From 91a8cc9190288eb171df344b20dee2518a2d83f8 Mon Sep 17 00:00:00 2001
From: starcalc <starcalc@ctdo.de>
Date: Fri, 2 Aug 2019 23:18:01 +0200
Subject: [PATCH] Added UDP; Pretty Printed

---
 esp-pixelbox.ino | 87 ++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 69 insertions(+), 18 deletions(-)

diff --git a/esp-pixelbox.ino b/esp-pixelbox.ino
index b219993..c05e019 100644
--- a/esp-pixelbox.ino
+++ b/esp-pixelbox.ino
@@ -4,8 +4,11 @@
 #include <Adafruit_GFX.h>
 #include <Adafruit_NeoPixel.h>
 
+
 #include <ArduinoOTA.h>
 #include "NeoPatterns.h"
+
+#include <WiFiUdp.h>
 #ifdef __AVR__
 #include <avr/power.h>
 #endif
@@ -20,6 +23,10 @@ Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(8, 8, PIN,
                             NEO_MATRIX_COLUMNS + NEO_MATRIX_ZIGZAG,
                             NEO_GRB            + NEO_KHZ800);
 
+WiFiUDP Udp;
+unsigned int localUdpPort = 4210;  // local port to listen on
+char incomingPacket[255];  // buffer for incoming packets
+
 const uint16_t colors[] = {
   matrix.Color(255, 0, 0), matrix.Color(0, 255, 0), matrix.Color(0, 0, 255)
 };
@@ -82,24 +89,24 @@ bool onSetVU(const HomieRange& range, const String& value) {
   {
     if (remaining.length() == 1)
     {
-      current = remaining.substring(0,1);
+      current = remaining.substring(0, 1);
     } else {
-      current = remaining.substring(0,2);
+      current = remaining.substring(0, 2);
     }
     int currentvalue = (int) strtol(&current[0], NULL, 10);
     // White peak
-    strip.setPixelColor(strip.numToPos(56+i-currentvalue*8), 16777215); // White dot
+    strip.setPixelColor(strip.numToPos(56 + i - currentvalue * 8), 16777215); // White dot
     // Shaded bar "below" the peak
-    if (currentvalue>0)
+    if (currentvalue > 0)
     {
-      for (int j=currentvalue-1;j>-1;j--)
+      for (int j = currentvalue - 1; j > -1; j--)
       {
-        strip.setPixelColor(strip.numToPos(56+i-j*8), 4276545); // Greyscale
+        strip.setPixelColor(strip.numToPos(56 + i - j * 8), 4276545); // Greyscale
       }
     }
     i++;
     remaining = remaining.substring(2);
-  } while (remaining.length()>0); // TODO: Not bigger than strip
+  } while (remaining.length() > 0); // TODO: Not bigger than strip
   strip.show();
   homieNode.setProperty("VU_" + String(range.index)).send(value);
 }
@@ -156,7 +163,7 @@ bool onSetEffect(const HomieRange& range, const String& value) {
   String firstfourbytes;
   if (value.length() > 3)
   {
-    firstfourbytes = value.substring(0,4);
+    firstfourbytes = value.substring(0, 4);
   } else {
     firstfourbytes = value;
   }
@@ -169,7 +176,7 @@ bool onSetEffect(const HomieRange& range, const String& value) {
       // Deactivate NeoPattern
       strip.None();
       String command = value.substring(0, sep);
-      String parameters = value.substring(sep+1);
+      String parameters = value.substring(sep + 1);
 
       int sep2 = parameters.indexOf("|");
       if (sep2 > 0) {
@@ -286,13 +293,17 @@ void loopHandler() {
 }
 
 
-bool NextPrev(bool next=false) {
+bool NextPrev(bool next = false) {
   if (next) {
     effect++;
-    if (effect>10) { effect=0; }
+    if (effect > 10) {
+      effect = 0;
+    }
   } else {
     effect--;
-    if (effect<0) { effect=10; }
+    if (effect < 0) {
+      effect = 10;
+    }
   }
   switch (effect)
   {
@@ -340,7 +351,7 @@ bool NextPrev(bool next=false) {
       strip.None();
       matrix.ScrollText("CTDO");
       break;
-    }
+  }
 }
 
 
@@ -352,14 +363,22 @@ bool onSetCommand(const HomieRange& range, const String& value) {
     NextPrev(false);
   } else if (value == "darker") {
     curBrightness -= 40;
-    if (curBrightness < 0) { curBrightness = 0; }
+    if (curBrightness < 0) {
+      curBrightness = 0;
+    }
     setBrightness(curBrightness);
   } else if (value == "brighter") {
     curBrightness += 40;
-    if (curBrightness > 255) { curBrightness = 255; }
+    if (curBrightness > 255) {
+      curBrightness = 255;
+    }
     setBrightness(curBrightness);
   } else if (value == "toggle") {
-    if (curBrightness>0) { curBrightness = 0; } else { curBrightness = 255; }
+    if (curBrightness > 0) {
+      curBrightness = 0;
+    } else {
+      curBrightness = 255;
+    }
     setBrightness(curBrightness);
   }
   homieNode.setProperty("command").send(value);
@@ -382,7 +401,7 @@ void setup() {
   homieNode.advertise("icon").settable(onSetIcon);
   homieNode.advertise("command").settable(onSetCommand);
   homieNode.advertiseRange("pixels", 0, (NUMPIXELS - 1) * 7).settable(onSetPixels);
-  homieNode.advertiseRange("vu", 0, sqrt(NUMPIXELS)-1).settable(onSetVU);
+  homieNode.advertiseRange("vu", 0, sqrt(NUMPIXELS) - 1).settable(onSetVU);
 
   strip.begin();
   strip.clear();
@@ -413,10 +432,42 @@ void setup() {
   matrix.setBrightness(255);
 
   strip.Plasma(); // Default effect
-  
+  Udp.begin(localUdpPort);
+
 }
 
 void loop() {
   Homie.loop();
   ArduinoOTA.handle();
+  //UDP
+  int packetSize = Udp.parsePacket();
+  if (packetSize)
+  {
+    // receive incoming UDP packets
+    // Serial.printf("Received %d bytes from %s, port %d\n", packetSize, Udp.remoteIP().toString().c_str(), Udp.remotePort());
+    int len = Udp.read(incomingPacket, 255);
+    if (len > 0)
+    {
+      // Serial.printf("Size: %d", len);
+      if (len == 192)
+      {
+        // Serial.printf("UDP packet contents: %s\n", incomingPacket);
+        int i = 0;
+        // Kein Effekt
+        strip.Stop();
+        for (int i=0; i<193; i=i+3)
+        {
+          // Serial.printf("Pixel %d to R %d - G %d - B %d\n", i/3, incomingPacket[i], incomingPacket[i+1], incomingPacket[i+2]);
+          strip.setPixelColor(strip.numToPos(i/3), incomingPacket[i], incomingPacket[i+1], incomingPacket[i+2]);
+        }
+        strip.show();
+      }
+    }
+    //uint16_t data=incomingPacket[0]<<8 | incomingPacket[1];
+
+    //printBinary(mapData(data));
+    //shiftRelais(mapData(data));
+
+  }
+
 }