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ucOS_II移植:Stm32启动代码分析

2011-12-15 13:55:57 14837

0 本帖最后由 eehome 于 2013-1-5 10:03 编辑用的编译工具是keil，在用keil建立STM32工程时，一般会产生一个启动文件，STM32F10x.s,在st提供的库函数里，用cortexm3_macro.s和stm32f10x_vector.s来代替这个文件。不过内容都大同小异。我在csdn上搜到了一个在stm32上移植好的ucos,打算在这个代码的基础上，添加注释，先学别人的，然后再自己移植。我获得的这份例程，使用了startup_stm32f10x_md.s作为启动文件，其中，删去了部分采用扩展SRAM的代码。其文件内容为 startup_stm32f10x_md.s ;****** (C) COPYRIGHT2010 STMicroelectronics ****************** ;* File Name : startup_stm32f10x_md.s ;* Author : MCD Application Team ;* Version : V3.3.0 ;* Date : 04/16/2010 ;* Description:STM32F10x Medium Density Devices vector table for RVMDK ;* toolchain. ;* This module performs: ;* - Set the initial SP ;* - Set the initial PC ==Reset_Handler ;* - Set the vector table entries withthe exceptions ISR address ;* - Configure the clocksystem ;* - Branches to __main in the C library(which eventually ;* calls main()). ;* After Reset the CortexM3 processoris in Thread mode, ;* priority is Privileged, and theStack is set to Main. ;* <<< UseConfiguration Wizard in Context Menu >>> ;********************************************************************* ; THE PRESENT FIRMWAREWHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS ; WITH CODINGINFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. ; AS A RESULT, STMICROELECTRONICSSHALL NOT BE HELD LIABLE FOR ANY DIRECT, ; INDIRECT ORCONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE ; CONTENT OF SUCHFIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING ; INFORMATION CONTAINEDHEREIN IN CONNECTION WITH THEIR PRODUCTS. ;****************************************************************** ; Amount of memory (inbytes) allocated for Stack ; Tailor this value toyour application needs ; StackConfiguration ; Stack Size (in Bytes) <0x0-0xFFFFFFFF:8> ; Stack_Size EQU 0x00000400 ;定义堆栈大小 AREA STACK, NOINIT, READWRITE, ALIGN=3 Stack_Mem SPACE Stack_Size __initial_sp ;此处定义STACK段的程序，该段入口为__initial_sp,这是值在后面放在了0x00000000的位置处，作为MSP的初始值，一般程序 ;编译的时候，由编译器赋值。我的编译器将其赋为0x20001138,如果用到了外接的SRAM,需要用 ;__initial_sp EQU0x20000000 + Stack_Size 来定义 ; HeapConfiguration ; Heap Size (in Bytes) <0x0-0xFFFFFFFF:8> ; Heap_Size EQU 0x00000200 AREA HEAP, NOINIT, READWRITE, ALIGN=3 __heap_base Heap_Mem SPACE Heap_Size __heap_limit PRESERVE8 THUMB ; Vector Table Mapped toAddress 0 at Reset ;下面是地址0x00000000 开始处的中断向量表，此段名RESET不可更改，是编译器里默认的起始段 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 MemManage_Handler ; MPU Fault Handler DCD BusFault_Handler ; Bus Fault Handler DCD UsageFault_Handler ; Usage Fault Handler DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD SVC_Handler ; SVCall Handler DCD DebugMon_Handler ; Debug Monitor Handler DCD 0 ; Reserved ;DCD PendSV_Handler ; PendSV Handler DCD