control.c: handle "battery critical" state

[bike-lights.git] / firmware / lights.h

diff --git a/firmware/lights.h b/firmware/lights.h
index 5032e1124b8633f2250a608632062192f63c536c..7bdc5b65619d09502f9a7eab7ac92ec2d0858f9a 100644 (file)
--- a/firmware/lights.h
+++ b/firmware/lights.h
@@ -88,6 +88,7 @@ pattern_t *buttons_setup_status0_pattern_select();
 pattern_t *buttons_setup_status1_pattern_select();
 
 /* battery.c */
+extern volatile unsigned char battery_critical;
 void battery_adc();
 void init_battery();
 unsigned char battery_gauge();