5 ST_LINK调试问题

发布于 2023-10-14 19:27:05 浏览：703 订阅该版

第一次接触RTOS系统，也是第一次接触ST的MCU。我的开发环境为rtthread studio,在用ST_LINK调试STM32F407的时候，在用开发环境建立的默认工程，编译下载到芯片调试后，有一半几率进不到MAIN函数处.
进不到MAIN函数的提示信息如下。

```
File download complete
Time elapsed during download operation: 00:00:02.300
 ------ Switching context ----- 
COM frequency = 4000 kHz
Target connection mode: Default
Reading ROM table for AP 0 @0xe00fffd0
Hardware watchpoint supported by the target 
ST-LINK Firmware version : V2J43S7
Device ID: 0x413
PC: 0x800bb5c
ST-LINK detects target voltage = 3.14 V
ST-LINK device status: HALT_MODE
GDB session, device event: 6
Stm32Device, pollAndNotify running...
Enter STM32_SystemReset() function 
Enter STM32_InitAfterReset() function 
NVIC_DFSR_REG = 0x00000008
NVIC_CFGFSR_REG = 0x00000000
GDB session, device event: 3
GDB session, device event: 1
GDB session, device event: 0
NVIC_DFSR_REG = 0x00000002 
CM4 Failed to read all registers
Failed to read registers from target
```

另外，在调试过程中，单步或者断点调试的时候，也会出现

```
CM4 Failed to read all registers
Failed to read registers from target
```
暂停studio无反应，终止会报interrupt failed 弹窗