IRQ Numbers and EXTI Lines

IRQ position enumeration and EXTI line definitions. More...

Collaboration diagram for IRQ Numbers and EXTI Lines:

Enumerations
enum	IRQn_te {   WWDG_IRQn = 0 , EXTI16_IRQn = 1 , EXTI21_IRQn = 2 , EXTI22_IRQn = 3 ,   FLASH_IRQn = 4 , RCC_IRQn = 5 , EXTI0_IRQn = 6 , EXTI1_IRQn = 7 ,   EXTI2_IRQn = 8 , EXTI3_IRQn = 9 , EXTI4_IRQn = 10 , DMA1_Stream0_IRQn = 11 ,   DMA1_Stream1_IRQn = 12 , DMA1_Stream2_IRQn = 13 , DMA1_Stream3_IRQn = 14 , DMA1_Stream4_IRQn = 15 ,   DMA1_Stream5_IRQn = 16 , DMA1_Stream6_IRQn = 17 , ADC_IRQn = 18 , EXTI9_5_IRQn = 23 ,   TIM1_BRK_TIM9_IRQn = 24 , TIM1_UP_TIM10_IRQn = 25 , TIM1_TRG_COM_TIM11_IRQn = 26 , TIM1_CC_IRQn = 27 ,   TIM2_IRQn = 28 , TIM3_IRQn = 29 , TIM4_IRQn = 30 , I2C1_EV_IRQn = 31 ,   I2C1_ER_IRQn = 32 , I2C2_EV_IRQn = 33 , I2C2_ER_IRQn = 34 , SPI1_IRQn = 35 ,   SPI2_IRQn = 36 , USART1_IRQn = 37 , USART2_IRQn = 38 , EXTI15_10_IRQn = 40 ,   EXTI17_IRQn = 41 , EXTI18_IRQn = 42 , DMA1_Stream7_IRQn = 47 , SDIO_IRQn = 49 ,   TIM5_IRQn = 50 , SPI3_IRQn = 51 , DMA2_Stream0_IRQn = 56 , DMA2_Stream1_IRQn = 57 ,   DMA2_Stream2_IRQn = 58 , DMA2_Stream3_IRQn = 59 , DMA2_Stream4_IRQn = 60 , OTG_FS_IRQn = 67 ,   DMA2_Stream5_IRQn = 68 , DMA2_Stream6_IRQn = 69 , DMA2_Stream7_IRQn = 70 , USART6_IRQn = 71 ,   I2C3_EV_IRQn = 72 , I2C3_ER_IRQn = 73 , FPU_IRQn = 81 , SPI4_IRQn = 84 }
	IRQ numbers in the STM32F401RE Cortex-M4 vector table. More...
enum	EXTI_LINES_te {   EXTI_LINE_0 , EXTI_LINE_1 , EXTI_LINE_2 , EXTI_LINE_3 ,   EXTI_LINE_4 , EXTI_LINE_5 , EXTI_LINE_6 , EXTI_LINE_7 ,   EXTI_LINE_8 , EXTI_LINE_9 , EXTI_LINE_10 , EXTI_LINE_11 ,   EXTI_LINE_12 , EXTI_LINE_13 , EXTI_LINE_14 , EXTI_LINE_15 ,   EXTI_LINE_16 , EXTI_LINE_17 , EXTI_LINE_18 , EXTI_LINE_21 = 21 ,   EXTI_LINE_22 }
	EXTI line numbers. More...
enum	PORT_CODES_ts {   PA = 0 , PB = 1 , PC = 2 , PD = 3 ,   PE = 4 , PH = 7 }
	SYSCFG port codes for EXTICRx routing. More...

Detailed Description

IRQ position enumeration and EXTI line definitions.

Enumeration Type Documentation

IRQn_te

enum IRQn_te

IRQ numbers in the STM32F401RE Cortex-M4 vector table.

Values correspond to the position offset from the first device IRQ (IRQ0), used directly as the argument to nvic_set_interrupt.

