new project, controlling rgb lights and detecting light level

battery_rgb/battery_rgb.ino

@@ -0,0 +1,90 @@
+//light measure
+int pin_light = A5;
+int light = 0;
+
+//output pins
+int red = 11;
+int green = 10;
+int blue = 9;
+
+//imaginary battery
+unsigned int bat_cap = 50000;
+unsigned int bat = 0;
+unsigned int ticks = 0;
+unsigned int wait = 100;
+double bat_percent;
+
+
+//initialises pins and serial
+void setup() {
+  // put your setup code here, to run once:
+  pinMode(red, OUTPUT);
+  pinMode(green, OUTPUT);
+  pinMode(blue, OUTPUT);
+
+  Serial.begin(9600);
+}
+
+
+//lame function to make life easier
+void RGBout(int rV, int gV, int bV) {
+  analogWrite(red, rV);
+  analogWrite(green,gV);
+  analogWrite(blue,bV);
+}
+
+
+//nifty calculation (also lame function (also makes life easier))
+double get_bat_percent() {
+  double temp = (double)bat/(double)bat_cap*100;
+  return temp;
+}
+
+
+//displays the charge of the battery to both outputs
+void show_bat() {
+  bat_percent = get_bat_percent();
+
+  Serial.print(ticks);
+  Serial.print(" ms elapsed. Charge: ");
+  Serial.print(bat_percent);
+  Serial.println("%");
+
+  if (0 < bat_percent && bat_percent <= 20) {
+    RGBout(128,0,0);
+    //red
+  } else if (20 < bat_percent && bat_percent <= 40) {
+    RGBout(128,128,0);
+    //yellow
+  } else if (40 < bat_percent && bat_percent <= 60) {
+    RGBout(0,128,0);
+    //green
+  } else if (60 < bat_percent && bat_percent <= 80) {
+    RGBout(0,128,128);
+    //turquoise
+  } else if (80 < bat_percent && bat_percent <= 100) {
+    RGBout(0,0,128);
+    //white
+  }
+}
+
+
+//you know what this does
+void loop() {
+  // put your main code here, to run repeatedly:
+  light = analogRead(pin_light);
+  bat += light;
+  ticks += wait;
+
+  if (bat >= bat_cap) {
+    Serial.print(ticks);
+    Serial.print(" ms. The system is fully charged.");
+    bat = bat_cap;
+    RGBout(128,128,128);
+    delay(120398435087134);
+  } else {
+    show_bat();
+  }
+
+  delay(wait);
+}