2 files changed, 18 insertions, 4 deletions
diff --git a/common.c b/common.c
index e3f3195..31af23e 100644
--- a/common.c
+++ b/common.c
@@ -1,4 +1,19 @@
 #include "common.h"
+#include "pwm.h"
 
 volatile uint8_t wakeup = 0;
 
+/*	shutdown device signaling internal error
+ */
+void shutdownError () {
+	pwmSet (0, PWM_ON);
+	for (uint8_t i = 1; i < PWM_LED_COUNT-1; i++) {
+		pwmSet (i, PWM_OFF);
+	}
+	pwmSet (PWM_LED_COUNT-1, PWM_ON);
+	sleep_enable ();
+	while (1) {
+		sleep_cpu ();
+	}
+}
+
diff --git a/common.h b/common.h
index fb53d4d..eced70e 100644
--- a/common.h
+++ b/common.h
@@ -17,10 +17,7 @@
 #include <avr/interrupt.h>
 #define assert(x) if (!(x)) { \
 		puts("assert in " __FILE__ ":" #x); \
-		sleep_enable (); \
-		while (1) { \
-			sleep_cpu (); \
-		} \
+		shutdownError (); \
 	}
 
 #include <stdbool.h>
@@ -45,5 +42,7 @@ enum {
 		wakeup &= ~(1 << x); \
 	}
 
+void shutdownError ();
+
 #endif /* COMMON_H */