Merge pull request #3905 from OlegHahm/avr_panic_arch

atmega: added panic function

cpu/atmega_common/panic.c

+/*
+ * Copyright (C) 2015 INRIA
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     cpu_atmega_common
+ * @{
+ *
+ * @file
+ * @brief       Crash handling functions implementation for ATmega MCUs
+ *
+ * @author      Oliver Hahm <oliver.hahm@inria.fr>
+ */
+
+#include <avr/wdt.h>
+#include "lpm.h"
+
+void panic_arch(void)
+{
+    wdt_disable();
+#ifdef DEVELHELP
+    /* enter infinite loop, into deepest possible sleep mode */
+    while (1) {
+        lpm_set(LPM_OFF);
+    }
+#endif
+
+}

examples/gnrc_border_router/Makefile

@@ -10,8 +10,6 @@ RIOTBASE ?= $(CURDIR)/../..
 BOARD_INSUFFICIENT_MEMORY := airfy-beacon nrf51dongle nrf6310 pca10000 pca10005 nucleo-f334 \
                              spark-core stm32f0discovery yunjia-nrf51822
 
-BOARD_BLACKLIST := arduino-mega2560     # panic_arch not defined
-
 ifeq (,$(SLIP_UART))
   # set default (last available UART)
   SLIP_UART="(UART_NUMOF-1)"

examples/gnrc_networking/Makefile

@@ -12,7 +12,7 @@ BOARD_INSUFFICIENT_MEMORY := airfy-beacon chronos msb-430 msb-430h nrf51dongle \
                           stm32f0discovery telosb wsn430-v1_3b wsn430-v1_4 \
                           yunjia-nrf51822 z1
 
-BOARD_BLACKLIST        := arduino-mega2560 spark-core
+BOARD_BLACKLIST        := spark-core
 # arduino-mega2560: unknown error types (e.g. -EBADMSG)
 
 # Include packages that pull up and auto-init the link layer.