Enumerator
WWDG_IRQn	Window watchdog interrupt.
EXTI16_IRQn	PVD through EXTI line 16.
EXTI21_IRQn	Tamper and timestamp through EXTI line 21.
EXTI22_IRQn	RTC wakeup through EXTI line 22.
FLASH_IRQn	Flash global interrupt.
RCC_IRQn	RCC global interrupt.
EXTI0_IRQn	EXTI line 0 interrupt.
EXTI1_IRQn	EXTI line 1 interrupt.
EXTI2_IRQn	EXTI line 2 interrupt.
EXTI3_IRQn	EXTI line 3 interrupt.
EXTI4_IRQn	EXTI line 4 interrupt.
DMA1_Stream0_IRQn	DMA1 stream 0 global interrupt.
DMA1_Stream1_IRQn	DMA1 stream 1 global interrupt.
DMA1_Stream2_IRQn	DMA1 stream 2 global interrupt.
DMA1_Stream3_IRQn	DMA1 stream 3 global interrupt.
DMA1_Stream4_IRQn	DMA1 stream 4 global interrupt.
DMA1_Stream5_IRQn	DMA1 stream 5 global interrupt.
DMA1_Stream6_IRQn	DMA1 stream 6 global interrupt.
ADC_IRQn	ADC1 global interrupt.
EXTI9_5_IRQn	EXTI lines 5–9 shared interrupt.
TIM1_BRK_TIM9_IRQn	TIM1 break / TIM9 global interrupt.
TIM1_UP_TIM10_IRQn	TIM1 update / TIM10 global interrupt.
TIM1_TRG_COM_TIM11_IRQn	TIM1 trigger+commutation / TIM11 global interrupt.
TIM1_CC_IRQn	TIM1 capture compare interrupt.
TIM2_IRQn	TIM2 global interrupt.
TIM3_IRQn	TIM3 global interrupt.
TIM4_IRQn	TIM4 global interrupt.
I2C1_EV_IRQn	I2C1 event interrupt.
I2C1_ER_IRQn	I2C1 error interrupt.
I2C2_EV_IRQn	I2C2 event interrupt.
I2C2_ER_IRQn	I2C2 error interrupt.
SPI1_IRQn	SPI1 global interrupt.
SPI2_IRQn	SPI2 global interrupt.
USART1_IRQn	USART1 global interrupt.
USART2_IRQn	USART2 global interrupt.
EXTI15_10_IRQn	EXTI lines 10–15 shared interrupt.
EXTI17_IRQn	RTC alarm through EXTI line 17.
EXTI18_IRQn	USB OTG FS wakeup through EXTI line 18.
DMA1_Stream7_IRQn	DMA1 stream 7 global interrupt.
SDIO_IRQn	SDIO global interrupt.
TIM5_IRQn	TIM5 global interrupt.
SPI3_IRQn	SPI3 global interrupt.
DMA2_Stream0_IRQn	DMA2 stream 0 global interrupt.
DMA2_Stream1_IRQn	DMA2 stream 1 global interrupt.
DMA2_Stream2_IRQn	DMA2 stream 2 global interrupt.
DMA2_Stream3_IRQn	DMA2 stream 3 global interrupt.
DMA2_Stream4_IRQn	DMA2 stream 4 global interrupt.
OTG_FS_IRQn	USB OTG FS global interrupt.
DMA2_Stream5_IRQn	DMA2 stream 5 global interrupt.
DMA2_Stream6_IRQn	DMA2 stream 6 global interrupt.
DMA2_Stream7_IRQn	DMA2 stream 7 global interrupt.
USART6_IRQn	USART6 global interrupt.
I2C3_EV_IRQn	I2C3 event interrupt.
I2C3_ER_IRQn	I2C3 error interrupt.
FPU_IRQn	FPU global interrupt.
SPI4_IRQn	SPI4 global interrupt.

Definition at line 771 of file stm32f401re.h.

{
    WWDG_IRQn               = 0,  
    EXTI16_IRQn             = 1,  
    EXTI21_IRQn             = 2,  
    EXTI22_IRQn             = 3,  
    FLASH_IRQn              = 4,  
    RCC_IRQn                = 5,  
    EXTI0_IRQn              = 6,  
    EXTI1_IRQn              = 7,  
    EXTI2_IRQn              = 8,  
    EXTI3_IRQn              = 9,  
    EXTI4_IRQn              = 10, 
    DMA1_Stream0_IRQn       = 11, 
    DMA1_Stream1_IRQn       = 12, 
    DMA1_Stream2_IRQn       = 13, 
    DMA1_Stream3_IRQn       = 14, 
    DMA1_Stream4_IRQn       = 15, 
    DMA1_Stream5_IRQn       = 16, 
    DMA1_Stream6_IRQn       = 17, 
    ADC_IRQn                = 18, 
    EXTI9_5_IRQn            = 23, 
    TIM1_BRK_TIM9_IRQn     = 24, 
    TIM1_UP_TIM10_IRQn     = 25, 
    TIM1_TRG_COM_TIM11_IRQn = 26,
    TIM1_CC_IRQn            = 27, 
    TIM2_IRQn               = 28, 
    TIM3_IRQn               = 29, 
    TIM4_IRQn               = 30, 
    I2C1_EV_IRQn            = 31, 
    I2C1_ER_IRQn            = 32, 
    I2C2_EV_IRQn            = 33, 
    I2C2_ER_IRQn            = 34, 
    SPI1_IRQn               = 35, 
    SPI2_IRQn               = 36, 
    USART1_IRQn             = 37, 
    USART2_IRQn             = 38, 
    EXTI15_10_IRQn          = 40, 
    EXTI17_IRQn             = 41, 
    EXTI18_IRQn             = 42, 
    DMA1_Stream7_IRQn       = 47, 
    SDIO_IRQn               = 49, 
    TIM5_IRQn               = 50, 
    SPI3_IRQn               = 51, 
    DMA2_Stream0_IRQn       = 56, 
    DMA2_Stream1_IRQn       = 57, 
    DMA2_Stream2_IRQn       = 58, 
    DMA2_Stream3_IRQn       = 59, 
    DMA2_Stream4_IRQn       = 60, 
    OTG_FS_IRQn             = 67, 
    DMA2_Stream5_IRQn       = 68, 
    DMA2_Stream6_IRQn       = 69, 
    DMA2_Stream7_IRQn       = 70, 
    USART6_IRQn             = 71, 
    I2C3_EV_IRQn            = 72, 
    I2C3_ER_IRQn            = 73, 
    FPU_IRQn                = 81, 
    SPI4_IRQn               = 84  
} IRQn_te;

