How can I make ST-LINK debugging work?

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Answer

Sometimes customers experience problems getting debugging to work with ST-LINK.

First of all, ensure that the ST-LINK gdbserver (found in the TrueSTUDIO entry in the Windows Start-menu) is started before a debug session is launched.

In some cases, the ST-LINK will not initialize properly. In such a case, try the following sequence that works for most customers:

  • Connect the ST-LINK to the electronic board (with power off)
  • Connect power to the electronic board
  • Connect the ST-LINK USB cable into the PC
  • Start the ST-LINK gdbserver
  • Launch a TrueSTUDIO debug session from inside the IDE

You can see in the ST-LINK gdbserver console window if connection is established with the H/W or not.

  • If the final printout from the gdbserver is "Waiting for client to connect on port <PORTNR>..." everything is fine.
  • If the gdbserver print "Error in Initializing ST-Link device" and terminate, the gdbserver cannot connect to the hardware. Try the sequence above to make it work.

 

Tags for this item

ST-LINK