stm32 NVIC
NVIC的分组
STM32 HD系列的NVIC通道
0-60
WWDG_IRQn = 0, /*!< Window WatchDog Interrupt */
PVD_IRQn = 1, /*!< PVD through EXTI Line detection Interrupt */
TAMPER_IRQn = 2, /*!< Tamper Interrupt */
RTC_IRQn = 3, /*!< RTC global Interrupt */
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_Channel1_IRQn = 11, /*!< DMA1 Channel 1 global Interrupt */
DMA1_Channel2_IRQn = 12, /*!< DMA1 Channel 2 global Interrupt */
DMA1_Channel3_IRQn = 13, /*!< DMA1 Channel 3 global Interrupt */
DMA1_Channel4_IRQn = 14, /*!< DMA1 Channel 4 global Interrupt */
DMA1_Channel5_IRQn = 15, /*!< DMA1 Channel 5 global Interrupt */
DMA1_Channel6_IRQn = 16, /*!< DMA1 Channel 6 global Interrupt */
DMA1_Channel7_IRQn = 17, /*!< DMA1 Channel 7 global Interrupt */
#ifdef STM32F10X_HD
ADC1_2_IRQn = 18, /*!< ADC1 and ADC2 global Interrupt */
USB_HP_CAN1_TX_IRQn = 19, /*!< USB Device High Priority or CAN1 TX Interrupts */
USB_LP_CAN1_RX0_IRQn = 20, /*!< USB Device Low Priority or CAN1 RX0 Interrupts */
CAN1_RX1_IRQn = 21, /*!< CAN1 RX1 Interrupt */
CAN1_SCE_IRQn = 22, /*!< CAN1 SCE Interrupt */
EXTI9_5_IRQn = 23, /*!< External Line[9:5] Interrupts */
TIM1_BRK_IRQn = 24, /*!< TIM1 Break Interrupt */
TIM1_UP_IRQn = 25, /*!< TIM1 Update Interrupt */
TIM1_TRG_COM_IRQn = 26, /*!< TIM1 Trigger and Commutation 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[15:10] Interrupts */
RTCAlarm_IRQn = 41, /*!< RTC Alarm through EXTI Line Interrupt */
USBWakeUp_IRQn = 42, /*!< USB Device WakeUp from suspend through EXTI Line Interrupt */
TIM8_BRK_IRQn = 43, /*!< TIM8 Break Interrupt */
TIM8_UP_IRQn = 44, /*!< TIM8 Update Interrupt */
TIM8_TRG_COM_IRQn = 45, /*!< TIM8 Trigger and Commutation Interrupt */
TIM8_CC_IRQn = 46, /*!< TIM8 Capture Compare Interrupt */
ADC3_IRQn = 47, /*!< ADC3 global 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_IRQn = 54, /*!< TIM6 global Interrupt */
TIM7_IRQn = 55, /*!< TIM7 global Interrupt */
DMA2_Channel1_IRQn = 56, /*!< DMA2 Channel 1 global Interrupt */
DMA2_Channel2_IRQn = 57, /*!< DMA2 Channel 2 global Interrupt */
DMA2_Channel3_IRQn = 58, /*!< DMA2 Channel 3 global Interrupt */
DMA2_Channel4_5_IRQn = 59 /*!< DMA2 Channel 4 and Channel 5 global Interrupt */
#endif /* STM32F10X_HD */
NVIC各通道中断设置是通过NVIC_ISERx寄存器,在CMSIS中它通过数组来实现__IO uint32_t ISER[8];每个通道与ISERx中的一个bit对应。
通道0-31 与ISER[0]中的每位对应。
stm32中断优先级
中断优先级寄存器NVIC_IPRx,在CMSIS中它通过数组来实现,__IO uint8_t IP[240];
IP是8位，每4个对应一个NVIC_IPRx寄存器。处理器只处理IP[x]的bits[7:4];