试了一下 还是不能进入中断。 用printf观察到IRQ引脚有高低变化，但是还是进入不了中断。。（时钟已经在别的函数里打开）
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/* CE(PB10) IRQ(PB11) CS(PB12) SCK(PB13) SPI_MISO(PB14) SPI_MOSI(PB15) */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;//普通输出模式 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//100MHz GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化PG6,7 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;//普通输出模式 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//100MHz GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化PG6,7 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//100MHz GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化PB14
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EXTI_InitTypeDef EXTI_InitStructure;EXTI_InitStructure.EXTI_Line=EXTI_Line11; //使能外部中断线5 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //外部中断EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; //下降沿触发EXTI_InitStructure.EXTI_LineCmd = ENABLE; //中断线使能EXTI_Init(&EXTI_InitStructure);
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NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn; //串口中断 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //抢占优先级0NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; //子优先级为0NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能NVIC_Init(&NVIC_InitStructure);
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void EXTI15_10_Handler(){SystemInit();printf("22243436554");EXTI_ClearITPendingBit(EXTI_Line11);}
试了一下 还是不能进入中断。 用printf观察到IRQ引脚有高低变化，但是还是进入不了中断。。（时钟已经在别的函数里打开）
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/* CE(PB10) IRQ(PB11) CS(PB12) SCK(PB13) SPI_MISO(PB14) SPI_MOSI(PB15) */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;//普通输出模式 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//100MHz GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化PG6,7 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;//普通输出模式 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//100MHz GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化PG6,7 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//100MHz GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化PB14
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EXTI_InitTypeDef EXTI_InitStructure;EXTI_InitStructure.EXTI_Line=EXTI_Line11; //使能外部中断线5 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //外部中断EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; //下降沿触发EXTI_InitStructure.EXTI_LineCmd = ENABLE; //中断线使能EXTI_Init(&EXTI_InitStructure);
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NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn; //串口中断 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //抢占优先级0NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; //子优先级为0NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能NVIC_Init(&NVIC_InitStructure);
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void EXTI15_10_Handler(){SystemInit();printf("22243436554");EXTI_ClearITPendingBit(EXTI_Line11);}
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