stm32f1xxx修改启动地址利用GCC编译后程序无法进入main函数运行

发布于 2022-06-24 23:10:31 浏览：677 订阅该版

RT-Thread是从gitee上下载的最新的版本。在stm32f1xx的板子上测试，用的stm32f103-onenet-nbiot工程（其它103的工程也试过有同样的问题）自己写了一个bootloader来引导RT-Thread,将RT-Thread的启动地址设置成0x08008000后，利用GCC编译出来的hex烧写后RT-Thread无法进入到main函数。提示错误如下：
```
initialize rti_board_start:0 done

\ | /
- RT -     Thread Operating System
 / | \     4.0.5 build Jun 24 2022 07:41:46
 2006 - 2021 Copyright by rt-thread team
start scheduler: max priority 0x20
malloc size 128
thread (NULL) take sem:heap, which value is: 1
thread (NULL) releases sem:heap, which value is: 0
allocate memory at 0x200013b0, size: 140
malloc size 2048
thread (NULL) take sem:heap, which value is: 1
thread (NULL) releases sem:heap, which value is: 0
allocate memory at 0x2000143c, size: 2060
psr: 0x01000000
r00: 0x2000143c
r01: 0x00000023
r02: 0x2323232b
r03: 0x23232327
r04: 0x200013a4
r05: 0x40010800
r06: 0x7360542c
r07: 0x20001870
r08: 0xffbffffc
r09: 0xfffff7fe
r10: 0x80781bf5
r11: 0x4a7e1ed1
r12: 0xf0000000
 lr: 0x0800b9ef
 pc: 0x080089e6
hard fault on handler

bus fault:
SCB_CFSR_BFSR:0x04 IMPRECISERR 
```
启动地址的修改如下：
link.lds修改记录
```patch
diff --git a/bsp/stm32/stm32f103-onenet-nbiot/board/linker_scripts/link.lds b/bsp/stm32/stm32f103-onenet-nbiot/board/linker_scripts/link.lds
index 95185c5..c743e30 100644
--- a/bsp/stm32/stm32f103-onenet-nbiot/board/linker_scripts/link.lds
+++ b/bsp/stm32/stm32f103-onenet-nbiot/board/linker_scripts/link.lds
@@ -5,11 +5,11 @@
 /* Program Entry, set to mark it as "used" and avoid gc */
 MEMORY
 {
-    ROM (rx) : ORIGIN = 0x08000000, LENGTH = 512k /* 512KB flash */
+    ROM (rx) : ORIGIN = 0x08008000, LENGTH = 480k /* 512KB flash */
     RAM (rw) : ORIGIN = 0x20000000, LENGTH =  60k /* 60K sram */
 }
 ENTRY(Reset_Handler)
```
另一个修改点就是修改了system_stm32f1xx.c文件中的
```c
#define VECT_TAB_OFFSET  0x00008000U
```
希望路过的大神帮忙分析下是什么地方的问题。我利用keil编译的hex烧写后没有这个问题。