OSPendSV ;PendSV Handler(for uCOS-II) DCD SysTick_Handler ; SysTick Handler ; External Interrupts DCD WWDG_IRQHandler ; Window Watchdog DCD PVD_IRQHandler ; PVD through EXTI Line detect DCD TAMPER_IRQHandler ; Tamper DCD RTC_IRQHandler ; RTC DCD FLASH_IRQHandler ; Flash DCD RCC_IRQHandler ; RCC DCD EXTI0_IRQHandler ; EXTI Line 0 DCD EXTI1_IRQHandler ; EXTI Line 1 DCD 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 DCD DMA1_Channel3_IRQHandler ; DMA1 Channel 3 DCD DMA1_Channel4_IRQHandler ; DMA1 Channel 4 DCD DMA1_Channel5_IRQHandler ; DMA1 Channel 5 DCD DMA1_Channel6_IRQHandler ; DMA1 Channel 6 DCD DMA1_Channel7_IRQHandler ; DMA1 Channel 7 DCD ADC1_2_IRQHandler ; ADC1_2 DCD USB_HP_CAN1_TX_IRQHandler; USB HighPriority or CAN1 TX DCD USB_LP_CAN1_RX0_IRQHandler;USB Low Priority or CAN1 RX0 DCD CAN1_RX1_IRQHandler ; CAN1 RX1 DCD CAN1_SCE_IRQHandler ; CAN1 SCE DCD EXTI9_5_IRQHandler ; EXTI Line 9..5 DCD TIM1_BRK_IRQHandler ; TIM1 Break DCD TIM1_UP_IRQHandler ; TIM1 Update DCD TIM1_TRG_COM_IRQHandler ; TIM1 Trigger and Commutation DCD TIM1_CC_IRQHandler ; TIM1 Capture Compare DCD TIM2_IRQHandler ; TIM2 DCD TIM3_IRQHandler ; TIM3 DCD TIM4_IRQHandler ; TIM4 DCD I2C1_EV_IRQHandler ; I2C1 Event DCD I2C1_ER_IRQHandler ; I2C1 Error DCD I2C2_EV_IRQHandler ; I2C2 Event DCD I2C2_ER_IRQHandler ; I2C2 Error DCD SPI1_IRQHandler ; SPI1 DCD SPI2_IRQHandler ; SPI2 DCD USART1_IRQHandler ; USART1 DCD USART2_IRQHandler ; USART2 DCD USART3_IRQHandler ; USART3 DCD EXTI15_10_IRQHandler ; EXTI Line 15..10 DCD RTCAlarm_IRQHandler ; RTC Alarm through EXTI Line DCD USBWakeUp_IRQHandler ; USB Wakeup from suspend __Vectors_End __Vectors_Size EQU __Vectors_End - __Vectors AREA \|.text\|, CODE, READONLY ; Reset handler Reset_Handler PROC ;此处删除了原有的关于扩展SRAM的代码，看来这个是默认内部SRAM的 EXPORT Reset_Handler [WEAK] IMPORT __main IMPORT SystemInit ;是初始化RCC外设等的函数，原来的程序是在main起来之后初始化的 LDR R0, =SystemInit ;这里多了一个SystemInit函数的调用，原来的是直接跳到__main BLX R0 LDR R0, =__main BX R0 ENDP ; Dummy ExceptionHandlers (infinite loops which can be modified) ;这一段的函数定义和声明很是麻烦，其实，只要在DCD前面，用命令IMPORT 来声明一下也是可以的 NMI_Handler PROC EXPORT NMI_Handler [WEAK] B . ENDP HardFault_Handler PROC EXPORT HardFault_Handler [WEAK] B . ENDP MemManage_Handler PROC EXPORT MemManage_Handler [WEAK] B . ENDP BusFault_Handler PROC EXPORT BusFault_Handler [WEAK] B . ENDP UsageFault_Handler PROC EXPORT UsageFault_Handler [WEAK] B . ENDP SVC_Handler PROC EXPORT SVC_Handler [WEAK] B . ENDP DebugMon_Handler PROC EXPORT DebugMon_Handler [WEAK] B . ENDP ;PendSV_Handler PROC ; EXPORT PendSV_Handler [WEAK] ; (for uCOS-II) OSPendSV PROC EXPORT OSPendSV [WEAK] B . ENDP SysTick_Handler PROC EXPORT SysTick_Handler [WEAK] B . ENDP Default_Handler PROC EXPORT WWDG_IRQHandler [WEAK] EXPORT PVD_IRQHandler [WEAK] EXPORT