low voltage test

diff --git a/libraries/hexbright/hexbright.cpp b/libraries/hexbright/hexbright.cpp
index 2cd0511..f28bee1 100755
--- a/libraries/hexbright/hexbright.cpp
+++ b/libraries/hexbright/hexbright.cpp
@@ -1080,7 +1080,7 @@ void hexbright::detect_overheating() {
 ////////////////AVR VOLTAGE////////////////////
 ///////////////////////////////////////////////

-int band_gap_reading = 0;
+int band_gap_reading = 1000;
 int lowest_band_gap_reading = 1000;

 void hexbright::read_avr_voltage() {
@@ -1093,7 +1093,7 @@ void hexbright::read_avr_voltage() {

   // ADC register from source: http://www.sourcecodebrowser.com/avr-libc/1.8.0/iomx8_8h_source.html
   //  it seems that this may be incompatible with assembly code; ADCW should work if that becomes an issue.
-  band_gap_reading = ADC;
+  band_gap_reading = (ADC+band_gap_reading*7)/8;
   lowest_band_gap_reading = band_gap_reading < lowest_band_gap_reading ? band_gap_reading : lowest_band_gap_r
 }

@@ -1107,7 +1107,8 @@ BOOL hexbright::low_voltage_state() {
   static BOOL low = false;
   // lower band gap value corresponds to a higher voltage, trigger
   //  low voltage state if band gap value goes too high.
-  if (band_gap_reading > lowest_band_gap_reading+4) {
+  if (get_charge_state()==BATTERY &&
+      band_gap_reading > lowest_band_gap_reading+4) {
     low = true;
   }
   return low;