非常感大家来看我的贴子: 我想配置 PB2 低电平触发: #define RF_IQR_PIN GPIO_Pin_2 #define RF_IQR_PORT GPIOB GPIO_InitStruct.GPIO_Pin =RF_IQR_PIN; GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN; GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP; GPIO_InitStruct.GPIO_Speed = GPIO_Speed_Level_2; GPIO_Init(RF_IQR_PORT , &GPIO_InitStruct); SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, GPIO_PinSource2); EXTI_InitStructure.EXTI_Line = EXTI_Line2; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI2_3_IRQn ; ?? NVIC_InitStructure.NVIC_IRQChannelPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); 我想问下: NVIC_InitStructure.NVIC_IRQChannel = EXTI2_3_IRQn ; 这个是怎么样配置的列,有哪位帮教教吗 |
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谢谢你的热心回答,我后面才理解到PIN0,PIN1用EXTI0—1IRQn,PIN2,PIN3用EXTI2—3IRQn,PIN4-15用EXTI4—15IRQn。