TAMPER_IRQHandler [WEAK] EXPORT RTC_IRQHandler [WEAK] EXPORT FLASH_IRQHandler [WEAK] EXPORT RCC_IRQHandler [WEAK] EXPORT EXTI0_IRQHandler [WEAK] EXPORT EXTI1_IRQHandler [WEAK] EXPORT EXTI2_IRQHandler [WEAK] EXPORT EXTI3_IRQHandler [WEAK] EXPORT EXTI4_IRQHandler [WEAK] EXPORT DMA1_Channel1_IRQHandler [WEAK] EXPORT DMA1_Channel2_IRQHandler [WEAK] EXPORT DMA1_Channel3_IRQHandler [WEAK] EXPORT DMA1_Channel4_IRQHandler [WEAK] EXPORT DMA1_Channel5_IRQHandler [WEAK] EXPORT DMA1_Channel6_IRQHandler [WEAK] EXPORT DMA1_Channel7_IRQHandler [WEAK] EXPORT ADC1_2_IRQHandler [WEAK] EXPORT USB_HP_CAN1_TX_IRQHandler [WEAK] EXPORT USB_LP_CAN1_RX0_IRQHandler [WEAK] EXPORT CAN1_RX1_IRQHandler [WEAK] EXPORT CAN1_SCE_IRQHandler [WEAK] EXPORT EXTI9_5_IRQHandler [WEAK] EXPORT TIM1_BRK_IRQHandler [WEAK] EXPORT TIM1_UP_IRQHandler [WEAK] EXPORT TIM1_TRG_COM_IRQHandler [WEAK] EXPORT TIM1_CC_IRQHandler [WEAK] EXPORT TIM2_IRQHandler [WEAK] EXPORT TIM3_IRQHandler [WEAK] EXPORT TIM4_IRQHandler [WEAK] EXPORT I2C1_EV_IRQHandler [WEAK] EXPORT I2C1_ER_IRQHandler [WEAK] EXPORT I2C2_EV_IRQHandler [WEAK] EXPORT I2C2_ER_IRQHandler [WEAK] EXPORT SPI1_IRQHandler [WEAK] EXPORT SPI2_IRQHandler [WEAK] EXPORT USART1_IRQHandler [WEAK] EXPORT USART2_IRQHandler [WEAK] EXPORT USART3_IRQHandler [WEAK] EXPORT EXTI15_10_IRQHandler [WEAK] EXPORT RTCAlarm_IRQHandler [WEAK] EXPORT USBWakeUp_IRQHandler [WEAK] WWDG_IRQHandler PVD_IRQHandler TAMPER_IRQHandler RTC_IRQHandler FLASH_IRQHandler RCC_IRQHandler EXTI0_IRQHandler EXTI1_IRQHandler EXTI2_IRQHandler EXTI3_IRQHandler EXTI4_IRQHandler DMA1_Channel1_IRQHandler DMA1_Channel2_IRQHandler DMA1_Channel3_IRQHandler DMA1_Channel4_IRQHandler DMA1_Channel5_IRQHandler DMA1_Channel6_IRQHandler DMA1_Channel7_IRQHandler ADC1_2_IRQHandler USB_HP_CAN1_TX_IRQHandler USB_LP_CAN1_RX0_IRQHandler CAN1_RX1_IRQHandler CAN1_SCE_IRQHandler EXTI9_5_IRQHandler TIM1_BRK_IRQHandler TIM1_UP_IRQHandler TIM1_TRG_COM_IRQHandler TIM1_CC_IRQHandler TIM2_IRQHandler TIM3_IRQHandler TIM4_IRQHandler I2C1_EV_IRQHandler I2C1_ER_IRQHandler I2C2_EV_IRQHandler I2C2_ER_IRQHandler SPI1_IRQHandler SPI2_IRQHandler USART1_IRQHandler USART2_IRQHandler USART3_IRQHandler EXTI15_10_IRQHandler RTCAlarm_IRQHandler USBWakeUp_IRQHandler B . ENDP ALIGN ;*************************************************************************** ; User Stack and Heapinitialization ;*************************************************************************** IF :DEF:__MICROLIB ;这里是定义了microlib的情况，一般用在单片机上，都定义这个库 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 2010 STMicroelectronics *END OF FILE*** startup_stm32f10x_md.s结束 2
