blocks|key|2650881|text|尝试阅读Adding+Trace+support+to+ST-Link+clones。常见的廉价ST-Link克隆必须在硬件级别进行修改，以暴露ITM跟踪所依赖的SWO引脚。(当然，您还必须连接该信号。)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2650882|我有两个不同的ST-Link克隆，它们都没有连接到PA10引脚，就像在链接的文章中一样。|2650883|entityMap|0|LINK|mutability|MUTABLE|url|https://lujji.github.io/blog/stlink-clone-trace/^0|4|12|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

Try reading <a href="https://lujji.github.io/blog/stlink-clone-trace/" rel="nofollow noreferrer">Adding Trace support to ST-Link clones</a>. Common cheap ST-Link clones must be modified at the hardware level to expose the SWO pin which ITM tracing depends upon. (Then, of course, you must also hook up that signal.)

I've got two different ST-Link clones, both of which connect nothing to the PA10 pin, like in the linked article.

blocks|key|746526|text|我知道这个问题已经很久了。我希望你找到解决办法了，但我还是想说两句，因为我也遇到过同样的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|746527|我的理解是，对于SWV功能，您需要SWO引脚连接。当您遇到此问题时，您是否能够查看异常跟踪日志或除printf重定向之外的任何SWV功能？|746528|根据这一认识，我正在修改我的硬件以支持SWO引脚以供将来使用。|746529|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I understand this question is very old. I hope you found the solution but I'd still like to put in my two cents because I came across the same problem.

My understanding is that for SWV functionality you need the SWO pin connected. When you had this problem were you able to view exception trace logs or any SWV feature other than the printf redirect?

In light of this realization I am modifying my hardware to support the SWO pin for future use.

blocks|key|4071653|text|我猜你已经做了阿托利克在这个link中说的话了？基本上，ITM需要以下内容来重定向printf()|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4071654|应用程序应将printf()输出发送到ITM通道|4071655|JTAG探测器必须支持SWV|4071656|调试器必须启用相应ITM通道的SWV跟踪|4071657|不管你的供应商是谁，我假设所有的ST-Link都应该支持printf重定向。(否则，使用ST-Link实用程序并更新您的ST+Link固件)|4071658|希望这能有所帮助。|4071659|entityMap|0|LINK|mutability|MUTABLE|url|http://blog.atollic.com/cortex-m-debugging-printf-redirection-to-a-debugger-console-using-swv/itm-part-1^0|E|4|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|6|7|Z|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|10|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|11|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|12|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|13|8|@]|9|@]|C|$]]|$1|N|3|-4|5|6|7|14|8|@]|9|@]|C|$]]]|O|$P|$5|Q|R|S|C|$T|U]]]]

I assume you have already done what Atollic says in this <a href="http://blog.atollic.com/cortex-m-debugging-printf-redirection-to-a-debugger-console-using-swv/itm-part-1" rel="nofollow">link</a>?
Basically, ITM require the following things to redirect printf()

The application should send printf() output to an ITM channel

The JTAG probe must support SWV

The debugger must have SWV tracing with the corresponding ITM channel enabled

Despite your vendor, I assume all the ST-Links should support printf redirection. (Otherwise, use ST-Link utility and update your ST Link firmware) 

Hope this helps.

blocks|key|4071756|text|我今天也面临着同样的问题。我使用的是STLink+V2+克隆，它没有SWO(SWV)引脚，我找到了two+solutions|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|4071757|当其他人回答她时，克隆板的|4071758|HW修改是hereAdding+Trace+support+to+ST-Link+clones.|ordered-list-item|4071759|4071760|使用openOCD的|4071761|Semihosting技术：|4071762|4071763|2.1在debug+configurations中，从调试探针列表中选择debugger“ST-LINK()”。|4071764|2.2在监视器启动选项卡中，向下滚动，在Run+Commands+placeholder中，键入“+arm+semihosting”，如下所示：Run+Commands。2.3单击apply，然后单击close+debug+configurations。|4071765|2.4打开项目属性。从C/C%2B%2B+Build中，打开Tool+settings。在单片机中，选择Miscellaneous.+(Miscellaneous.)，进入MCU+#en0#在其他标志上，单击Add按钮并键入"-specs=rdimon.specs+-lc+-lrdimon"，如此处所示的arguments。|4071766|2.5单击Apply，然后单击Apply并关闭。|4071767|2.6然后您需要排除syscalls.c。打开它的属性。从C/C%2B%2B+Build中，选择Setting并选中按钮Exclude+source+from+build，然后单击Apply并关闭，如Exclude+syscalls.c所示。|4071768|2.7.最后一步是在任何打印之前如果是，您应该调用initialise_monitor_handles()，，它的原型应该包括在内，如下所示，在构建并进入调试模式并点击resume之后，将在控制台上打印消息，如此处所示printing.|4071769|entityMap|0|LINK|mutability|MUTABLE|url|https://lujji.github.io/blog/stlink-clone-trace/|1|https://i.stack.imgur.com/nqKV0.png|2|https://i.stack.imgur.com/lRyJi.png|3|https://i.stack.imgur.com/8LXuh.png|4|https://i.stack.imgur.com/iRnDY.png|5|https://i.stack.imgur.com/nFW3I.png^0|S|2|1D|D|0|0|0|4|9|12|0|0|0|2|7|0|0|B|0|0|4|K|R|4|1J|1|10|8|1|0|0|9|K|C|1C|27|20|C|2|0|0|4F|45|9|3|0|0|O|0|0|39|2O|I|4|0|0|3A|31|8|5|0^^$0|@$1|2|3|4|5|6|7|1K|8|@$9|1L|A|1M|B|C]|$9|1N|A|1O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1P|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|1Q|8|@$9|1R|A|1S|B|C]]|D|@$9|1T|A|1U|1|1V]]|E|$]]|$1|K|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|1X|8|@$9|1Y|A|1Z|B|C]]|D|@]|E|$]]|$1|N|3|O|5|J|7|20|8|@$9|21|A|22|B|C]]|D|@]|E|$]]|$1|P|3|-4|5|6|7|23|8|@]|D|@]|E|$]]|$1|Q|3|R|5|6|7|24|8|@$9|25|A|26|B|C]|$9|27|A|28|B|C]|$9|29|A|2A|B|C]]|D|@$9|2B|A|2C|1|2D]]|E|$]]|$1|S|3|T|5|6|7|2E|8|@$9|2F|A|2G|B|C]|$9|2H|A|2I|B|C]|$9|2J|A|2K|B|C]]|D|@$9|2L|A|2M|1|2N]]|E|$]]|$1|U|3|V|5|6|7|2O|8|@$9|2P|A|2Q|B|C]]|D|@$9|2R|A|2S|1|2T]]|E|$]]|$1|W|3|X|5|6|7|2U|8|@$9|2V|A|2W|B|C]]|D|@]|E|$]]|$1|Y|3|Z|5|6|7|2X|8|@$9|2Y|A|2Z|B|C]]|D|@$9|30|A|31|1|32]]|E|$]]|$1|10|3|11|5|6|7|33|8|@$9|34|A|35|B|C]]|D|@$9|36|A|37|1|38]]|E|$]]|$1|12|3|-4|5|6|7|39|8|@]|D|@]|E|$]]]|13|$14|$5|15|16|17|E|$18|19]]|1A|$5|15|16|17|E|$18|1B]]|1C|$5|15|16|17|E|$18|1D]]|1E|$5|15|16|17|E|$18|1F]]|1G|$5|15|16|17|E|$18|1H]]|1I|$5|15|16|17|E|$18|1J]]]]

