问答

MM32SPIN系统单片机高级定时器输入捕获 没办法进入TIM_CC_IRQH中断void Remote_1(void) { GPIO_InitTypeDef GPIO_InitStructure; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);//使能GPIOB时钟 GPIO_PinAFConfig(GPIOB, GPIO_PinSource4, GPIO_AF_7);//GPIOB4复用为TIM1 //GPIO GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;//下拉输入 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure); } void Remote_Init(uint16_t period, uint8_t prescaler) { TIM_TimeBaseInitTypeDef TIM_StructInit; TIM_ICInitTypeDef TIM_ICInitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); TIM_TimeBaseStructInit(&TIM_StructInit); TIM_StructInit.TIM_Period = period; TIM_StructInit.TIM_Prescaler = prescaler; TIM_StructInit.TIM_ClockDivision = TIM_CKD_DIV1; TIM_StructInit.TIM_CounterMode = TIM_CounterMode_Up; TIM_StructInit.TIM_RepetitionCounter = 0; TIM_TimeBaseInit(TIM1, &TIM_StructInit); //TIM1输入捕获参数设置 TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;//CC2S=01 选择输入端 IC2映射到TI1上 TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;//上升沿捕获 TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;//映射到TI1上 TIM_ICInitStructure.TIM_ICFilter = 0x0; TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;//配置输入分频,不分频 TIM_ICInit(TIM1, &TIM_ICInitStructure); TIM_ARRPreloadConfig(TIM1, ENABLE); TIM_ITConfig(TIM1,TIM_IT_CC2 | TIM_IT_Update, ENABLE); TIM_CtrlPWMOutputs(TIM1, ENABLE); TIM_Cmd(TIM1, ENABLE); } void Remote_2(void) { NVIC_InitTypeDef NVIC_InitStructure; NVIC_InitStructure.NVIC_IRQChannel = TIM1_BRK_UP_TRG_COM_IRQn;//定时中断3 NVIC_InitStructure.NVIC_IRQChannelPriority = 1;//中断优先级 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能中断 NVIC_Init(&NVIC_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = TIM1_CC_IRQn;//定时中断3 NVIC_InitStructure.NVIC_IRQChannelPriority = 0;//中断优先级 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能中断 NVIC_Init(&NVIC_InitStructure); } void TIM1_BRK_UP_TRG_COM_IRQHandler(void) { if(TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET)//溢出中断 { LED3_TOGGLE(); TIM_ClearITPendingBit(TIM1, TIM_IT_Update); //清除TIMx更新中断标志 } } void TIM1_CC_IRQHandler(void) { if(TIM_GetITStatus(TIM1, TIM_IT_CC2) != RESET)//捕获中断 { LED2_TOGGLE(); TIM_ClearITPendingBit(TIM1, TIM_IT_CC2); //清除TIMx更新中断标志 } }

原本想用高级定时器的中央对齐计数模式来输出SPWM波，但是TIMER0的CH0，CH1等口，都无法正常输出PWM波形，换成普通定时器就可以了，STM32里对于高级定时器输出PWM波形，需要多加一个[color=#333333][backcolor=rgb(255, 255, 255)][font=-apple-system, "][size=16px]TIM_CtrlPWMOutputs函数，但是我看了GD32固件库函数，没有类似的，我怀疑是这个问题，有无大佬解答一下啊[/size][/font][/backcolor][/color]

各位大佬好！ 我按照GD32F30x的标准库配置了GD32F305VG 的timer0定时器并开启了输入捕获功能，配置代码如下： void timer_config(void) { /* ----------------------------------------------------------------------- timer_parameter_struct timer_initpara; timer_ic_parameter_struct timer_icinitpara; rcu_periph_clock_enable(RCU_TIMER0); timer_deinit(TIMER0); /*NVIC config*/ nvic_irq_enable(TIMER0_UP_TIMER9_IRQn, 1, 1); nvic_irq_enable(TIMER0_Channel_IRQn, 1, 0); /* TIMER0 configuration */ timer_initpara.prescaler = 119; timer_initpara.alignedmode = TIMER_COUNTER_EDGE; timer_initpara.counterdirection = TIMER_COUNTER_UP; timer_initpara.period = 999; timer_initpara.clockdivision = TIMER_CKDIV_DIV1; timer_initpara.repetitioncounter = 0; timer_init(TIMER0, &timer_initpara); timer_icinitpara.icpolarity = TIMER_IC_POLARITY_RISING; timer_icinitpara.icselection = TIMER_IC_SELECTION_DIRECTTI; timer_icinitpara.icprescaler = TIMER_IC_PSC_DIV1; timer_icinitpara.icfilter = 0x0; timer_input_capture_config(TIMER0, TIMER_CH_0, &timer_icinitpara); timer_input_capture_config(TIMER0, TIMER_CH_3, &timer_icinitpara); /* auto-reload preload enable */ timer_auto_reload_shadow_enable(TIMER0); timer_interrupt_flag_clear(TIMER0,TIMER_INT_FLAG_CH0); timer_interrupt_flag_clear(TIMER0,TIMER_INT_FLAG_CH3); timer_interrupt_enable(TIMER0,TIMER_INT_CH0); timer_interrupt_enable(TIMER0,TIMER_INT_CH3); timer_interrupt_enable(TIMER0,TIMER_INT_UP); timer_enable(TIMER0); } /*中断服务程序*/ void TIMER0_UP_TIMER9_IRQHandler(void) { if ( timer_interrupt_flag_get(TIMER0, TIMER_INT_FLAG_UP) != RESET ) { timer_interrupt_flag_clear(TIMER0, TIMER_INT_FLAG_UP); timer0tick++; } } void TIMER0_Channel_IRQHandler() { if ( timer_interrupt_flag_get(TIMER0, TIMER_INT_FLAG_CH0) != RESET) { timer_interrupt_flag_clear(TIMER0, TIMER_INT_FLAG_CH0); } else if (timer_interrupt_flag_get(TIMER0, TIMER_INT_FLAG_CH3) != RESET){ timer_interrupt_flag_clear(TIMER0, TIMER_INT_FLAG_CH3); rcvcnt++; } } TIMER0 CH0和CH3的GPIO口确定可以正常检测到高低电平，然而软件在运行中，只有更新中断是正常的，输入捕获中断一直触发不了，不知道各位大佬们是否有遇到过此类问题，恳请指点一二，感谢！