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胡秋阳 · 2011-12-15 13:56:24 沙发在上面有一段函数声明，感觉那些声明很麻烦，其实，如果不用这种方式，在DCD的命令前面用 IMPORT声明会简洁很多。当然，这里面具体的差异还有些不太明白，希望懂的朋友解释一下。下面是stm32f10x_vector.s里面的import方式 Stm32f10x_vector.s ; If you need to useexternal SRAM mounted on STM3210E-EVAL board as data memory, ; change the followingdefine value to '1' (or choose ENABLE in Configuration Wizard window) ;// External SRAM Configuration <0=> DISABLE <1=> ENABLE DATA_IN_ExtSRAM EQU 0 ; Amount of memory (inbytes) allocated for Stack ; Tailor this value toyour application needs ;// StackConfiguration ;// Stack Size (in Bytes)<0x0-0xFFFFFFFF:8> ;// Stack_Size EQU 0x00000400 AREA STACK, NOINIT, READWRITE, ALIGN=3 Stack_Mem SPACE Stack_Size __initial_sp ; If you need to useexternal SRAM mounted on STM3210E-EVAL board as data memory ; and internal SRAM forStack, uncomment the following line and comment the line above ;__initial_sp EQU 0x20000000 + Stack_Size ; "UseMicroLIB" must be checked in ;the Project->Options->Target window ; Amount of memory (inbytes) allocated for Heap ; Tailor this value toyour application needs ;// HeapConfiguration ;// Heap Size (in Bytes) <0x0-0xFFFFFFFF:8> ;// Heap_Size EQU 0x00000C60 AREA HEAP, NOINIT, READWRITE, ALIGN=3 __heap_base Heap_Mem SPACE Heap_Size __heap_limit THUMB PRESERVE8 ; Import exceptions handlers IMPORT NMIException IMPORT HardFaultException IMPORT MemManageException IMPORT BusFaultException IMPORT UsageFaultException IMPORT SVCHandler IMPORT DebugMonitor IMPORT PendSVC IMPORT SysTickHandler IMPORT WWDG_IRQHandler IMPORT PVD_IRQHandler IMPORT TAMPER_IRQHandler IMPORT RTC_IRQHandler IMPORT FLASH_IRQHandler IMPORT RCC_IRQHandler IMPORT EXTI0_IRQHandler IMPORT EXTI1_IRQHandler IMPORT EXTI2_IRQHandler IMPORT EXTI3_IRQHandler IMPORT EXTI4_IRQHandler IMPORT DMA1_Channel1_IRQHandler IMPORT DMA1_Channel2_IRQHandler IMPORT DMA1_Channel3_IRQHandler IMPORT DMA1_Channel4_IRQHandler IMPORT DMA1_Channel5_IRQHandler IMPORT DMA1_Channel6_IRQHandler IMPORT DMA1_Channel7_IRQHandler IMPORT ADC1_2_IRQHandler IMPORT USB_HP_CAN_TX_IRQHandler IMPORT USB_LP_CAN_RX0_IRQHandler IMPORT CAN_RX1_IRQHandler IMPORT CAN_SCE_IRQHandler IMPORT EXTI9_5_IRQHandler IMPORT TIM1_BRK_IRQHandler IMPORT TIM1_UP_IRQHandler IMPORT TIM1_TRG_COM_IRQHandler IMPORT TIM1_CC_IRQHandler IMPORT TIM2_IRQHandler IMPORT TIM3_IRQHandler IMPORT TIM4_IRQHandler IMPORT I2C1_EV_IRQHandler IMPORT I2C1_ER_IRQHandler IMPORT I2C2_EV_IRQHandler IMPORT I2C2_ER_IRQHandler IMPORT SPI1_IRQHandler IMPORT SPI2_IRQHandler IMPORT USART1_IRQHandler IMPORT USART2_IRQHandler IMPORT USART3_IRQHandler IMPORT EXTI15_10_IRQHandler IMPORT RTCAlarm_IRQHandler IMPORT USBWakeUp_IRQHandler IMPORT TIM8_BRK_IRQHandler IMPORT TIM8_UP_IRQHandler IMPORT TIM8_TRG_COM_IRQHandler IMPORT TIM8_CC_IRQHandler IMPORT ADC3_IRQHandler IMPORT FSMC_IRQHandler IMPORT SDIO_IRQHandler IMPORT TIM5_IRQHandler IMPORT SPI3_IRQHandler IMPORT UART4_IRQHandler IMPORT