staticvoidNVIC_Configuration(void){NVIC_InitTypeDefNVIC_InitStructure;/* 配置NVIC为优先级组1 */NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);/* 配置中断源:按键1 *//* #define KEY1_INT_EXTI_IRQ EXTI0_IRQn *//* EXTI0_IRQn = 6, EXTI Line0 Interrupt */NVIC_InitStructure.NVIC_IRQChannel=KEY1_...
< External interrupt line 23 Connected to the LPTIM Wakeup event */ 在stm32f4xx.h中, 有这些中断的常量, 注意: Line虽然是各自独立的, 但是IRQn不是, Handler也不是 EXTI0_IRQn=6, /*!< EXTI Line0 Interrupt */ EXTI1_IRQn=7, /*!< EXTI Line1 Interrupt */ EXTI2_IRQn=8, /*!< EXTI L...
< FLASH global Interrupt */RCC_IRQn =5,/*!< RCC global Interrupt */EXTI0_IRQn =6,/*!< EXTI Line0 Interrupt */EXTI1_IRQn =7,/*!< EXTI Line1 Interrupt */EXTI2_IRQn =8,/*!< EXTI Line2 Interrupt */EXTI3_IRQn =9,/*!< EXTI Line3 Interrupt */EXTI4_IRQn =10,/*!< EXTI Li...
0x08000) /*!< External interrupt line 15 */ #define EXTI_Line16 ((uint32_t)0x10000) /*!< External interrupt line 16 Connected to the PVD Output */ #define EXTI_Line17 ((uint32_t)0x20000) /*!< External interrupt line 17 Connected to the RTC Alarm event */ #define EXTI_Line18...
* @brief This function handles EXTI line0 interrupt. */voidEXTI0_IRQHandler(void){/* USER CODE BEGIN EXTI0_IRQn 0 *//* USER CODE END EXTI0_IRQn 0 */HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0);/* USER CODE BEGIN EXTI0_IRQn 1 *//* USER CODE END EXTI0_IRQn 1 */}/** ...
在stm32f4xx.h中, 有这些中断的常量, 注意: Line虽然是各自独立的, 但是IRQn不是, Handler也不是 EXTI0_IRQn = 6, /*!< EXTI Line0 Interrupt */ EXTI1_IRQn = 7, /*!< EXTI Line1 Interrupt */ EXTI2_IRQn = 8, /*!< EXTI Line2 Interrupt */ ...
例如，EXTI_InitTypeDef结构允许你细致地配置每一条线路，包括选择线（EXTI_Line0或EXTI_Line2）、中断模式（EXTI_Mode_Interrupt或EXTI_Mode_Event）以及触发方式（EXTI_Trigger_Rising）。一个实用的示例是将PA0配置为外部中断输入，上升沿触发。首先，你需要配置GPIOA和SYSCFG的时钟，然后调用SYSCFG_...
EXTI_Line = EXTI_Line0; /* 中断模式 */ EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; /* 上升沿触发 */ EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; /* 使能中断/事件线 */ EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); //---第五步--- /*配...
* @brief This function handles External lines 0 interrupt request. */ void EXTI0_IRQHandler(void) { if (EXTI_GetIntStatus(EXTI_Line0) != RESET) { /* Write the descriptor through the endpoint */ /* Clear the EXTI line 0 pending bit */ ...
由上图可以发现,按键所在的PA0引脚处于EXTI_Line0中断线上,中断向量为EXTI0. NVIC设置 说到中断,就不得不说到NVIC(Nested Vectored Interrupt Controller)嵌套向量中断控制器。因为STM32的中断十分丰富,所以NVIC的出现几乎是必然的。那么谈到NVIC,利用库函数开发的思想,就不难想到结构体的应用。NVIC的结构体定义如下...