在IAR编译器上的STM32L151xx上工作。
我正在尝试获得 EXTI 中断但一无所获,这是我的代码,它基本上直接来自示例代码但不起作用,
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_Init(GPIOA, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource10);
EXTI_InitStructure.EXTI_Line = EXTI_Line1;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;//0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;//0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
EXTI_GenerateSWInterrupt(EXTI_Line1);
当我高PA10引脚时,我没有得到软件中断,代码不去EXTI1_IRQHandler()
,似乎缺少什么?编辑在EXTI_GetFlagStatus
我得到 0EXTI_GETITStatus
我得到 0
PA9
连接到Line9
,并通过EXTI9_5_IRQHandler (EXTI9_5_IRQn)
PA10
Line 10
中断服务,EXTI15_10_IRQHandler (EXTI15_10_IRQn)