UART5_IRQHandler IMPORT TIM6_IRQHandler IMPORT TIM7_IRQHandler IMPORT DMA2_Channel1_IRQHandler IMPORT DMA2_Channel2_IRQHandler IMPORT DMA2_Channel3_IRQHandler IMPORT DMA2_Channel4_5_IRQHandler ;***************************************************************************** ; Fill-up the VectorTable entries with the exceptions ISR address ;*************************************************************************** AREA RESET, DATA, READONLY EXPORT __Vectors __Vectors DCD __initial_sp ; Top ofStack DCD Reset_Handler DCD NMIException DCD HardFaultException DCD MemManageException DCD BusFaultException DCD UsageFaultException DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD SVCHandler DCD DebugMonitor DCD 0 ; Reserved DCD PendSVC DCD SysTickHandler DCD WWDG_IRQHandler DCD PVD_IRQHandler DCD TAMPER_IRQHandler DCD RTC_IRQHandler DCD FLASH_IRQHandler DCD RCC_IRQHandler DCD EXTI0_IRQHandler DCD EXTI1_IRQHandler DCD EXTI2_IRQHandler DCD EXTI3_IRQHandler DCD EXTI4_IRQHandler DCD DMA1_Channel1_IRQHandler DCD DMA1_Channel2_IRQHandler DCD DMA1_Channel3_IRQHandler DCD DMA1_Channel4_IRQHandler DCD DMA1_Channel5_IRQHandler DCD DMA1_Channel6_IRQHandler DCD DMA1_Channel7_IRQHandler DCD ADC1_2_IRQHandler DCD USB_HP_CAN_TX_IRQHandler DCD USB_LP_CAN_RX0_IRQHandler DCD CAN_RX1_IRQHandler DCD CAN_SCE_IRQHandler DCD EXTI9_5_IRQHandler DCD TIM1_BRK_IRQHandler DCD TIM1_UP_IRQHandler DCD TIM1_TRG_COM_IRQHandler DCD TIM1_CC_IRQHandler DCD TIM2_IRQHandler DCD TIM3_IRQHandler DCD TIM4_IRQHandler DCD I2C1_EV_IRQHandler DCD I2C1_ER_IRQHandler DCD I2C2_EV_IRQHandler DCD I2C2_ER_IRQHandler DCD SPI1_IRQHandler DCD SPI2_IRQHandler DCD USART1_IRQHandler DCD USART2_IRQHandler DCD USART3_IRQHandler DCD EXTI15_10_IRQHandler DCD RTCAlarm_IRQHandler DCD USBWakeUp_IRQHandler DCD TIM8_BRK_IRQHandler DCD TIM8_UP_IRQHandler DCD TIM8_TRG_COM_IRQHandler DCD TIM8_CC_IRQHandler DCD ADC3_IRQHandler DCD FSMC_IRQHandler DCD SDIO_IRQHandler DCD TIM5_IRQHandler DCD SPI3_IRQHandler DCD UART4_IRQHandler DCD UART5_IRQHandler DCD TIM6_IRQHandler DCD TIM7_IRQHandler DCD DMA2_Channel1_IRQHandler DCD DMA2_Channel2_IRQHandler DCD DMA2_Channel3_IRQHandler DCD DMA2_Channel4_5_IRQHandler AREA \|.text\|, CODE, READONLY ; Reset handler routine Reset_Handler PROC EXPORT Reset_Handler IMPORT __main LDR R0, =__main BX R0 ENDP ALIGN ;*************************************************************************** ; User Stack and Heapinitialization ;*************************************************************************** IF :DEF:__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 2008 STMicroelectronics *END OF FILE* Stm32f10x_vector.s结束 sp�"u:�� EXPORT DebugMon_Handler [WEAK] B . ENDP ;PendSV_Handler PROC ; EXPORT PendSV_Handler [WEAK] ; (for uCOS-II) OSPendSV PROC EXPORT