added jlink.gdb file and updated submodules

.cargo/config.toml

@@ -4,6 +4,7 @@
 # runner = "arm-none-eabi-gdb -q -x openocd.gdb"
 # runner = "gdb-multiarch -q -x openocd.gdb"
 # runner = "gdb -q -x openocd.gdb"
+runner = "gdb-multiarch -q -x jlink.gdb"
 
 rustflags = [
   # This is needed if your flash or ram addresses are not aligned to 0x10000 in memory.x

jlink.gdb

@@ -0,0 +1,10 @@
+target remote localhost:2331
+
+monitor reset
+
+# *try* to stop at the user entry point (it might be gone due to inlining)
+break main
+
+load
+
+continue