Added Battery Monitoring

data/index.html

@@ -22,6 +22,8 @@
 			<h3>
 				%TITLE%
 			</h3>
+			<p>Battery Voltage: %BATTERY_VOLTAGE% V</p>
+			<p>Battery Level: %BATTERY_LEVEL% &percnt;</p>
 			<table class="table">
 				<thead>
 					<tr>

src/defaults.h

@@ -9,6 +9,11 @@
 #define WIFI_PASS "CaptureTheFlag"
 #endif
 
+
+#ifndef BAT_LOW_PERCENT
+#define BAT_LOW_PERCENT 10
+#endif
+
 #ifndef FACTION_1_NAME
 #define FACTION_1_NAME "Team A" 
 #endif

src/main.cpp

@@ -70,6 +70,12 @@ uint8_t Faction_1_dot = 0;
 uint8_t Faction_2_dot = 0;
 uint8_t Faction_3_dot = 0;
 
+float loadvoltage = 0;
+int battery_level = 0;
+
+const uint8_t sevenSeg_bat[] = {0x00, 0b01111100, 0b01110111, 0b01111000};
+const uint8_t sevenSeg_low[] = {0b00111000, 0b01011100, 0x00, 0x00};
+
 String processor(const String &var)
 {
   char buffer[16] = {0};
@@ -104,6 +110,16 @@ String processor(const String &var)
   if (var == "TITLE")
     return WIFI_SSID;
 
+  if (var == "BATTERY_LEVEL")
+  {
+    sprintf(buffer, "%d", battery_level);
+    return String(buffer);
+  }
+  if (var == "BATTERY_VOLTAGE")
+  {
+    sprintf(buffer, "%f", loadvoltage);
+    return String(buffer);
+  }
   return String(buffer);
 }
 
@@ -210,6 +226,21 @@ public:
 
 void SevenSeg_Output()
 {
+  if (battery_level < BAT_LOW_PERCENT)
+  {
+    disp_FAC_1.setBrightness(0);
+    disp_FAC_2.setBrightness(0);
+    disp_FAC_3.setBrightness(0);
+
+    disp_FAC_3.setSegments(sevenSeg_bat);
+    disp_FAC_2.setSegments(sevenSeg_low);
+    if (millis() % 5000 > 2500)
+      disp_FAC_1.showNumberDec(battery_level);
+    else
+      disp_FAC_1.showNumberDecEx(loadvoltage * 100, 0x40);
+  }
+  else
+  {
   disp_FAC_1.setBrightness(activeFaction == FACTION_1 ? 7 : 0);
   disp_FAC_2.setBrightness(activeFaction == FACTION_2 ? 7 : 0);
   disp_FAC_3.setBrightness(activeFaction == FACTION_3 ? 7 : 0);
@@ -284,10 +315,12 @@ void inputGetterTicker_callback()
 
 void powerMonitorTicker_callback()
 {
+
+  // loadvoltage and percentage is global, because of battery Monitoring
+
   float shuntvoltage = 0;
-  float busvoltage = 0;
   float current_mA = 0;
-  float loadvoltage = 0;
+  float busvoltage = 0;
   float power_mW = 0;
 
   shuntvoltage = ina219.getShuntVoltage_mV();
@@ -295,7 +328,9 @@ void powerMonitorTicker_callback()
   current_mA = ina219.getCurrent_mA();
   power_mW = ina219.getPower_mW();
   loadvoltage = busvoltage + (shuntvoltage / 1000);
+  battery_level = map(loadvoltage * 100, 655, 840, 0, 100);
 
+  Serial.printf("Battery Level: %d %%\n", battery_level);
   Serial.printf("Bus Voltage: %f V\n", busvoltage);
   Serial.printf("Shunt Voltage: %f mV\n", shuntvoltage);
   Serial.printf("Load Voltage: %f V\n", loadvoltage);