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Can not connect to target! Please select "Connect Under Reset" mode from Target->Settings menu and try again.
Target --> Settings --> Mode 选择 Connect Under Reset
如果使用此方法仍然无法下载,则尝试按住开发板的 Reset 键,再点击连接,再松开 Reset 键。
Cannot access Memory Error while accessing a target resource. The resource is perhaps not available or a wrong access was attempted. *** error 57: illegal address (0x08000000)
在Options for Target --> Debug --> Settings --> Debug --> Download Options对话框中取消勾选Download to Flash选项。
查看下keil版本号,至少要5.25才能使用。
http://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/stvp-stm32.html
使用 Keil 下载程序的时候,报错 ST-LINK USB communication error
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