From e8f2f26b7b58cff2935b27dbe48ad29833343377 Mon Sep 17 00:00:00 2001
From: Nis Wechselberg <enbewe@enbewe.de>
Date: Sun, 15 Mar 2020 17:43:37 +0100
Subject: [PATCH] Initial Version for BuildStateStrip

---
 BuildStateStrip/BuildStateStrip.ino | 212 ++++++++++++++++++++++++++++
 1 file changed, 212 insertions(+)
 create mode 100644 BuildStateStrip/BuildStateStrip.ino

diff --git a/BuildStateStrip/BuildStateStrip.ino b/BuildStateStrip/BuildStateStrip.ino
new file mode 100644
index 0000000..fdf7120
--- /dev/null
+++ b/BuildStateStrip/BuildStateStrip.ino
@@ -0,0 +1,212 @@
+#include <ESP8266WiFi.h>          /* Basic ESP WiFi support */
+#include <DNSServer.h>            /* Needed by other libraries */
+#include <ESP8266WebServer.h>     /* WebServer for config and RET api */
+#include <ArduinoJson.h>          /* JSON handling for REST api */
+#include <WiFiManager.h>          /* Runtime WiFi Configuration */
+#include <Adafruit_NeoPixel.h>    /* Comfortable control for WS2812 */
+
+// Pin the LED strip is connected to
+#define LED_PIN D4                /* D4 is not the same as just 4 */
+
+// Number of LEDs in the strip
+#define LED_COUNT 150
+
+// Allocate a runtime object for the LED strip
+Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
+
+// Port for the REST api to control the LEDs
+#define HTTP_REST_PORT 80
+// Webserver handling the REST api
+ESP8266WebServer http_rest_server(HTTP_REST_PORT);
+
+
+void get_leds() {
+    StaticJsonDocument<200> jsonDocument;
+    JsonObject jsonObj = jsonDocument.as<JsonObject>();
+    char JSONmessageBuffer[200];
+
+//    if (led_resource.id == 0)
+//        http_rest_server.send(204);
+//    else {
+        jsonObj["id"] = 1;
+//       jsonObj["gpio"] = led_resource.gpio;
+//        jsonObj["status"] = led_resource.status;
+        serializeJsonPretty(jsonDocument, JSONmessageBuffer);
+        //jsonObj.prettyPrintTo(JSONmessageBuffer, sizeof(JSONmessageBuffer));
+        http_rest_server.send(200, "application/json", JSONmessageBuffer);
+//    }
+}
+
+
+void config_rest_server_routing() {
+    http_rest_server.on("/", HTTP_GET, []() {
+        http_rest_server.send(200, "text/html",
+            "Welcome to the ESP8266 REST Web Server");
+    });
+    http_rest_server.on("/leds", HTTP_GET, get_leds);
+    //http_rest_server.on("/leds", HTTP_POST, post_put_leds);
+    //http_rest_server.on("/leds", HTTP_PUT, post_put_leds);
+}
+
+
+void setup() {
+  // Enable serial port for debugging
+  Serial.begin(115200);
+  Serial.println("Booting ...");
+
+  // Initialize the LED strip as soon as possible
+  Serial.print("Initializing NeoPixel strip ... ");
+  strip.begin();           /* Initialize NeoPixel strip object */
+  strip.show();            /* Turn off all pixels asap */
+  /* Set brightness to something manageable, 
+   * to reduce current draw and don't burn 
+   * the eyes of bystanders */ 
+  strip.setBrightness(30);
+  Serial.println("done");
+
+  // Take care of the WiFi connection
+  // Local intialization of the manager, not needed at runtime anymore
+  Serial.println("Initializing WiFiManager");
+  WiFiManager wifiManager;
+  //reset saved settings
+  //wifiManager.resetSettings();
+
+  // Try to connect with existing credentials
+  // If that doesn't work fall back to config mode
+  // If nothing is configured until the timeout, fall back to AP mode
+  wifiManager.autoConnect();
+    
+  //if you get here you have connected to the WiFi
+  Serial.println("WiFi connected");
+
+  Serial.print("Starting WebServer for REST api ... ");
+  config_rest_server_routing();
+  http_rest_server.begin();
+  Serial.println("done");
+}
+
+void loop() {
+
+   http_rest_server.handleClient();
+
+  // Fill along the length of the strip in various colors...
+  Serial.println("Red ColorWipe");
+  colorWipe(strip.Color(255,   0,   0), 50); // Red
+
+  http_rest_server.handleClient();
+
+  Serial.println("Green ColorWipe");
+  colorWipe(strip.Color(  0, 255,   0), 50); // Green
+
+  http_rest_server.handleClient();
+  
+  Serial.println("Blue ColorWipe");
+  colorWipe(strip.Color(  0,   0, 255), 50); // Blue
+
+  // Do a theater marquee effect in various colors...
