DNM testing

Signed-off-by: Sebastian Głąb <[email protected]>

Author: nordic-segl

samples/boards/nordic/coresight_stm/pytest/test_stm.py

@@ -138,7 +138,9 @@ def _nrfutil_dictionary_from_serial(
     try:
         # run nrfutil trace in background non-blocking
         logger.info(f"Executing:\n{cmd}")
-        proc = subprocess.Popen(cmd.split(), stdout=subprocess.DEVNULL)
+        proc = subprocess.run(cmd.split(), shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        logger.info(f'out: {proc.stdout}\n')
+        logger.info(f'err: {proc.stderr}\n')
     except OSError as exc:
         logger.error(f"Unable to start nrfutil trace:\n{cmd}\n{exc}")
     try: