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
4 H2 l2 `5 {: ]  m5 l# I* K$ |. e$ VDCD EXTI1_IRQHandler ; EXTI Line 1
DCD EXTI2_IRQHandler ; EXTI Line 2
: R$ r$ ~8 F  M& H) q* }, xDCD EXTI3_IRQHandler ; EXTI Line 3
2 C2 }) m5 F# K" c* i/ WDCD EXTI4_IRQHandler ; EXTI Line 4

DCD EXTI9_5_IRQHandler ; EXTI Line 9..5

DCD EXTI15_10_IRQHandler ; EXTI Line 15..10

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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
$ w$ ]9 ?' X+ t0 `; nDCD MemManage_Handler ; MPU Fault Handler
DCD BusFault_Handler ; Bus Fault Handler
  e4 G* m4 E* aDCD UsageFault_Handler ; Usage Fault Handler
. O* f- W7 b, s7 U1 s: I3 nDCD 0 ; Reserved
. ]$ I9 V' n' b* `DCD 0 ; Reserved
9 z1 V* G( C0 u; I  S: oDCD 0 ; Reserved
DCD 0 ; Reserved
DCD SVC_Handler ; SVCall Handler
" Q6 I& @* p2 N  `3 N7 [- iDCD DebugMon_Handler ; Debug Monitor Handler
DCD 0 ; Reserved
& y- m5 V! e# c3 w7 T0 @- `DCD PendSV_Handler ; PendSV Handler
$ Y$ S7 t, h; o: B, T& ^1 [( z$ R6 NDCD SysTick_Handler ; SysTick Handler

; External Interrupts
! Z' [% x! S% rDCD WWDG_IRQHandler ; Window Watchdog
' G7 y* M# M  g4 Q+ kDCD PVD_IRQHandler ; PVD through EXTI Line detect
DCD TAMPER_IRQHandler ; Tamper
1 F, D' s! x# S& v* ?# xDCD RTC_IRQHandler ; RTC
5 p' x2 p8 p4 w5 C: H& ]( ODCD FLASH_IRQHandler ; Flash
DCD RCC_IRQHandler ; RCC
4 @- U7 m7 I; N0 f+ x( o7 [% h, mDCD EXTI0_IRQHandler ; EXTI Line 0
% {. `) F1 {1 c  G( LDCD EXTI1_IRQHandler ; EXTI Line 1
+ [. V2 u% @/ h4 LDCD EXTI2_IRQHandler ; EXTI Line 2
) U/ N" ]- T7 G% p. A  D& WDCD EXTI3_IRQHandler ; EXTI Line 3
* B: ?. l$ {- bDCD EXTI4_IRQHandler ; EXTI Line 4
DCD DMA1_Channel1_IRQHandler ; DMA1 Channel 1
DCD DMA1_Channel2_IRQHandler ; DMA1 Channel 2
4 B- B, h# T) Z. MDCD DMA1_Channel3_IRQHandler ; DMA1 Channel 3
DCD DMA1_Channel4_IRQHandler ; DMA1 Channel 4
DCD DMA1_Channel5_IRQHandler ; DMA1 Channel 5
4 q# v8 `  [* o% ~3 d2 T  n" i/ S; nDCD DMA1_Channel6_IRQHandler ; DMA1 Channel 6
% K8 G. G* k5 n- _2 FDCD DMA1_Channel7_IRQHandler ; DMA1 Channel 7
9 E3 F4 ^4 a& R% @% Q2 ODCD ADC1_2_IRQHandler ; ADC1 & ADC2
DCD USB_HP_CAN1_TX_IRQHandler ; USB High Priority or CAN1 TX
DCD USB_LP_CAN1_RX0_IRQHandler ; USB Low Priority or CAN1 RX0
DCD CAN1_RX1_IRQHandler ; CAN1 RX1
% A& Q$ c2 ]* D$ h1 Z7 vDCD CAN1_SCE_IRQHandler ; CAN1 SCE
: p; v- }4 E; u$ N, {$ T; RDCD EXTI9_5_IRQHandler ; EXTI Line 9..5
7 ~; O$ q" g3 m6 g, hDCD TIM1_BRK_IRQHandler ; TIM1 Break
: M) Y4 a/ \  f" {$ C+ R3 pDCD TIM1_UP_IRQHandler ; TIM1 Update
DCD TIM1_TRG_COM_IRQHandler ; TIM1 Trigger and Commutation
5 n- t3 B( q' p% xDCD TIM1_CC_IRQHandler ; TIM1 Capture Compare
DCD TIM2_IRQHandler ; TIM2
4 k! c' ], E0 w+ E* yDCD TIM3_IRQHandler ; TIM3
DCD TIM4_IRQHandler ; TIM4
DCD I2C1_EV_IRQHandler ; I2C1 Event
9 `' n2 a1 k  I8 Y6 R* zDCD I2C1_ER_IRQHandler ; I2C1 Error
DCD I2C2_EV_IRQHandler ; I2C2 Event
  U. N* ^! u* i1 X7 O! }DCD I2C2_ER_IRQHandler ; I2C2 Error
  |0 u5 T$ h6 e6 e  nDCD SPI1_IRQHandler ; SPI1
& O- t  f+ O' S( Z7 S' J4 q" ADCD SPI2_IRQHandler ; SPI2
8 A" W8 W  m2 gDCD USART1_IRQHandler ; USART1
DCD USART2_IRQHandler ; USART2
DCD USART3_IRQHandler ; USART3
1 `$ J! |( Q# }: {! kDCD EXTI15_10_IRQHandler ; EXTI Line 15..10
; q1 c( Q6 q" h8 s0 g9 kDCD RTCAlarm_IRQHandler ; RTC Alarm through EXTI Line
2 B7 t+ _5 J6 o6 A& a) r, q$ }2 CDCD USBWakeUp_IRQHandler ; USB Wakeup from suspend
DCD TIM8_BRK_IRQHandler ; TIM8 Break
DCD TIM8_UP_IRQHandler ; TIM8 Update
DCD TIM8_TRG_COM_IRQHandler ; TIM8 Trigger and Commutation
+ W8 Z! u/ i; d1 kDCD TIM8_CC_IRQHandler ; TIM8 Capture Compare
DCD ADC3_IRQHandler ; ADC3
DCD FSMC_IRQHandler ; FSMC
9 S' ~6 `6 s& BDCD SDIO_IRQHandler ; SDIO
DCD TIM5_IRQHandler ; TIM5
3 w' L( l) a; @) CDCD SPI3_IRQHandler ; SPI3
/ P  x9 a- P" Z' t- l) h' @; K7 \% ]/ |DCD UART4_IRQHandler ; UART4
3 s% y) k) L1 p/ A) u8 o) B3 JDCD UART5_IRQHandler ; UART5
9 D; i1 o5 Z4 F# N5 Y; m0 k  ^DCD TIM6_IRQHandler ; TIM6
. j4 p/ m- k% m! R5 }* ~4 h2 x) YDCD TIM7_IRQHandler ; TIM7
DCD DMA2_Channel1_IRQHandler ; DMA2 Channel1
DCD DMA2_Channel2_IRQHandler ; DMA2 Channel2
& O+ c: l. M6 t( A' \DCD DMA2_Channel3_IRQHandler ; DMA2 Channel3
DCD DMA2_Channel4_5_IRQHandler ; DMA2 Channel4 & Channel5
3 R8 s2 M* Y) g+ |__Vectors_End