- typedef enum IRQn
- {
- /****** Cortex-M4 Processor Exceptions Numbers ******/
- NonMaskableInt_IRQn = -14, /*!< 2 Non Maskable Interrupt */
- MemoryManagement_IRQn = -12, /*!< 4 Memory Management Interrupt */
- BusFault_IRQn = -11, /*!< 5 Bus Fault Interrupt */
- UsageFault_IRQn = -10, /*!< 6 Usage Fault Interrupt */
- SVCall_IRQn = -5, /*!< 11 SV Call Interrupt */
- DebugMonitor_IRQn = -4, /*!< 12 Debug Monitor Interrupt */
- PendSV_IRQn = -2, /*!< 14 Pend SV Interrupt */
- SysTick_IRQn = -1, /*!< 15 System Tick Interrupt */
- /****** M451 Specific Interrupt Numbers *****/
- BOD_IRQn = 0, /*!< Brown Out detection Interrupt */
- IRC_IRQn = 1, /*!< Internal RC Interrupt */
- PWRWU_IRQn = 2, /*!< Power Down Wake Up Interrupt */
- RAMPE_IRQn = 3, /*!< SRAM parity check failed Interrupt */
- CKFAIL_IRQn = 4, /*!< Clock failed Interrupt */
- RTC_IRQn = 6, /*!< Real Time Clock Interrupt */
- TAMPER_IRQn = 7, /*!< Tamper detection Interrupt */
- WDT_IRQn = 8, /*!< Watchdog Timer Interrupt */
- WWDT_IRQn = 9, /*!< Window Watchdog Timer Interrupt */
- EINT0_IRQn = 10, /*!< External Input 0 Interrupt */
- EINT1_IRQn = 11, /*!< External Input 1 Interrupt */
- EINT2_IRQn = 12, /*!< External Input 2 Interrupt */
- EINT3_IRQn = 13, /*!< External Input 3 Interrupt */
- EINT4_IRQn = 14, /*!< External Input 4 Interrupt */
- EINT5_IRQn = 15, /*!< External Input 5 Interrupt */
- GPA_IRQn = 16, /*!< GPIO Port A Interrupt */
- GPB_IRQn = 17, /*!< GPIO Port B Interrupt */
- GPC_IRQn = 18, /*!< GPIO Port C Interrupt */
- GPD_IRQn = 19, /*!< GPIO Port D Interrupt */
- GPE_IRQn = 20, /*!< GPIO Port E Interrupt */
- GPF_IRQn = 21, /*!< GPIO Port F Interrupt */
- SPI0_IRQn = 22, /*!< SPI0 Interrupt */
- SPI1_IRQn = 23, /*!< SPI1 Interrupt */
- BRAKE0_IRQn = 24, /*!< BRAKE0 Interrupt */
- PWM0P0_IRQn = 25, /*!< PWM0P0 Interrupt */
- PWM0P1_IRQn = 26, /*!< PWM0P1 Interrupt */
- PWM0P2_IRQn = 27, /*!< PWM0P2 Interrupt */
- BRAKE1_IRQn = 28, /*!< BRAKE1 Interrupt */
- PWM1P0_IRQn = 29, /*!< PWM1P0 Interrupt */
- PWM1P1_IRQn = 30, /*!< PWM1P1 Interrupt */
- PWM1P2_IRQn = 31, /*!< PWM1P2 Interrupt */
- TMR0_IRQn = 32, /*!< Timer 0 Interrupt */
- TMR1_IRQn = 33, /*!< Timer 1 Interrupt */
- TMR2_IRQn = 34, /*!< Timer 2 Interrupt */
- TMR3_IRQn = 35, /*!< Timer 3 Interrupt */
- UART0_IRQn = 36, /*!< UART 0 Interrupt */
- UART1_IRQn = 37, /*!< UART 1 Interrupt */
- I2C0_IRQn = 38, /*!< I2C 0 Interrupt */
- I2C1_IRQn = 39, /*!< I2C 1 Interrupt */
- PDMA_IRQn = 40, /*!< Peripheral DMA Interrupt */
- DAC_IRQn = 41, /*!< DAC Interrupt */
- ADC00_IRQn = 42, /*!< ADC0 Source 0 Interrupt */
- ADC01_IRQn = 43, /*!< ADC0 Source 1 Interrupt */
- ACMP01_IRQn = 44, /*!< Analog Comparator 0 and 1 Interrupt */
- ADC02_IRQn = 46, /*!< ADC0 Source 2 Interrupt */
- ADC03_IRQn = 47, /*!< ADC0 Source 3 Interrupt */
- UART2_IRQn = 48, /*!< UART2 Interrupt */
- UART3_IRQn = 49, /*!< UART3 Interrupt */
- SPI2_IRQn = 51, /*!< SPI2 Interrupt */
- USBD_IRQn = 53, /*!< USB device Interrupt */
- USBH_IRQn = 54, /*!< USB host Interrupt */
- USBOTG_IRQn = 55, /*!< USB OTG Interrupt */
- CAN0_IRQn = 56, /*!< CAN0 Interrupt */
- SC0_IRQn = 58, /*!< Smart Card 0 Interrupt */
- TK_IRQn = 63 /*!< Touch Key Interrupt */
- } IRQn_Type;
通中断处理函数名则加后缀“_IRQHandler”。这些异常中断处理函数被定义为 weak 属性， 以便在其他的文件中重新实现时不出现
重复定义的错误。这些处理函数的地址用来填充中断异常向量表，并在启动代码中给以声明，例如：BOD_IRQHandler、
WDT_IRQHandler、TMR0_IRQHandler、UART0_IRQHandler 等。
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