这个.s文件里，石油我用的那个USART2_IRQHandler的 ; Amount of memory (in bytes) allocated for Stack ; Tailor this value to your application needs ; Stack Configuration ; Stack Size (in Bytes) ; Stack_Size EQU 0x00000400 AREA STACK, NOINIT, READWRITE, ALIGN=3 Stack_Mem SPACE Stack_Size __initial_sp ; Heap Configuration ; Heap Size (in Bytes) ; Heap_Size EQU 0x00000200 AREA HEAP, NOINIT, READWRITE, ALIGN=3 __heap_base Heap_Mem SPACE Heap_Size __heap_limit PRESERVE8 THUMB ; Vector Table Mapped to Address 0 at Reset AREA RESET, DATA, READONLY EXPORT __Vectors EXPORT __Vectors_End EXPORT __Vectors_Size __Vectors DCD __initial_sp ; Top of Stack DCD Reset_Handler ; Reset Handler DCD NMI_Handler ; NMI Handler DCD HardFault_Handler ; Hard Fault Handler DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD SVC_Handler ; SVCall Handler DCD 0 ; Reserved DCD 0 ; Reserved DCD endSV_Handler ; PendSV Handler DCD SysTick_Handler ; SysTick Handler ; External Interrupts DCD WWDG_IRQHandler ; Window Watchdog DCD 0 ; Reserved DCD RTC_IRQHandler ; RTC through EXTI Line DCD FLASH_IRQHandler ; FLASH DCD RCC_IRQHandler ; RCC DCD EXTI0_1_IRQHandler ; EXTI Line 0 and 1 DCD EXTI2_3_IRQHandler ; EXTI Line 2 and 3 DCD EXTI4_15_IRQHandler ; EXTI Line 4 to 15 DCD 0 ; Reserved DCD DMA1_Channel1_IRQHandler ; DMA1 Channel 1 DCD DMA1_Channel2_3_IRQHandler ; DMA1 Channel 2 and Channel 3 DCD DMA1_Channel4_5_IRQHandler ; DMA1 Channel 4 and Channel 5 DCD ADC1_IRQHandler ; ADC1 DCD TIM1_BRK_UP_TRG_COM_IRQHandler ; TIM1 Break, Update, Trigger and Commutation DCD TIM1_CC_IRQHandler ; TIM1 Capture Compare DCD 0 ; Reserved DCD TIM3_IRQHandler ; TIM3 DCD 0 ; Reserved DCD 0 ; Reserved DCD TIM14_IRQHandler ; TIM14 DCD TIM15_IRQHandler ; TIM15 DCD TIM16_IRQHandler ; TIM16 DCD TIM17_IRQHandler ; TIM17 DCD I2C1_IRQHandler ; I2C1 DCD I2C2_IRQHandler ; I2C2 DCD SPI1_IRQHandler ; SPI1 DCD SPI2_IRQHandler ; SPI2 DCD USART1_IRQHandler ; USART1 DCD USART2_IRQHandler ; USART2 __Vectors_End __Vectors_Size EQU __Vectors_End - __Vectors AREA |.text|, CODE, READONLY ; Reset handler routine Reset_Handler PROC EXPORT Reset_Handler [WEAK] IMPORT __main IMPORT SystemInit LDR R0, =__initial_sp ; set stack pointer MSR MSP, R0 ;;Check if boot space corresponds to test memory LDR R0,=0x00000004 LDR R1, [R0] LSRS R1, R1, #24 LDR R2,=0x1F CMP R1, R2 BNE ApplicationStart ;; SYSCFG clock enable LDR R0,=0x40021018 LDR R1,=0x00000001 STR R1, [R0] ;; Set CFGR1 register with flash memory remap at address 0 LDR R0,=0x40010000 LDR R1,=0x00000000 STR R1, [R0] ApplicationStart LDR R0, =SystemInit BLX R0 LDR R0, =__main BX R0 ENDP ; Dummy Exception Handlers (infinite loops which can be modified) NMI_Handler ROC EXPORT NMI_Handler [WEAK] B . ENDP HardFault_Handler\ PROC EXPORT HardFault_Handler [WEAK] B . ENDP SVC_Handler ROC EXPORT SVC_Handler [WEAK] B . ENDP PendSV_Handler ROC EXPORT endSV_Handler [WEAK] B . ENDP SysTick_Handler PROC EXPORT SysTick_Handler [WEAK] B . ENDP Default_Handler PROC EXPORT WWDG_IRQHandler [WEAK] EXPORT RTC_IRQHandler [WEAK] EXPORT FLASH_IRQHandler [WEAK] EXPORT RCC_IRQHandler [WEAK] EXPORT EXTI0_1_IRQHandler [WEAK] EXPORT EXTI2_3_IRQHandler [WEAK] EXPORT EXTI4_15_IRQHandler [WEAK] EXPORT DMA1_Channel1_IRQHandler [WEAK] EXPORT DMA1_Channel2_3_IRQHandler [WEAK] EXPORT DMA1_Channel4_5_IRQHandler [WEAK] EXPORT ADC1_IRQHandler [WEAK] EXPORT TIM1_BRK_UP_TRG_COM_IRQHandler [WEAK] EXPORT TIM1_CC_IRQHandler [WEAK] EXPORT TIM3_IRQHandler [WEAK] EXPORT TIM14_IRQHandler [WEAK] EXPORT TIM15_IRQHandler [WEAK] EXPORT TIM16_IRQHandler [WEAK] EXPORT TIM17_IRQHandler [WEAK] EXPORT I2C1_IRQHandler [WEAK] EXPORT I2C2_IRQHandler [WEAK] EXPORT SPI1_IRQHandler [WEAK] EXPORT SPI2_IRQHandler [WEAK] EXPORT USART1_IRQHandler [WEAK] EXPORT USART2_IRQHandler [WEAK] WWDG_IRQHandler RTC_IRQHandler FLASH_IRQHandler RCC_IRQHandler EXTI0_1_IRQHandler EXTI2_3_IRQHandler EXTI4_15_IRQHandler DMA1_Channel1_IRQHandler DMA1_Channel2_3_IRQHandler DMA1_Channel4_5_IRQHandler ADC1_IRQHandler TIM1_BRK_UP_TRG_COM_IRQHandler TIM1_CC_IRQHandler TIM3_IRQHandler TIM14_IRQHandler TIM15_IRQHandler TIM16_IRQHandler TIM17_IRQHandler I2C1_IRQHandler I2C2_IRQHandler SPI1_IRQHandler SPI2_IRQHandler USART1_IRQHandler USART2_IRQHandler B . ENDP ALIGN ;******************************************************************************* ; User Stack and Heap initialization ;******************************************************************************* IF EF:__MICROLIB EXPORT __initial_sp EXPORT __heap_base EXPORT __heap_limit ELSE IMPORT __use_two_region_memory EXPORT __user_initial_stackheap __user_initial_stackheap LDR R0, = Heap_Mem LDR R1, =(Stack_Mem + Stack_Size) LDR R2, = (Heap_Mem + Heap_Size) LDR R3, = Stack_Mem BX LR ALIGN ENDIF END ;************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE*****
建议题主学习下 1.外部中断 2.定时器 的使用 PS.FAQ不是Frequently Asked Questions的意思吗，怎么成了给个人解决问题的地方了
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