STM32：STLink 不再通过 SWD 连接

Posted 2023-02-19

【中文标题】STM32：STLink 不再通过 SWD 连接

【英文标题】：STM32: STLink won't connect through SWD any longer

【发布时间】：2020-07-09 19:41:36

【问题描述】：

第一次刷机正常，后续刷机失败

初始化 ST-LINK 设备时出错。原因：找不到设备 目标。

在 STM32H745 NUCLEO 板上，我错误地启用了 DEBUG 接口和 SWO 引脚。有没有办法硬重置这个板？

【参考方案1】：

“重置时闪烁”技巧不起作用。也就是说，在 STM32_Programmer 通过 ST-Link 执行其操作之前，按住复位按钮并立即释放它。一些 RTFM-ing 有时会有所帮助：

If a deadlock is faced due to a mismatch between the HW
board setting and the FW setting (LDO/SMPS), the user can
recover the board by doing the following:
- Power off the board
- Connect CN11 ‘BT0’ pin (BOOT0) to VDD using a wire
- This changes the BOOT0 pin to 1 instead of 0 and thus the
device boot address is changed to boot address 1 making the
bootloader starting in System memory, instead of starting the
FW in the user Flash (FW that is setting a wrong LDO/SMPS
configuration)
- Power on the board and connect using
STM32CubeProgrammer
- Erase the user Flash
- Power off the board and remove the wire between BOOT0
and VDD
- The board is now recovered and can proceed normally.

现在我要弄清楚为什么我一刷我的垃圾箱就会陷入僵局......评论了一些代码并重新构建，sill 做到了。

LE：找到了违规行：

  HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);
  ...

我的SystemClock_Config 函数都是为 LDO 电源而不是 SMPS 编写的