EXTI_LINES_te

enum EXTI_LINES_te

EXTI line numbers.

Used with gpio_clear_interrupt to identify which EXTI pending flag to clear. Lines 0–15 correspond to GPIO pins 0–15. Lines 16–22 are connected to internal peripherals (PVD, RTC, USB, etc.).

Enumerator
EXTI_LINE_0	EXTI line 0 (GPIO pin 0).
EXTI_LINE_1	EXTI line 1 (GPIO pin 1).
EXTI_LINE_2	EXTI line 2 (GPIO pin 2).
EXTI_LINE_3	EXTI line 3 (GPIO pin 3).
EXTI_LINE_4	EXTI line 4 (GPIO pin 4).
EXTI_LINE_5	EXTI line 5 (GPIO pin 5).
EXTI_LINE_6	EXTI line 6 (GPIO pin 6).
EXTI_LINE_7	EXTI line 7 (GPIO pin 7).
EXTI_LINE_8	EXTI line 8 (GPIO pin 8).
EXTI_LINE_9	EXTI line 9 (GPIO pin 9).
EXTI_LINE_10	EXTI line 10 (GPIO pin 10).
EXTI_LINE_11	EXTI line 11 (GPIO pin 11).
EXTI_LINE_12	EXTI line 12 (GPIO pin 12).
EXTI_LINE_13	EXTI line 13 (GPIO pin 13).
EXTI_LINE_14	EXTI line 14 (GPIO pin 14).
EXTI_LINE_15	EXTI line 15 (GPIO pin 15).
EXTI_LINE_16	EXTI line 16 (PVD output).
EXTI_LINE_17	EXTI line 17 (RTC alarm).
EXTI_LINE_18	EXTI line 18 (USB OTG FS wakeup).
EXTI_LINE_21	EXTI line 21 (RTC tamper and timestamp).
EXTI_LINE_22	EXTI line 22 (RTC wakeup timer).

Definition at line 839 of file stm32f401re.h.

             {
    EXTI_LINE_0,        
    EXTI_LINE_1,        
    EXTI_LINE_2,        
    EXTI_LINE_3,        
    EXTI_LINE_4,        
    EXTI_LINE_5,        
    EXTI_LINE_6,        
    EXTI_LINE_7,        
    EXTI_LINE_8,        
    EXTI_LINE_9,        
    EXTI_LINE_10,       
    EXTI_LINE_11,       
    EXTI_LINE_12,       
    EXTI_LINE_13,       
    EXTI_LINE_14,       
    EXTI_LINE_15,       
    EXTI_LINE_16,       
    EXTI_LINE_17,       
    EXTI_LINE_18,       
    EXTI_LINE_21 = 21,  
    EXTI_LINE_22        
} EXTI_LINES_te;

PORT_CODES_ts

enum PORT_CODES_ts

SYSCFG port codes for EXTICRx routing.

Written into the SYSCFG_EXTICRx 4-bit fields to select which GPIO port is routed to an EXTI line. Used internally by gpio_init. Note: PH = 7 to match the hardware encoding for GPIOH.

Enumerator
PA	Port A.
PB	Port B.
PC	Port C.
PD	Port D.
PE	Port E.
PH	Port H (value 7 to match hardware encoding).

Definition at line 871 of file stm32f401re.h.

             {
    PA = 0, 
    PB = 1, 
    PC = 2, 
    PD = 3, 
    PE = 4, 
    PH = 7  
} PORT_CODES_ts;