OSPendSV [WEAK] B . ENDP SysTick_Handler PROC EXPORT SysTick_Handler [WEAK] B . ENDP Default_Handler PROC EXPORT WWDG_IRQHandler [WEAK] EXPORT PVD_IRQHandler [WEAK] EXPORT TAMPER_IRQHandler [WEAK] EXPORT RTC_IRQHandler [WEAK] EXPORT FLASH_IRQHandler [WEAK] EXPORT RCC_IRQHandler [WEAK] EXPORT EXTI0_IRQHandler [WEAK] EXPORT EXTI1_IRQHandler [WEAK] EXPORT EXTI2_IRQHandler [WEAK] EXPORT EXTI3_IRQHandler [WEAK] EXPORT EXTI4_IRQHandler [WEAK] EXPORT DMA1_Channel1_IRQHandler [WEAK] EXPORT DMA1_Channel2_IRQHandler [WEAK] EXPORT DMA1_Channel3_IRQHandler [WEAK] EXPORT DMA1_Channel4_IRQHandler [WEAK] EXPORT DMA1_Channel5_IRQHandler [WEAK] EXPORT DMA1_Channel6_IRQHandler [WEAK] EXPORT DMA1_Channel7_IRQHandler [WEAK] EXPORT ADC1_2_IRQHandler [WEAK] EXPORT USB_HP_CAN1_TX_IRQHandler [WEAK] EXPORT USB_LP_CAN1_RX0_IRQHandler [WEAK] EXPORT CAN1_RX1_IRQHandler [WEAK] EXPORT CAN1_SCE_IRQHandler [WEAK] EXPORT EXTI9_5_IRQHandler [WEAK] EXPORT TIM1_BRK_IRQHandler [WEAK] EXPORT TIM1_UP_IRQHandler [WEAK] EXPORT TIM1_TRG_COM_IRQHandler [WEAK] EXPORT TIM1_CC_IRQHandler [WEAK] EXPORT TIM2_IRQHandler [WEAK] EXPORT TIM3_IRQHandler [WEAK] EXPORT TIM4_IRQHandler [WEAK] EXPORT I2C1_EV_IRQHandler [WEAK] EXPORT I2C1_ER_IRQHandler [WEAK] EXPORT I2C2_EV_IRQHandler [WEAK] EXPORT I2C2_ER_IRQHandler [WEAK] EXPORT SPI1_IRQHandler [WEAK] EXPORT SPI2_IRQHandler [WEAK] EXPORT USART1_IRQHandler [WEAK] EXPORT USART2_IRQHandler [WEAK] EXPORT USART3_IRQHandler [WEAK] EXPORT EXTI15_10_IRQHandler [WEAK] EXPORT RTCAlarm_IRQHandler [WEAK] EXPORT USBWakeUp_IRQHandler [WEAK] WWDG_IRQHandler PVD_IRQHandler TAMPER_IRQHandler RTC_IRQHandler FLASH_IRQHandler RCC_IRQHandler EXTI0_IRQHandler EXTI1_IRQHandler EXTI2_IRQHandler EXTI3_IRQHandler EXTI4_IRQHandler DMA1_Channel1_IRQHandler DMA1_Channel2_IRQHandler DMA1_Channel3_IRQHandler DMA1_Channel4_IRQHandler DMA1_Channel5_IRQHandler DMA1_Channel6_IRQHandler DMA1_Channel7_IRQHandler ADC1_2_IRQHandler USB_HP_CAN1_TX_IRQHandler USB_LP_CAN1_RX0_IRQHandler CAN1_RX1_IRQHandler CAN1_SCE_IRQHandler EXTI9_5_IRQHandler TIM1_BRK_IRQHandler TIM1_UP_IRQHandler TIM1_TRG_COM_IRQHandler TIM1_CC_IRQHandler TIM2_IRQHandler TIM3_IRQHandler TIM4_IRQHandler I2C1_EV_IRQHandler I2C1_ER_IRQHandler I2C2_EV_IRQHandler I2C2_ER_IRQHandler SPI1_IRQHandler SPI2_IRQHandler USART1_IRQHandler USART2_IRQHandler USART3_IRQHandler EXTI15_10_IRQHandler RTCAlarm_IRQHandler USBWakeUp_IRQHandler B . ENDP ALIGN ;*************************************************************************** ; User Stack and Heapinitialization ;*************************************************************************** IF :DEF:__MICROLIB ;这里是定义了microlib的情况，一般用在单片机上，都定义这个库 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 2010 STMicroelectronics *END OF FILE*** startup_stm32f10x_md.s结束