I have faced the same problem today. I'm using the STLink V2 clone which doesn't have the SWO(SWV) pin, and I found two solutions:
<ol>
<li>HW modification for the clone board as other people answered her which is here<a href="https://lujji.github.io/blog/stlink-clone-trace/" rel="nofollow noreferrer">Adding Trace support to ST-Link clones</a>.
</li>
<li>Semihosting technique using openOCD:
2.1 in debug configurations select &quot;ST-LINK (OpenOCD)&quot; from Debug probe list as shown here <a href="https://i.stack.imgur.com/nqKV0.png" rel="nofollow noreferrer">debugger</a>.
2.2 in startup tab, scroll down and in Run Commands placeholder, type &quot;monitor arm semihosting enable&quot; as shown here <a href="https://i.stack.imgur.com/lRyJi.png" rel="nofollow noreferrer">Run Commands</a>.
2.3 click on apply and then close debug configurations.
2.4 open project properties. From C/C++ Build, open Tool settings. From MCU GCC Linker, select Miscellaneous. on Other flags, click on Add button and type &quot;-specs=rdimon.specs -lc -lrdimon&quot; as shown here <a href="https://i.stack.imgur.com/8LXuh.png" rel="nofollow noreferrer">arguments</a>.
2.5 click Apply, then Apply and Close.
2.6 then you need to exclude syscalls.c. open it's properties. from C/C++ Build, select Settings and check button Exclude source from build, then click Apply and Close as shown here <a href="https://i.stack.imgur.com/iRnDY.png" rel="nofollow noreferrer">Exclude syscalls.c</a>.
2.7 The finall step is before any printf, you should call initialise_monitor_handles(), and it's prototype should be included as shown below and after building and entering debug mode and hit resume, the message is printed on the console itself as shown here <a href="https://i.stack.imgur.com/nFW3I.png" rel="nofollow noreferrer">printing</a>.
</li>
</ol>

I bought a cheap "st-link v2 emulator programmer" and an STM32f013C8T6 of Ebay. Using Atollic on Windows 8 and the SWD interface of the MCU, I am able to upload and run code, set breakpoints and watch variables but I can´t use printf over ITM or SWV Trace.

I have also tried using a genuine ST-LINK v2 of a Nucleo stm32l152re board with the same results.

The connections between ST-LINK and MCU are as follows:

ST-LINK - MCU:

SWDIO - SWDIO, 
GND - GND, 
SWCLK - SWCLK, 
3.3V - 3.3V

Unused pins on the ebay ST-LINK:
RST, SWIM

Unused pins on the genuine ST-LINK:
NRST, SWO

Any advice in this matter would be appreciated and I would be happy to provide more information if needed.

No SWV or ITM with st-link v2 emulator programmer and stm32f103c8t6

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我买了一个便宜的"st-link v2模拟器编程器“和一个易趣的STM32f013C8T6。在Windows8和MCU的SWD接口上使用Atollic，我可以上传和运行代码、设置断点和监视变量，但不能在ITM或SWV Trace上使用printf。我还尝试使用Nucleo stm32l152re板的正版ST-LINK v2，结果相同。ST-LINK与MCU之间的连接如下：ST-LINK - MCU

问使用st-link v2仿真器编程器和stm32f103c8t6时，没有SWV或ITM
EN

回答 4

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