编译时报错：头文件内的定义未定义
..\F207_PRO\head\stm32f2xx.h(135): error: #20: identifier "NonMaskableInt_IRQn" is undefined..\F207_PRO\head\stm32f2xx.h(136): error: #20: identifier "MemoryManagement_IRQn" is undefined
头文件里已经有如下定义，为什么会报头文件错误呢？
typedef enum
{
/****** Cortex-M3 Processor Exceptions Numbers ****************************************************************/
NonMaskableInt_IRQn = -14, /*!< 2 Non Maskable Interrupt */
MemoryManagement_IRQn = -12, /*!< 4 Cortex-M3 Memory Management Interrupt */
BusFault_IRQn = -11, /*!< 5 Cortex-M3 Bus Fault Interrupt */
UsageFault_IRQn = -10, /*!< 6 Cortex-M3 Usage Fault Interrupt */
SVCall_IRQn = -5, /*!< 11 Cortex-M3 SV Call Interrupt */
DebugMonitor_IRQn = -4, /*!< 12 Cortex-M3 Debug Monitor Interrupt */
PendSV_IRQn = -2, /*!< 14 Cortex-M3 Pend SV Interrupt */
SysTick_IRQn = -1, /*!< 15 Cortex-M3 System Tick Interrupt */
/****** STM32 specific Interrupt Numbers **********************************************************************/
WWDG_IRQn = 0, /*!< Window WatchDog Interrupt */
PVD_IRQn = 1, /*!< PVD through EXTI Line detection Interrupt */
TAMP_STAMP_IRQn = 2, /*!< Tamper and TimeStamp interrupts through the EXTI line */
RTC_WKUP_IRQn = 3, /*!< RTC Wakeup interrupt through the EXTI line */
FLASH_IRQn = 4, /*!< 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 Line4 Interrupt */
DMA1_Stream0_IRQn = 11, /*!< DMA1 Stream 0 global Interrupt */
DMA1_Stream1_IRQn = 12, /*!< DMA1 Stream 1 global Interrupt */
DMA1_Stream2_IRQn = 13, /*!< DMA1 Stream 2 global Interrupt */
DMA1_Stream3_IRQn = 14, /*!< DMA1 Stream 3 global Interrupt */
DMA1_Stream4_IRQn = 15, /*!< DMA1 Stream 4 global Interrupt */
DMA1_Stream5_IRQn = 16, /*!< DMA1 Stream 5 global Interrupt */
DMA1_Stream6_IRQn = 17, /*!< DMA1 Stream 6 global Interrupt */
ADC_IRQn = 18, /*!< ADC1, ADC2 and ADC3 global Interrupts */
CAN1_TX_IRQn = 19, /*!< CAN1 TX Interrupt */
CAN1_RX0_IRQn = 20, /*!< CAN1 RX0 Interrupt */
CAN1_RX1_IRQn = 21, /*!< CAN1 RX1 Interrupt */
CAN1_SCE_IRQn = 22, /*!< CAN1 SCE Interrupt */
EXTI9_5_IRQn = 23, /*!< External Line Interrupts */
TIM1_BRK_TIM9_IRQn = 24, /*!< TIM1 Break interrupt and TIM9 global interrupt */
TIM1_UP_TIM10_IRQn = 25, /*!< TIM1 Update Interrupt and TIM10 global interrupt */
TIM1_TRG_COM_TIM11_IRQn = 26, /*!< TIM1 Trigger and Commutation Interrupt and TIM11 global interrupt */
TIM1_CC_IRQn = 27, /*!< TIM1 Capture Compare Interrupt */
TIM2_IRQn = 28, /*!< TIM2 global Interrupt */
TIM3_IRQn = 29, /*!< TIM3 global Interrupt */
TIM4_IRQn = 30, /*!< TIM4 global Interrupt */
I2C1_EV_IRQn = 31, /*!< I2C1 Event Interrupt */
I2C1_ER_IRQn = 32, /*!< I2C1 Error Interrupt */
I2C2_EV_IRQn = 33, /*!< I2C2 Event Interrupt */
I2C2_ER_IRQn = 34, /*!< I2C2 Error Interrupt */
SPI1_IRQn = 35, /*!< SPI1 global Interrupt */
SPI2_IRQn = 36, /*!< SPI2 global Interrupt */
