为什么在尝试使用openocd连接stlink-v2时出现通信故障
为什么在尝试使用openocd连接stlink-v2时出现通信故障
提问于 2021-03-09 00:31:09
我正在尝试使用stlink-v2连接到一个'stm32‘'bluepill’来编写一些代码
每当我运行openocd时，它都无法连接我的openocd.cfg文件，如下所示
source [find interface/stlink-v2.cfg]
source [find target/stm32f3x.cfg]当我运行openocd时，这是我收到的响应：
Open On-Chip Debugger 0.10.0
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
adapter speed: 1000 kHz
adapter_nsrst_delay: 100
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
none separate
srst_only separate srst_nogate srst_open_drain connect_deassert_srst
Info : Unable to match requested speed 1000 kHz, using 950 kHz
Info : Unable to match requested speed 1000 kHz, using 950 kHz
Info : clock speed 950 kHz
Info : STLINK v2 JTAG v35 API v2 SWIM v7 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 3.166623
Error: jtag status contains invalid mode value - communication failure
Polling target stm32f3x.cpu failed, trying to reexamine
Examination failed, GDB will be halted. Polling again in 100ms
Info : Previous state query failed, trying to reconnect
Error: jtag status contains invalid mode value - communication failure
Polling target stm32f3x.cpu failed, trying to reexamine
Examination failed, GDB will be halted. Polling again in 300ms
Info : Previous state query failed, trying to reconnect
Error: jtag status contains invalid mode value - communication failure
Polling target stm32f3x.cpu failed, trying to reexamine
Examination failed, GDB will be halted. Polling again in 700ms
Info : Previous state query failed, trying to reconnect
Error: jtag status contains invalid mode value - communication failure
Polling target stm32f3x.cpu failed, trying to reexamine
Examination failed, GDB will be halted. Polling again in 1500ms
Info : Previous state query failed, trying to reconnect
Error: jtag status contains invalid mode value - communication failure
Polling target stm32f3x.cpu failed, trying to reexamine
Examination failed, GDB will be halted. Polling again in 3100ms
Info : Previous state query failed, trying to reconnect
Error: jtag status contains invalid mode value - communication failure
Polling target stm32f3x.cpu failed, trying to reexamine
Examination failed, GDB will be halted. Polling again in 6300ms
^C我以前写了一些代码到bluepill上的stm32f103，当我连接到我的PC时，代码就会运行(它会导致pc13上的led闪烁)
自从上次运行良好以来，我没有修改过openocd.cfg文件
回答 1
Stack Overflow用户
发布于 2021-06-21 09:34:17
在OpenOCD尝试连接时，按住重置按钮。
我在我的STM32F3DISCOVERY主板上得到了完全相同的错误。
这样做可以让我再次建立联系。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/66533547
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