Is it possible to enable SWV for STM32F030?

[KG?�l]

I just installed STM32CubeIDE 1.0 version to give it a try. When I tried to enable SWV , i saw it is disabled and can not modifiable. At first, I assumed this is because of some limitation of chip, but with same hardware my other compiler ( Keil ) is perfectly using SWV and showing real time variables without stoping the code execution. Am I doing something wrong? How can I enable SWV?

[Tesla DeLorean]

For the CM0 parts you need to use the event recorder (EVT?). Keil's Bob Boys has an app note on the method if you dig a bit.​

[KG?�l]

I really didn't understand what you mean? I tried to use STM Studio to see variables real time, it is working. So, obviously this hardware ( ST-LINK and STM32F0 ) capable to send variable values via SWO. So, i just want to do same thing in STM32CubeIDE. Whenever I stop execution, IDE is showing the current values of variables, but while running not showing. This EVT, is another way to do this?

[Tesla DeLorean]

SWO is just a secondary output stream, similar to the DCC in older ARM devices, and a bit like a USART.

The debugger can already read/write into memory, although I think doing so distorts the execution speed of the target.​

[Pavel A.]

You may want to look at Segger's RTT. It uses only the minimal Cortex debugger interface and works on M0/F0.

https://www.segger.com/products/debug-probes/j-link/technology/about-real-time-transfer/

See also:

http://blog.atollic.com/the-ultimate-guide-to-etm-instruction-tracing-cortex-m-debugging

With the latest Keil uVision 5.26 I found that using the EVR without RTOS (HAL drivers only) is encumbered. Posted a workaround in this forum earlier.

Good luck.

-- pa