add Arduino trace sketch

Arduino/Lights/Lights.ino

@@ -0,0 +1,100 @@
+
+int langs[] = {2,4,7,8};
+int leds[] = {6,9,10,11};
+int triggerPin = 12;
+int tracePin = 3;
+
+bool langStatus[] = {0,0,0,0};
+int oldLang = 0;
+int currentLang = 0;
+
+bool oldTrigger = 0;
+bool trigger = 0;
+
+int traceStatus = 0;
+
+void setup() {
+  
+  Serial.begin(9600);
+  
+  for(int i=0; i<4; i++) {
+    pinMode(langs[i], INPUT);
+    pinMode(leds[i], OUTPUT);
+  }
+  pinMode(triggerPin, INPUT);
+  pinMode(tracePin, OUTPUT);
+
+  for(int i=0; i<255; i++) {
+    analogWrite(tracePin, i);
+    delay(10);
+  }
+}
+
+void loop() {
+
+  trigger = digitalRead(triggerPin);
+  
+  if(oldTrigger != trigger) {
+    oldTrigger = trigger;
+    
+    if(trigger == HIGH) {
+      checkLang();
+      Serial.print("speech");
+      Serial.print("\t");
+      Serial.println(currentLang);
+      
+      for(int i=traceStatus; i>=0; i--) {
+        analogWrite(tracePin, i);
+        delay(5);
+      }
+      for(int i=0; i<1000; i++) {
+        analogWrite(leds[0], constrain(i,0,255));
+        analogWrite(leds[1], constrain(i-100, 0, 255));
+        analogWrite(leds[2], constrain(i-300, 0, 255));
+        analogWrite(leds[3], constrain(i-600, 0, 255));
+        delay(5);
+      }
+    } else {
+      for(int i=255; i>=0; i--) {
+        checkLang();
+        for(int x=0; x<4; x++) {
+          analogWrite(leds[x], i);
+        }
+        delay(10);
+      }
+
+      while(oldTrigger == trigger) {
+        trigger = digitalRead(triggerPin);
+        for(traceStatus=0; traceStatus<255; traceStatus++) {
+          analogWrite(tracePin, traceStatus);
+          delay(10);
+        }
+        trigger = digitalRead(triggerPin);
+        for(traceStatus=255; traceStatus>0; traceStatus--) {
+          analogWrite(tracePin, traceStatus);
+          delay(10);
+        }
+        trigger = digitalRead(triggerPin);
+      }
+    }
+  }
+}
+
+
+void checkLang() {
+  
+  currentLang = 0;
+  for(int i=0; i<4; i++) {
+    langStatus[i] = digitalRead(langs[i]);
+    //Serial.print(langStatus[i]);
+    //Serial.print("\t");
+    if(langStatus[i] == LOW) {
+      currentLang = i+1;
+    }
+  }  
+
+  if(oldLang != currentLang) {
+    oldLang = currentLang;
+    //Serial.println(currentLang);
+  }
+}