不好意思，刚才发的代码有问题，下面的是正确的。 还请各位多多帮忙，拜谢。 void COMP_Config(void) { NVIC_InitTypeDef NVIC_InitStructure; //COMP_InitTypeDef COMP_InitStructure; EXTI_InitTypeDef EXTI_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); /* Configure PA4 in analog mode */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;----------------------------------------更改 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIOA, &GPIO_InitStructure);---------------------------------------------更改 /* COMP Peripheral clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_COMP, ENABLE); COMP_Cmd(ENABLE); /* Enable the Comparator 1 */ Delay(1); SYSCFG_RISwitchControlModeCmd(ENABLE);/* Enable the switch control mode */ SYSCFG_RIIOSwitchConfig(RI_IOSwitch_VCOMP, ENABLE);/* Close the ADC analog switch VCOMP */ SYSCFG_RIIOSwitchConfig(RI_IOSwitch_CH4, ENABLE); /* Close the I/O analog switch number 4 */----------------------------------------更改 /* Configure and enable EXTI21 */ EXTI_InitStructure.EXTI_Line = EXTI_Line21; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); /* Configure and enable COMP interrupt */ NVIC_InitStructure.NVIC_IRQChannel = COMP_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0f; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0f; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); }