USART1_IRQn = 37, /*!< USART1 global Interrupt */
USART2_IRQn = 38, /*!< USART2 global Interrupt */
USART3_IRQn = 39, /*!< USART3 global Interrupt */
EXTI15_10_IRQn = 40, /*!< External Line Interrupts */
RTC_Alarm_IRQn = 41, /*!< RTC Alarm (A and B) through EXTI Line Interrupt */
OTG_FS_WKUP_IRQn = 42, /*!< USB OTG FS Wakeup through EXTI line interrupt */
TIM8_BRK_TIM12_IRQn = 43, /*!< TIM8 Break Interrupt and TIM12 global interrupt */
TIM8_UP_TIM13_IRQn = 44, /*!< TIM8 Update Interrupt and TIM13 global interrupt */
TIM8_TRG_COM_TIM14_IRQn = 45, /*!< TIM8 Trigger and Commutation Interrupt and TIM14 global interrupt */
TIM8_CC_IRQn = 46, /*!< TIM8 Capture Compare Interrupt */
DMA1_Stream7_IRQn = 47, /*!< DMA1 Stream7 Interrupt */
FSMC_IRQn = 48, /*!< FSMC global Interrupt */
SDIO_IRQn = 49, /*!< SDIO global Interrupt */
TIM5_IRQn = 50, /*!< TIM5 global Interrupt */
SPI3_IRQn = 51, /*!< SPI3 global Interrupt */
UART4_IRQn = 52, /*!< UART4 global Interrupt */
UART5_IRQn = 53, /*!< UART5 global Interrupt */
TIM6_DAC_IRQn = 54, /*!< TIM6 global and DAC1&2 underrun error interrupts */
TIM7_IRQn = 55, /*!< TIM7 global interrupt */
DMA2_Stream0_IRQn = 56, /*!< DMA2 Stream 0 global Interrupt */
DMA2_Stream1_IRQn = 57, /*!< DMA2 Stream 1 global Interrupt */
DMA2_Stream2_IRQn = 58, /*!< DMA2 Stream 2 global Interrupt */
DMA2_Stream3_IRQn = 59, /*!< DMA2 Stream 3 global Interrupt */
DMA2_Stream4_IRQn = 60, /*!< DMA2 Stream 4 global Interrupt */
ETH_IRQn = 61, /*!< Ethernet global Interrupt */
ETH_WKUP_IRQn = 62, /*!< Ethernet Wakeup through EXTI line Interrupt */
CAN2_TX_IRQn = 63, /*!< CAN2 TX Interrupt */
CAN2_RX0_IRQn = 64, /*!< CAN2 RX0 Interrupt */
CAN2_RX1_IRQn = 65, /*!< CAN2 RX1 Interrupt */
CAN2_SCE_IRQn = 66, /*!< CAN2 SCE Interrupt */
OTG_FS_IRQn = 67, /*!< USB OTG FS global Interrupt */
DMA2_Stream5_IRQn = 68, /*!< DMA2 Stream 5 global interrupt */
DMA2_Stream6_IRQn = 69, /*!< DMA2 Stream 6 global interrupt */
DMA2_Stream7_IRQn = 70, /*!< DMA2 Stream 7 global interrupt */
USART6_IRQn = 71, /*!< USART6 global interrupt */
I2C3_EV_IRQn = 72, /*!< I2C3 event interrupt */
I2C3_ER_IRQn = 73, /*!< I2C3 error interrupt */
OTG_HS_EP1_OUT_IRQn = 74, /*!< USB OTG HS End Point 1 Out global interrupt */
OTG_HS_EP1_IN_IRQn = 75, /*!< USB OTG HS End Point 1 In global interrupt */
OTG_HS_WKUP_IRQn = 76, /*!< USB OTG HS Wakeup through EXTI interrupt */
OTG_HS_IRQn = 77, /*!< USB OTG HS global interrupt */
DCMI_IRQn = 78, /*!< DCMI global interrupt */
CRYP_IRQn = 79, /*!< CRYP crypto global interrupt */
HASH_RNG_IRQn = 80 /*!< Hash and Rng global interrupt */
} IRQn_Type;
回复:编译时报错：头文件内的定义未定义
是不是 你还没有把文件 包含进来啊 你看看 你工程的包含文件RE:编译时报错：头文件内的定义未定义
这个提示是未定义NonMaskableInt_IRQn，你看一下是否将头文件路径配置正确。可以发工程上来，大家帮你解决一下。
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