Error: Flash Download failed - “Cortex-M3“

根据引用\[1\]和引用\[2\]的描述，当使用KEIL5和ST-LINKV2烧录程序进入STM32F103c8t6时，可能会出现"Error: Flash Download failed - Cortex-M3"错误。首先，需要排除硬件连接问题和软件编译错误。如果硬件连接正常且编译没有错误，那么可能是由于硬件STM32芯片受到脉冲电平干扰而被锁定。可以尝试使用SEGGER - J-Link V7.66d中的J-Link STM32 Unlock V7.66d工具来解锁芯片。打开J-Link STM32 Unlock V7.66d，选择对应系列的芯片进行解锁。这可能有助于解决"Error: Flash Download failed - Cortex-M3"错误。另外，根据引用\[3\]的描述，还可以尝试点击魔术棒，选择"C/C++"，将"STM32F10X_HD,USE_STDPERIPH_DRIVER"改为"STM32F10X_MD,USE_STDPERIPH_DRIVER"，然后点击"ok"。这些步骤可能有助于解决该错误。
#### 引用[.reference_title]
- *1* *3* [Error: Flash Download failed - “Cortex-M3](https://blog.csdn.net/qq_44619221/article/details/124051529)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* [解决stm32芯片锁死 出现Error:Flash Download Failed-“Cortex-M3](https://blog.csdn.net/qq_35216918/article/details/129333251)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
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