赞 1 回复举报困魔文学 2014-3-30 09:16 qiangmang.com贵州茅台酒赞回复举报

胡秋阳 · 2011-12-15 14:03:48 板凳上面的两个文件，个人比较喜欢Stm32f10x_vector.s这种方式，代码比较简洁。当然，在使用Stm32f10x_vector.s这个文件时，应用程序的main（）里面要有stm32单片机的外设初始化步骤。而使用startup_stm32f10x_md.s，需要将初始化外设的步骤放在一个单独的函数SystemInit （）里面。具体采用哪种方式，看个人习惯了。还有一点需要补充的是，在跳转语句： LDR R0, =__main BX R0 ENDP __MAIN并不是你的应用程序中写的main（），而是编译器产生的几行代码，通过keil的模拟，定位到了如下几个地方：上述的几个代码执行完成之后，才跳转到用户编写的main（）里面。上面的这些代码，从其名称来看，应该是初始化堆栈，初始化零代码区的功能。不过这个与我们的目标关系不大，暂且不去深究。

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Liang · 2012-1-29 21:30:49 4^# 正好要学！

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fily · 2012-1-31 14:50:02 5^# 正在学呢

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xfortune · 2012-2-2 20:06:26 6^# 其实云里雾里。不懂。。。

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xfortune · 2012-2-2 20:07:04 7^# 我还需要学习。希望多指导。

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801524 · 2012-10-11 18:24:50 8^# {:14:}{:14:}{:14:}{:14:}

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654757 · 2012-11-22 14:35:06 9^# 库啊，

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et猿人 · 2012-11-30 09:36:02 10^# 学习了，希望楼主能在深入一点！

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危辉 · 2013-1-30 12:16:48 11^# 原来学过，现在看的是半懂半不懂啊，头大！！

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Matlab论坛

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