为什么一直进入刹车中断啊！！！

sunwj0525 · 发表于 2014-9-4 15:03:27

[mw_shl_code=c,true]int main(void) { TIM_TimeBaseInitTypeDef TIM1_TimeBaseStructure; TIM_OCInitTypeDef TIM1_OCInitStructure; TIM_BDTRInitTypeDef TIM1_BDTRInitStructure; NVIC_InitTypeDef NVIC_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; NVIC_Configuration(); RCC_Configuration(); /* ADCCLK = PCLK2/6 */ RCC_ADCCLKConfig(RCC_PCLK2_Div6); /* Enable DMA clock */ RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); /* Enable GPIOA, GPIOB, AFIO clocks */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE); /* Enable ADC1 clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); /* Enable ADC2 clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC2, ENABLE); /* Enable TIM1 clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); /* ADC1, ADC2, PWM pins configurations -------------------------------------*/ GPIO_StructInit(&GPIO_InitStructure); /****** Configure PA.05,06,7(ADC Channels [5..7]) as analog input ****/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_StructInit(&GPIO_InitStructure); /****** Configure PA.03 (ADC Channels [3]) as analog input ******/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; GPIO_Init(GPIOB, &GPIO_InitStructure); /* TIM1 Peripheral Configuration -------------------------------------------*/ /* TIM1 Registers reset */ TIM_DeInit(TIM1); TIM_TimeBaseStructInit(&TIM1_TimeBaseStructure); /* Time Base configuration */ TIM1_TimeBaseStructure.TIM_Prescaler = 0x0; //???????. TIM1_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_CenterAligned1; //???????????. TIM1_TimeBaseStructure.TIM_Period = 5000; //????. TIM1_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV2; //?? 2??.??? // Initial condition is REP=0 to set the UPDATE only on the underflow TIM1_TimeBaseStructure.TIM_RepetitionCounter = 1; //???? TIM_TimeBaseInit(TIM1, &TIM1_TimeBaseStructure); //???TIM1?????? . TIM_OCStructInit(&TIM1_OCInitStructure); /* Channel 1, 2,3 in PWM mode */ TIM1_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //??????PWM1. TIM1_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //??????. TIM1_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable; //????????. TIM1_OCInitStructure.TIM_Pulse = 0x505; //dummy value //??(???). TIM1_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //??????????. TIM1_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High; //???????????. TIM1_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset; //???????. TIM1_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset; //?????????. TIM_OC1Init(TIM1, &TIM1_OCInitStructure); TIM_OC2Init(TIM1, &TIM1_OCInitStructure); TIM_OC3Init(TIM1, &TIM1_OCInitStructure); /*Timer1 alternate function full remapping*/ GPIO_PinRemapConfig(GPIO_FullRemap_TIM1,ENABLE); GPIO_StructInit(&GPIO_InitStructure); /* GPIOE Configuration: Channel 1, 1N, 2, 2N, 3, 3N and 4 Output */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_StructInit(&GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure); GPIO_StructInit(&GPIO_InitStructure); /* 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_OCStructInit(&TIM1_OCInitStructure); /* Channel 4 Configuration in OC */ TIM1_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; TIM1_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM1_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable; TIM1_OCInitStructure.TIM_Pulse = 5000 - 1; TIM1_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM1_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low; TIM1_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset; TIM1_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset; TIM_OC4Init(TIM1, &TIM1_OCInitStructure); /* Enables the TIM1 Preload on CC1 Register */ TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable); /* Enables the TIM1 Preload on CC2 Register */ TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable); /* Enables the TIM1 Preload on CC3 Register */ TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable); /* Enables the TIM1 Preload on CC4 Register */ TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable); /* Automatic Output enable, Break, dead time and lock configuration*/ TIM1_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable; TIM1_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable; TIM1_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1; TIM1_BDTRInitStructure.TIM_DeadTime = 11; TIM1_BDTRInitStructure.TIM_Break = TIM_Break_Enable; TIM1_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_Low; TIM1_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Disable; TIM_BDTRConfig(TIM1, &TIM1_BDTRInitStructure); TIM_SelectOutputTrigger(TIM1, TIM_TRGOSource_Update); TIM_ClearITPendingBit(TIM1, TIM_IT_Break); TIM_ITConfig(TIM1, TIM_IT_Break,ENABLE); /* TIM1 counter enable */ TIM_Cmd(TIM1, ENABLE); // Resynch to have the Update evend during Undeflow TIM_GenerateEvent(TIM1, TIM_EventSource_Update); // Clear Update Flag TIM_ClearFlag(TIM1, TIM_FLAG_Update); TIM_ITConfig(TIM1, TIM_IT_Update, DISABLE); TIM_ITConfig(TIM1, TIM_IT_CC4,DISABLE); /* Configure one bit for preemption priority */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); /* Enable the TIM1 BRK Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = TIM1_BRK_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); while(1) { } }[/mw_shl_code]