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SWO is supported on the STM32H743I-EVAL.


In order to make SWO working correctly, min. J-Link software V6.33a is required. Previous versions are not guaranteed to work correctly with SWO. The following example project was created with Embedded Studio V3.40.

Sample projects

The following sample projects that demonstrate SWO on the STM32H743I-EVAL are available:

This example project does not require any extra settings by the user. The SWO stream can be viewed with e.g. JLinkSWOViewer which is included in the J-Link software and documentation package and is available for free.

  • IAR EWARM 8.22 sample project
  • Note: IAR does not handle the special setup needed for this particular target device automatically so SWO printf will only work when using Ozone. The example project contains a Ozone configuration that will work out-of-the-box.