STM32

多个中断在一起怎么配置啊！

2019-07-21 01:12发布

站内问答 / STM32/STM8
9278 15 1128
串口中断、外部中断1.外部中断2.还有定时器中断，一个有四个中断，我不知道是不是后面的配置把前面的配置给覆盖了，就是没有外部中断，但是我如拿出单个实现，外部中断又可行。 [mw_shl_code=c,true]void NVIC_Configuration(void) { NVIC_InitTypeDef NVIC_InitStructure; /* 配置中断使用组合1*/ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); /* USART*/ NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =3; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /*TIM2*/ NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn; //选择中断通道2 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; //抢占式中断优先级设置为0 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; //响应式中断优先级设置为0 NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE; //使能中断 NVIC_Init(&NVIC_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQn; //选择中断通道3 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; //抢占式中断优先级设置为1 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; //响应式中断优先级设置为1 NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE; //使能中断 NVIC_Init(&NVIC_InitStructure);[/mw_shl_code] 这是中断向量配置
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翱翔云端的鸟
2019-07-21 01:13
把我的多个中断NVIC配置代码贴上来，绝对原创，自我感觉好不错，使用条件编译，且分到同一组中，简直NICE！ [mw_shl_code=c,true]void PA_NVIC_Configuration(NVIC_InitTypeDef NVIC_InitStructure1) { NVIC_InitStructure1.NVIC_IRQChannel = EXTI1_IRQn; NVIC_InitStructure1.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure1.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure1.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure1); } void TIM3_NVIC_Config(NVIC_InitTypeDef NVIC_InitStructure2) { NVIC_InitStructure2.NVIC_IRQChannel = TIM3_IRQn; NVIC_InitStructure2.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure2.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure2.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure2); } void TIM2_NVIC_Config(NVIC_InitTypeDef NVIC_InitStructure3) { NVIC_InitStructure3.NVIC_IRQChannel = TIM2_IRQn; NVIC_InitStructure3.NVIC_IRQChannelPreemptionPriority = 2; NVIC_InitStructure3.NVIC_IRQChannelSubPriority = 2; NVIC_InitStructure3.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure3); } void USART1_NVIC_Config(NVIC_InitTypeDef NVIC_InitStructure4) { NVIC_InitStructure4.NVIC_IRQChannel = USART1_IRQn; NVIC_InitStructure4.NVIC_IRQChannelPreemptionPriority = 3; NVIC_InitStructure4.NVIC_IRQChannelSubPriority = 3; NVIC_InitStructure4.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure4); } void NVIC_Configuration(int Interrupt_flag) { NVIC_InitTypeDef NVIC_InitStructure; /* 配置中断使用组合2 抢占式2位，响应式2位*/ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); if(Interrupt_flag == 1) { /*外部中断1，Z相归零----优先级最高 0 0*/ PA_NVIC_Configuration(NVIC_InitStructure); } if(Interrupt_flag == 2) { /*TIM3中断，编码器解码----优先级 1 1*/ TIM3_NVIC_Config(NVIC_InitStructure); } if(Interrupt_flag == 3) { /*TIM2中断，数据帧接收完毕判断----优先级 2 2*/ TIM2_NVIC_Config(NVIC_InitStructure); } if(Interrupt_flag == 4) { /* USART1中断，数据接收----优先级 3 3*/ USART1_NVIC_Config(NVIC_InitStructure); } }[/mw_shl_code] 这里一共用到了四个中断，外部中断1，TIM3,TIM2,以及串口中断，这是NVIC配置

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