Merge pull request #8856 from aabadie/pr/openocd_debug_reset

dist/tools/openocd: add the possibility to do a reset before halt in openocd debug command

boards/b-l072z-lrwan1/Makefile.include

@@ -12,5 +12,8 @@ include $(RIOTMAKE)/tools/serial.inc.mk
 export DEBUG_ADAPTER ?= stlink
 export STLINK_VERSION ?= 2-1
 
+# call a 'reset halt' command before starting the debugger
+export OPENOCD_DBG_START_CMD = -c 'reset halt'
+
 # this board uses openocd
 include $(RIOTMAKE)/tools/openocd.inc.mk

dist/tools/openocd/openocd.sh

@@ -83,6 +83,10 @@
 # Debugger flags, will be passed to sh -c, remember to escape any quotation signs.
 # Use ${DBG_DEFAULT_FLAGS} to insert the default flags anywhere in the string
 : ${DBG_FLAGS:=${DBG_DEFAULT_FLAGS} ${DBG_EXTRA_FLAGS}}
+# Initial target state when using debug, by default a 'halt' request is sent to
+# the target when starting a debug session. 'reset halt' can also be used
+# depending on the type of target.
+: ${OPENOCD_DBG_START_CMD:=-c 'halt'}
 # This is an optional offset to the base address that can be used to flash an
 # image in a different location than it is linked at. This feature can be useful
 # when flashing images for firmware swapping/remapping boot loaders.
@@ -201,7 +205,7 @@ do_debug() {
             -c 'gdb_port ${GDB_PORT}' \
             -c 'init' \
             -c 'targets' \
-            -c 'halt' \
+            ${OPENOCD_DBG_START_CMD} \
             -l /dev/null & \
             echo \$! > $OCD_PIDFILE" &
     # Export to be able to access these from the sh -c command lines, may be