+
+  http_rest_server.handleClient();
+  
+  Serial.println("White TheaterChase");
+  theaterChase(strip.Color(127, 127, 127), 50); // White, half brightness
+
+  http_rest_server.handleClient();
+  
+  Serial.println("Red TheaterChase");
+  theaterChase(strip.Color(127,   0,   0), 50); // Red, half brightness
+
+  http_rest_server.handleClient();
+  
+  Serial.println("Blue TheaterChase");
+  theaterChase(strip.Color(  0,   0, 127), 50); // Blue, half brightness
+
+
+  http_rest_server.handleClient();
+  
+  Serial.println("Rainbow");
+  rainbow(10);             // Flowing rainbow cycle along the whole strip
+
+  http_rest_server.handleClient();
+  
+  Serial.println("Rainbow Chase");
+  theaterChaseRainbow(50); // Rainbow-enhanced theaterChase variant
+}
+
+
+// Some functions of our own for creating animated effects -----------------
+
+// Fill strip pixels one after another with a color. Strip is NOT cleared
+// first; anything there will be covered pixel by pixel. Pass in color
+// (as a single 'packed' 32-bit value, which you can get by calling
+// strip.Color(red, green, blue) as shown in the loop() function above),
+// and a delay time (in milliseconds) between pixels.
+void colorWipe(uint32_t color, int wait) {
+  for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...
+    strip.setPixelColor(i, color);         //  Set pixel's color (in RAM)
+    strip.show();                          //  Update strip to match
+    delay(wait);                           //  Pause for a moment
+  }
+}
+
+// Theater-marquee-style chasing lights. Pass in a color (32-bit value,
+// a la strip.Color(r,g,b) as mentioned above), and a delay time (in ms)
+// between frames.
+void theaterChase(uint32_t color, int wait) {
+  for(int a=0; a<10; a++) {  // Repeat 10 times...
+    for(int b=0; b<3; b++) { //  'b' counts from 0 to 2...
+      strip.clear();         //   Set all pixels in RAM to 0 (off)
+      // 'c' counts up from 'b' to end of strip in steps of 3...
+      for(int c=b; c<strip.numPixels(); c += 3) {
+        strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'
+      }
+      strip.show(); // Update strip with new contents
+      delay(wait);  // Pause for a moment
+    }
+  }
+}
+
+// Rainbow cycle along whole strip. Pass delay time (in ms) between frames.
+void rainbow(int wait) {
+  // Hue of first pixel runs 5 complete loops through the color wheel.
+  // Color wheel has a range of 65536 but it's OK if we roll over, so
+  // just count from 0 to 5*65536. Adding 256 to firstPixelHue each time
+  // means we'll make 5*65536/256 = 1280 passes through this outer loop:
+  for(long firstPixelHue = 0; firstPixelHue < 5*65536; firstPixelHue += 256) {
+    for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...
+      // Offset pixel hue by an amount to make one full revolution of the
+      // color wheel (range of 65536) along the length of the strip
+      // (strip.numPixels() steps):
+      int pixelHue = firstPixelHue + (i * 65536L / strip.numPixels());
+      // strip.ColorHSV() can take 1 or 3 arguments: a hue (0 to 65535) or
+      // optionally add saturation and value (brightness) (each 0 to 255).
+      // Here we're using just the single-argument hue variant. The result
+      // is passed through strip.gamma32() to provide 'truer' colors
+      // before assigning to each pixel:
+      strip.setPixelColor(i, strip.gamma32(strip.ColorHSV(pixelHue)));
+    }
+    strip.show(); // Update strip with new contents
+    delay(wait);  // Pause for a moment
+  }
+}
+
+// Rainbow-enhanced theater marquee. Pass delay time (in ms) between frames.
+void theaterChaseRainbow(int wait) {
+  int firstPixelHue = 0;     // First pixel starts at red (hue 0)
+  for(int a=0; a<30; a++) {  // Repeat 30 times...
+    for(int b=0; b<3; b++) { //  'b' counts from 0 to 2...
+      strip.clear();         //   Set all pixels in RAM to 0 (off)
+      // 'c' counts up from 'b' to end of strip in increments of 3...
+      for(int c=b; c<strip.numPixels(); c += 3) {
+        // hue of pixel 'c' is offset by an amount to make one full
+        // revolution of the color wheel (range 65536) along the length
+        // of the strip (strip.numPixels() steps):
+        int      hue   = firstPixelHue + c * 65536L / strip.numPixels();
+        uint32_t color = strip.gamma32(strip.ColorHSV(hue)); // hue -> RGB
+        strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'
+      }
+      strip.show();                // Update strip with new contents
+      delay(wait);                 // Pause for a moment
+      firstPixelHue += 65536 / 90; // One cycle of color wheel over 90 frames
+    }
+  }
+}