How to redirect Printf to SWV Console in TrueStudio?

[karthik.arunachalam]

I have followed step-by-step set up as explained in http://blog.atollic.com/cortex-m-debugging-real-time-variable-watch-using-swv/swo but it didnt work for me. I get sometimes some random characters printed on the SWV console.

My setup:

IDE: TrueStudio

Hardware: NUCLEO-F410RB

Programmer: On-board ST-Link

Let me know if you need further details.

[Tesla DeLorean]

Try testing more directly with ITM_SendChar()

Most common mode of failure is having the WRONG clock settings. ie Core and Trace settings disagree

Try using the VCP/USART to output SystemCoreClock.

Try using the SWV console in the ST-LINK Utilities.

[karthik.arunachalam]

I tried with ITM_SendChar directly, same issue still. My core clock is 96MHz, SWO clock is set to 1000kHz.

[Tesla DeLorean]

In Keil and ST-Link Utilities you'd need to set the Core clock as being 96 MHz, sorry not using Atollic.

[karthik.arunachalam]

This is how i am setting up the interface.

[Tesla DeLorean]

Double check the SWO solder bridges on the board.

Check if the debug output is visible using ST-LINK Utilities SWV Window

Try running the board from the HSI directly, at 16 MHz, without the PLL, ie don't call SystemClock_Init()

[karthik.arunachalam]

SWO solder bridge has 0 ohm installed.

i changed the clock source to internal, now its working. thanks for the suggestion. i need to find out why it is not working with external 6MHz crystal...

[Tesla DeLorean]

Probably because it's not actually running a 96 MHz.

You'd need to change the HSE_VALUE in stm32f4xx_hal_conf.h and the PLL settings in the SystemClock_Init(), and have everything coherent from hw/sw sides.

[karthik.arunachalam]

When i generate the code from CubeMX it takes care of that, right?

[Tesla DeLorean]

I suppose, but you're telling me things aren't working, what should I deduce?

Trust but Verify...

[karthik.arunachalam]

ok, i checked that

[karthik.arunachalam]

I dont understand... now it works even with the external crystal.

[karthik.arunachalam]

Please ignore my previous comment, the wasnt cleaned up so it was working with HSI not with HSE.

[MFend]

Is there such an article for STM32CubeIDE?

Now that I've migrated to STM32CubeIDE from Atollic TS, I can't get the SWV console to show printf messages.

[MFend]

The SWV ITM Data Console is working!

In Debug Mode - choose Window -> Show View -> SWV -> SWV ITM Data Console

When the SWV is opened, choose configure (wrench/screwdriver icon) and make sure that Hz rate is correct (can be set in Debug dialog when connecting with ST-Link or Segger-Link) - and check Port 0 (towards bottom of screen on far right - see attached.

[MFend]

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[Pavel A.]

@MFend​  Please see this thread. No replies yet... so ...