你打开stm32的启动文件，例如startup_stm32f10x_hd.s 里面有很多中断跳转的入口。用白话说就是固件库帮你写好了发生什么中断时跳转到哪里，这些名字是一个函数名，你要把这些函数写出来，然后中断来了stm32就跳到这样函数名的函数里面来。这些函数不一定要放到stm32f10x_it.c这个文件里，随便在哪个 .c 文件中都行，固件库都搞到这个stm32f10x_it.c文件里是为了方便统一管理吧。中断无需声明，没有返回值。下面举几个例子，希望对你有用！

DCD EXTI0_IRQHandler ; EXTI Line 0
) t& a7 V3 V% A+ D) |9 E. d, mDCD EXTI1_IRQHandler ; EXTI Line 1
# u/ [1 h/ _) X( }" k6 TDCD EXTI2_IRQHandler ; EXTI Line 2
DCD EXTI3_IRQHandler ; EXTI Line 3
9 ^! \1 j9 z8 ?2 h* r4 |8 W) i' nDCD EXTI4_IRQHandler ; EXTI Line 4

DCD EXTI9_5_IRQHandler ; EXTI Line 9..5

DCD EXTI15_10_IRQHandler ; EXTI Line 15..10

' C6 o7 s+ s3 f

在启动文件中　　　

__Vectors DCD __initial_sp ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
DCD MemManage_Handler ; MPU Fault Handler
DCD BusFault_Handler ; Bus Fault Handler
) T8 K7 C; z2 ~0 s7 RDCD UsageFault_Handler ; Usage Fault Handler
) e+ {* u, O2 `7 l; v4 DDCD 0 ; Reserved
DCD 0 ; Reserved
- K9 J3 F6 A/ b8 z; BDCD 0 ; Reserved
DCD 0 ; Reserved
DCD SVC_Handler ; SVCall Handler
, J& ^0 Z- L6 Y1 |5 vDCD DebugMon_Handler ; Debug Monitor Handler
! s; p, S2 p* K: vDCD 0 ; Reserved
DCD PendSV_Handler ; PendSV Handler
DCD SysTick_Handler ; SysTick Handler

