updates

firmware/eye_test/BAT_Driver.cpp

@@ -0,0 +1,16 @@
+#include "BAT_Driver.h"
+
+float BAT_analogVolts = 0;
+
+void BAT_Init(void)
+{
+  //set the resolution to 12 bits (0-4095)
+  analogReadResolution(12);
+}
+float BAT_Get_Volts(void)
+{
+  int Volts = analogReadMilliVolts(BAT_ADC_PIN); // millivolts
+  BAT_analogVolts = (float)(Volts * 3.0 / 1000.0) / Measurement_offset;
+  // printf("BAT voltage : %.2f V\r\n", BAT_analogVolts);
+  return BAT_analogVolts;
+}