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IoTLED.ino
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IoTLED.ino
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#include "WiFi.h"
#include "ESPAsyncWebServer.h"
#include "SPIFFS.h"
#include "string.h"
#include <FastLED.h>
#include <ArduinoJson.h>
FASTLED_USING_NAMESPACE
#define DATA_PIN 12
//#define CLK_PIN 4
#define LED_TYPE WS2813
#define COLOR_ORDER GRB
#define NUM_LEDS 300
CRGB leds[NUM_LEDS];
#define BRIGHTNESS 10 // Default Brightness on ESP startup
#define FRAMES_PER_SECOND 300
// Global Effect Variables
uint8_t activeEffect;
uint8_t brightness;
struct effectData {
uint32_t color1;
} d_effect1;
uint8_t gHue = 0; // rotating "base color" for rainbow effect
// Network
const char* ssid = "*";
const char* password = "*";
IPAddress local_IP(192, 168, 178, 6);
IPAddress gateway(192, 168, 178, 1);
IPAddress subnet(255, 255, 255, 0);
IPAddress primaryDNS(8, 8, 8, 8); // optional
IPAddress secondaryDNS(8, 8, 4, 4); // optional
// Variable to store the HTTP request
String header;
// Auxiliar variables to store the current output state
String effect1State = "off";
String effect2State = "off";
// Create AsyncWebServer and WebSocket object on port 80
AsyncWebServer server(80);
AsyncWebSocket ws("/ws");
//AsyncWebSocketClient * globalClient = NULL;
void onWsEvent(AsyncWebSocket * server, AsyncWebSocketClient * client, AwsEventType type, void * arg, uint8_t *data, size_t len) {
if (type == WS_EVT_CONNECT) {
Serial.println("Websocket client connection received");
//globalClient = client;
} else if (type == WS_EVT_DISCONNECT) {
Serial.println("Client disconnected");
Serial.println("-----------------------");
//globalClient = NULL;
} else if (type == WS_EVT_DATA) {
Serial.print("Data received: ");
String msg = "";
for (int i = 0; i < len; i++) {
msg += (char)data[i];
}
Serial.println(msg);
if (msg.startsWith("0x")) {
String temp = msg.substring(2, 4);
uint8_t tempEffect;
int type = temp.toInt();
msg.remove(0, 4);
char *eptr;
switch (type) {
case 99: // change activeEvent
temp = msg.substring(0,2);
tempEffect = (uint8_t)atoi(temp.c_str());
if (tempEffect >= 1 && tempEffect <= 3)
activeEffect = tempEffect;
break;
case 98: // brightness
temp = msg.substring(0,3);
brightness = (uint8_t)atoi(temp.c_str());
break;
case 0: // stip off
activeEffect = 0;
break;
case 1: // effect1 data
activeEffect = 1;
temp = msg.substring(1, 7); //filter out #
d_effect1.color1 = (uint32_t)strtoul(temp.c_str(), &eptr, 16);
break;
case 2: // effect2 data
activeEffect = 2;
//temp = msg.substring(1, 7); //filter out #
//d_effect1.color1 = (uint32_t)strtoul(temp.c_str(), &eptr, 16);
break;
case 3: // effect3 data
activeEffect = 3;
//temp = msg.substring(1, 7); //filter out #
//d_effect1.color1 = (uint32_t)strtoul(temp.c_str(), &eptr, 16);
break;
default:
break;
}
}
//brightness = (uint8_t)atoi(msg.c_str());
//ws.textAll("response from server!");
//globalClient->text("response from server!");
}
}
void loadSettings() {
File settings = SPIFFS.open("/settings.json", "r");
if (!settings) {
Serial.println("ERR: Failed to open settings JSON!");
}
// Allocate a temporary JsonDocument
// Don't forget to change the capacity to match your requirements.
StaticJsonDocument<200> doc;
// Deserialize the JSON document
DeserializationError error = deserializeJson(doc, settings);
if (error) {
Serial.println("ERR: Failed to deserialize JSON file!");
}
activeEffect = doc["activeEffect"].as<uint8_t>();
brightness = doc["brightness"].as<uint8_t>();
char *eptr; // does nothing
String temp;
temp = doc["effect1Data"]["color1"].as<String>();
temp.remove(0, 1);
d_effect1.color1 = (uint32_t)strtoul(temp.c_str(), &eptr, 16); // wtf
//Serial.println(d_effect1.color1);
//Serial.print("Loaded brightness: ");
//Serial.println(brightness);
settings.close();
}
void saveSettings() {
SPIFFS.remove("/settings.json");
File settings = SPIFFS.open("/settings.json", "w");
if (!settings) {
Serial.println("ERR: Failed to open settings file for writing!");
}
// Allocate a temporary JsonDocument
// Don't forget to change the capacity to match your requirements.
