From 0b7a929ec62dc11a4b6d5f11fb2ac971dc41c0db Mon Sep 17 00:00:00 2001
From: Joakim Gebart <joakim.gebart@eistec.se>
Date: Tue, 10 Feb 2015 13:09:43 +0100
Subject: [PATCH] cortex-m4_common: Add debugger break in crash.c

---
 cpu/cortex-m4_common/crash.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cpu/cortex-m4_common/crash.c b/cpu/cortex-m4_common/crash.c
index e00842272e..c329272397 100644
--- a/cpu/cortex-m4_common/crash.c
+++ b/cpu/cortex-m4_common/crash.c
@@ -52,6 +52,8 @@ NORETURN void core_panic(int crash_code, const char *message)
     /* disable watchdog and all possible sources of interrupts */
     disableIRQ();
 #if DEVELHELP
+    /* The bkpt instruction will signal to the debugger to break here. */
+    __ASM("bkpt #0");
     /* enter infinite loop, into deepest possible sleep mode */
     while (1) {
         lpm_set(LPM_OFF);