; External Interrupts
' @- j0 z: l8 _8 Q) g& u6 SDCD WWDG_IRQHandler ; Window Watchdog
DCD PVD_IRQHandler ; PVD through EXTI Line detect
DCD TAMPER_IRQHandler ; Tamper
6 q% l3 x1 v" M* p( uDCD RTC_IRQHandler ; RTC
! T% z/ X: j4 k6 yDCD FLASH_IRQHandler ; Flash
DCD RCC_IRQHandler ; RCC
DCD EXTI0_IRQHandler ; EXTI Line 0
DCD EXTI1_IRQHandler ; EXTI Line 1
5 v" ~- ~2 n, c7 f. Y) t- lDCD EXTI2_IRQHandler ; EXTI Line 2
DCD EXTI3_IRQHandler ; EXTI Line 3
DCD EXTI4_IRQHandler ; EXTI Line 4
DCD DMA1_Channel1_IRQHandler ; DMA1 Channel 1
DCD DMA1_Channel2_IRQHandler ; DMA1 Channel 2
( R* n, n& a) b  k9 R) g6 \' m# CDCD DMA1_Channel3_IRQHandler ; DMA1 Channel 3
DCD DMA1_Channel4_IRQHandler ; DMA1 Channel 4
DCD DMA1_Channel5_IRQHandler ; DMA1 Channel 5
+ @4 m  F6 O% p6 H( zDCD DMA1_Channel6_IRQHandler ; DMA1 Channel 6
+ m( {2 ]  K; f: n  iDCD DMA1_Channel7_IRQHandler ; DMA1 Channel 7
$ u$ H/ a$ H8 T/ D) ?DCD ADC1_2_IRQHandler ; ADC1 & ADC2
0 J1 Y. }/ \  c* x& O7 T3 ~8 LDCD USB_HP_CAN1_TX_IRQHandler ; USB High Priority or CAN1 TX
DCD USB_LP_CAN1_RX0_IRQHandler ; USB Low Priority or CAN1 RX0
7 E; H$ @, G8 CDCD CAN1_RX1_IRQHandler ; CAN1 RX1
' ]% k6 T8 l: D! q' ~$ kDCD CAN1_SCE_IRQHandler ; CAN1 SCE
/ z+ S4 B) o7 T- D' UDCD EXTI9_5_IRQHandler ; EXTI Line 9..5
DCD TIM1_BRK_IRQHandler ; TIM1 Break
DCD TIM1_UP_IRQHandler ; TIM1 Update
7 J1 l8 t3 @1 f9 k6 P$ o0 tDCD TIM1_TRG_COM_IRQHandler ; TIM1 Trigger and Commutation
5 P  }) b; ~! b+ l( \$ c# }DCD TIM1_CC_IRQHandler ; TIM1 Capture Compare
( Y6 K  N& h! Q& G6 D6 uDCD TIM2_IRQHandler ; TIM2
DCD TIM3_IRQHandler ; TIM3
# e' A- z  }5 P* I( ~+ LDCD TIM4_IRQHandler ; TIM4
DCD I2C1_EV_IRQHandler ; I2C1 Event
DCD I2C1_ER_IRQHandler ; I2C1 Error
DCD I2C2_EV_IRQHandler ; I2C2 Event
- `" ]' b3 Y! k2 B3 f) N* oDCD I2C2_ER_IRQHandler ; I2C2 Error
DCD SPI1_IRQHandler ; SPI1
9 J$ A4 B" \2 Z) T2 {DCD SPI2_IRQHandler ; SPI2
5 t6 a4 i3 v7 F7 }DCD USART1_IRQHandler ; USART1
" C3 u1 _; V/ U) rDCD USART2_IRQHandler ; USART2
DCD USART3_IRQHandler ; USART3
( B- V1 N- F. aDCD EXTI15_10_IRQHandler ; EXTI Line 15..10
- S, w  u1 g! O) d" n3 r; }1 mDCD RTCAlarm_IRQHandler ; RTC Alarm through EXTI Line
- Q3 ^, ^, _9 p! o5 [DCD USBWakeUp_IRQHandler ; USB Wakeup from suspend
8 u/ f# U& x$ P: i, ^9 d) N% kDCD TIM8_BRK_IRQHandler ; TIM8 Break
DCD TIM8_UP_IRQHandler ; TIM8 Update
1 l# R: |, u* u$ Q& X+ |, kDCD TIM8_TRG_COM_IRQHandler ; TIM8 Trigger and Commutation
# B  W) @& z$ |" X, ]. \DCD TIM8_CC_IRQHandler ; TIM8 Capture Compare
DCD ADC3_IRQHandler ; ADC3
0 v8 x9 |6 f: J/ f0 W' [DCD FSMC_IRQHandler ; FSMC
DCD SDIO_IRQHandler ; SDIO
DCD TIM5_IRQHandler ; TIM5
DCD SPI3_IRQHandler ; SPI3
7 c0 K1 U  A' VDCD UART4_IRQHandler ; UART4
DCD UART5_IRQHandler ; UART5
0 o0 N! f, f- ~0 \DCD TIM6_IRQHandler ; TIM6
3 D2 D" d" _) m+ W1 P) xDCD TIM7_IRQHandler ; TIM7
$ O9 ?6 ^6 x- ~. u7 _% e; ]8 T  x, MDCD DMA2_Channel1_IRQHandler ; DMA2 Channel1
% a$ ~, p6 z" h! W- ADCD DMA2_Channel2_IRQHandler ; DMA2 Channel2
7 u( f: C% U+ v* dDCD DMA2_Channel3_IRQHandler ; DMA2 Channel3
DCD DMA2_Channel4_5_IRQHandler ; DMA2 Channel4 & Channel5
; t) n( j& S! G  `5 `__Vectors_End