Arm Development Studio forum Keil ITM_SendChar() printf() issue

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Keil ITM_SendChar() printf() issue

Milgo Milgo over 12 years ago

Martin Günther over 12 years ago

Note: This was originally posted on 30th April 2013 at http://forums.arm.com

Hello,

it works for me.

I used:
- MCBSTM32 board which is populated with a STM32F103RB and a STM32F4-Discovery board as "ST-Link Debugger".
- STM32_SWO.ini file from Blinky_ULp example to enable asynchronous trace.
- MDK-ARM V4.71 for debugging.

Did you configure the Core Clock under "Cortex-M Target Driver Setup - Trace" to the core clock at which your system is running?

Best Regards, Martin
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Bob Boys over 12 years ago

Note: This was originally posted on 1st May 2013 at http://forums.arm.com

Hello

Martin is correct - the number one reason for the Serial Wire Viewer (SWV) to not work is the Core Clock: is not set correctly.

See http://www.keil.com/appnotes/files/apnt_230.pdf

There are instructions in this lab for getting the SWV to work.

Try 168 MHz with this board.

Bob
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