From 3bf250e14a100cd6dfa65e9ce6994c698f603ce8 Mon Sep 17 00:00:00 2001
From: Juergen Jung <github@der-onkel.net>
Date: Tue, 14 Feb 2017 20:39:52 +0100
Subject: [PATCH] New Larson Scanner

---
 esp-wemos-schild/esp-wemos-schild.ino | 78 ++++++++++++++++-----------
 1 file changed, 47 insertions(+), 31 deletions(-)

diff --git a/esp-wemos-schild/esp-wemos-schild.ino b/esp-wemos-schild/esp-wemos-schild.ino
index 155be69..9fe0a74 100644
--- a/esp-wemos-schild/esp-wemos-schild.ino
+++ b/esp-wemos-schild/esp-wemos-schild.ino
@@ -10,6 +10,7 @@
 uint16_t effectI=0,effectJ=0,wait = 50;
 unsigned long lastCall = 0;
 byte wPos = 0;
+uint8_t state = 0;
 
 Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
 
@@ -98,42 +99,57 @@ void loopHandler() {
   }
   else if (effect == "larson") {
     int SpeedDelay = 20;
-    int ReturnDelay = 50;
     int EyeSize = 5;
     uint32_t rgb[3] = {0};
-    for(int i = 0; i < pixels.numPixels()-EyeSize-2; i++) {
-      pixels.clear();
-      pixels.show();
 
-      getRGBValues(rgb,wheel(wPos));
-      pixels.setPixelColor(i, rgb[0]/10, rgb[1]/10, rgb[2]/10);
+    switch(state){
+      case 0:
+        if(lastCall + wait < millis()){
+          state++;
+        }
 
-      for(int j = 1; j <= EyeSize; j++) {
-        pixels.setPixelColor(i+j, wheel(wPos++));
-      }
-      uint32_t rgb[3] = {0};
-      getRGBValues(rgb,wheel(wPos));
-      pixels.setPixelColor(i+EyeSize+1, rgb[0]/10, rgb[1]/10, rgb[2]/10);
-      pixels.show();
-      delay(SpeedDelay);
+      break;
+      case 1:
+        for(int i = 0; i < pixels.numPixels()-EyeSize-2; i++) {
+          pixels.clear();
+          getRGBValues(rgb,wheel(wPos));
+          pixels.setPixelColor(i, rgb[0]/10, rgb[1]/10, rgb[2]/10);
+          for(int j = 1; j <= EyeSize; j++) {
+            pixels.setPixelColor(i+j, wheel(wPos++));
+          }
+          getRGBValues(rgb,wheel(wPos));
+          pixels.setPixelColor(i+EyeSize+1, rgb[0]/10, rgb[1]/10, rgb[2]/10);
+          pixels.show();
+
+          delay(SpeedDelay);
+        }
+        lastCall = millis();
+        state++;
+      break;
+      case 2:
+        if(lastCall + wait < millis()){
+          state++;
+        }
+      break;
+      case 3:
+        for(int i = pixels.numPixels()-EyeSize-2; i > 0; i--) {
+          pixels.clear();
+          getRGBValues(rgb,wheel(wPos));
+          pixels.setPixelColor(i, rgb[0]/10, rgb[1]/10, rgb[2]/10);
+          for(int j = 1; j <= EyeSize; j++) {
+            pixels.setPixelColor(i+j, wheel(wPos++));
+          }
+          pixels.setPixelColor(i+EyeSize+1, rgb[0]/10, rgb[1]/10, rgb[2]/10);
+          pixels.show();
+
+          delay(SpeedDelay);
+        }
+        lastCall = millis();
+        state++;
+      break;
+      default:
+        state = 0;
     }
-    delay(wait);
-
-    for(int i = pixels.numPixels()-EyeSize-2; i > 0; i--) {
-      pixels.clear();
-      pixels.show();
-      getRGBValues(rgb,wheel(wPos));
-      pixels.setPixelColor(i, rgb[0]/10, rgb[1]/10, rgb[2]/10);
-      //pixels.setPixelColor(i, 255/10, 0, 0);
-      for(int j = 1; j <= EyeSize; j++) {
-        //pixels.setPixelColor(i+j, 255, 0, 0);
-        pixels.setPixelColor(i+j, wheel(wPos++));
-      }
-      pixels.setPixelColor(i+EyeSize+1, rgb[0]/10, rgb[1]/10, rgb[2]/10);
-      pixels.show();
-      delay(SpeedDelay);
-    }
-    delay(wait);
   }
   else if (effect == "randomfade") {
     if(lastCall + wait > millis()){