStruct.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15; GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB,&GPIO_InitStruct); //PA8--PA10???????ì???? GPIO_InitStruct.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10; GPIO_Init(GPIOA,&GPIO_InitStruct); //?è??PWM??????10K TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInitStruct.TIM_Period = 99;//?¤×°??????99 TIM_TimeBaseInitStruct.TIM_Prescaler = 71;//72·??? TIM_TimeBaseInit(TIM1,&TIM_TimeBaseInitStruct); //PWM?????è?? TIM_OCInitStruct.TIM_OCIdleState = TIM_OCIdleState_Set; TIM_OCInitStruct.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStruct.TIM_OCNIdleState = TIM_OCIdleState_Set; TIM_OCInitStruct.TIM_OCNPolarity = TIM_OCNPolarity_High; //OCN1?????§???????? TIM_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_High;//OC1???§???????? TIM_OCInitStruct.TIM_OutputNState = TIM_OutputState_Enable; TIM_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStruct.TIM_Pulse = 0;//????????PWM TIM_OC1Init(TIM1,&TIM_OCInitStruct); TIM_OC2Init(TIM1,&TIM_OCInitStruct); TIM_OC3Init(TIM1,&TIM_OCInitStruct); TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable); TIM_OC2PreloadConfig(TIM1,TIM_OCPreload_Enable); TIM_OC3PreloadConfig(TIM1,TIM_OCPreload_Enable); TIM_BDTRInitStruct.TIM_AutomaticOutput = TIM_AutomaticOutput_Disable; TIM_BDTRInitStruct.TIM_Break = TIM_Break_Enable; TIM_BDTRInitStruct.TIM_BreakPolarity = TIM_BreakPolarity_Low; TIM_BDTRInitStruct.TIM_DeadTime = 110; TIM_BDTRInitStruct.TIM_LOCKLevel = TIM_LOCKLevel_OFF; TIM_BDTRInitStruct.TIM_OSSIState = TIM_OSSIState_Enable; TIM_BDTRInitStruct.TIM_OSSRState = TIM_OSSRState_Enable; TIM_BDTRConfig(TIM1,&TIM_BDTRInitStruct); TIM_SelectCOM(TIM1,ENABLE); TIM_SelectInputTrigger(TIM1,TIM_TS_ITR2);//??TIM3??·? TIM_CCPreloadControl(TIM1, ENABLE); NVIC_InitStruct.NVIC_IRQChannel = TIM1_TRG_COM_IRQn; NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE; NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 2;//??????????2 NVIC_InitStruct.NVIC_IRQChannelSubPriority = 2;//????????2 NVIC_Init(&NVIC_InitStruct); TIM_ITConfig(TIM1,TIM_IT_COM,ENABLE);//???íCOM???? TIM_Cmd(TIM1,ENABLE);//????TIM1 }[/mw_shl_code]

在使用TIM1的时候 在COM中断中配置了CCER寄存器为0X0041，在JTAG仿真中看到的CCER的值也是0X0041，为什么OC1N还是有PWM输出啊

亲亻尔嘴

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