cpu/saml21: use core_panic in startup.c

cpu/saml21/include/cpu_conf.h

@@ -50,13 +50,23 @@ extern "C" {
 #endif
 /** @} */
 
-#ifdef __cplusplus
-}
-#endif
-
 /**
  * @brief CPUID_ID_LEN length of cpuid in bytes
  */
 #define CPUID_ID_LEN (16) /* 128 bits long, 16 bytes long */
+
+/**
+ * @brief Definition of different panic modes
+ */
+typedef enum {
+    NMI_HANDLER,            /**< non maskable interrupt */
+    HARD_FAULT,             /**< hard fault */
+    DUMMY_HANDLER           /**< dummy interrupt handler */
+} panic_t;
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __CPU_CONF_H */
 /** @} */

cpu/saml21/startup.c

@@ -24,6 +24,8 @@
 
 #include <stdint.h>
 
+#include "panic.h"
+
 /**
  * memory markers as defined in the linker script
  */
@@ -80,12 +82,12 @@ void reset_handler(void)
 
 void isr_nmi(void)
 {
-    while (1) {asm ("nop");}
+    core_panic(NMI_HANDLER, "NMI HANDLER");
 }
 
 void isr_hard_fault(void)
 {
-    while (1) {asm ("nop");}
+    core_panic(HARD_FAULT, "HARD FAULT");
 }
 
 /**
@@ -93,7 +95,7 @@ void isr_hard_fault(void)
  */
 void dummy_handler(void)
 {
-    while (1) {asm ("nop");}
+    core_panic(DUMMY_HANDLER, "DUMMY HANDLER");
 }
 
 /* Cortex-M specific interrupt vectors */