cancel
Showing results for 
Search instead for 
Did you mean: 

SWV not working with STM32CubeMX on TrueStudio

DMeye
Associate II

I'm working with a Stm32 Nucleo F429Zi board and I am having trouble getting the SWV working when debugging. When I created a blank new project and went through the Atollic tutorial to redirect printf() to go to _write() and eventually ITM_SendChar(). This project worked and printed everything fine so I decided to go ahead using CubeMX because I wanted to include lwIP.

After creating the project in CubeMX, without altering many settings, I went through the exact same steps as the previous project to redirect printf. However, when I tried printing in a loop the swv console only showed very strange characters (possibly from the extended ASCII codes) but only all at once, not a constant feed from the loop. I tried just using ITM_SendChar and followed it when debugging all the way until it executes, ITM->PORT[0].u8 = (uint8_t) ch; where the ch value was correct. However, when I look at the SWV trace log, the values going into port 0 are random and happen at the same time.

Since this project was done with the same procedure and has identical code and settings as far as I can tell, my assumption is it has to do with CubeMX changing a setting somewhere. Feel free to ask any question or for any snippets of code, although there isn't much original code on my part. Thanks for any help!

This discussion is locked. Please start a new topic to ask your question.
0 REPLIES 0