StaticJsonDocument<200> doc;
doc["activeEffect"] = activeEffect;
doc["brightness"] = brightness;
String temp = String(d_effect1.color1, HEX);
doc["effect1Data"]["color1"] = "#" + temp;
Serial.println("Saved Color: #" + temp);
// Serialize JSON to file
if (serializeJson(doc, settings) == 0) {
Serial.println("ERR: Failed to write to settings JSON!");
}
// Close the file
settings.close();
}
/* // Replaces HTML placeholder with state values
String processor(const String& var) {
if (var == "EFFECT1STATE") {
return effect1State;
} else if (var == "EFFECT2STATE") {
return effect2State;
}
return "!!!PLACEHOLDER ERROR!!!"; // replaces not (yet) defined placeholder with this
} */
void setup() {
Serial.begin(115200);
// ----------------------------- SPIFFS -----------------------------
if (!SPIFFS.begin(true)) {
Serial.println("An Error has occurred while mounting SPIFFS");
return;
}
/*
saveSettings();
Serial.println("Settings saved");
*/
loadSettings();
Serial.println("Settings loaded");
// ----------------------------- LEDS -----------------------------
FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
FastLED.setBrightness(BRIGHTNESS);
// ----------------------------- WIFI -----------------------------
// Configure WiFi for Static IP
if (!WiFi.config(local_IP, gateway, subnet, primaryDNS, secondaryDNS)) {
Serial.println("STA Failed to configure");
}
// Connect to Wi-Fi network with SSID and password
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
// Wait 5 seconds for WiFi to connect or else reboot
uint8_t wifitimeout = 0;
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
if (++wifitimeout > 10) {
WiFi.disconnect(true);
ESP.restart();
}
}
// Print local IP address and start web server
Serial.println("");
Serial.println("WiFi connected.");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
// ----------------------------- SERVER -----------------------------
// Route for root / web page
server.on("/", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/index.html", "text/html");
});
// Route for .js
server.on("/IoTLED.js", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/IoTLED.js", "application/javascript");
});
// Route for settings JSON
server.on("/settings.json", HTTP_GET, [](AsyncWebServerRequest * request) {
saveSettings();
request->send(SPIFFS, "/settings.json", "application/json");
});
// Route for icons
server.on("/android-chrome-192x192.png", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/android-chrome-192x192.png", "image/png");
});
server.on("/android-chrome-512x512.png", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/android-chrome-512x512.png", "image/png");
});
server.on("/apple-touch-icon.png", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/apple-touch-icon.png", "image/png");
});
server.on("/favicon.ico", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/favicon.ico", "image/x-icon");
});
server.on("/favicon-16x16.png", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/favicon-16x16.png", "image/png");
});
server.on("/favicon-32x32.png", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/favicon-32x32.png", "image/png");
});
server.on("/mstile-150x150.png", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/mstile-150x150.png", "image/png");
});
server.on("/safari-pinned-tab.svg", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/safari-pinned-tab.svg", "image/svg");
});
server.on("/browserconfig.xml", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/browserconfig.xml", "application/xml");
});
server.on("/site.webmanifest", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(SPIFFS, "/site.webmanifest", "text/webmanifest");
});
/* // Route to load style.css file
server.on("/style.css", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/style.css", "text/css");
}); */
ws.onEvent(onWsEvent);
server.addHandler(&ws);
server.begin();
}
void Fire(int Cooling, int Sparking, int SpeedDelay) {
static byte heat[NUM_LEDS];
int cooldown;
// Step 1. Cool down every cell a little
for( int i = 0; i < NUM_LEDS; i++) {
cooldown = random(0, ((Cooling * 10) / NUM_LEDS) + 2);
if(cooldown>heat[i]) {
heat[i]=0;
} else {
heat[i]=heat[i]-cooldown;
}
}
// Step 2. Heat from each cell drifts 'up' and diffuses a little
for( int k= NUM_LEDS - 1; k >= 2; k--) {
heat[k] = (heat[k - 1] + heat[k - 2] + heat[k - 2]) / 3;
}
// Step 3. Randomly ignite new 'sparks' near the bottom
if( random(255) < Sparking ) {
int y = random(7);
heat[y] = heat[y] + random(160,255);
//heat[y] = random(160,255);
}
// Step 4. Convert heat to LED colors
for( int j = 0; j < NUM_LEDS; j++) {
setPixelHeatColor(j, heat[j] );
}
delay(SpeedDelay);
}
void setPixelHeatColor (int Pixel, byte temperature) {
// Scale 'heat' down from 0-255 to 0-191
byte t192 = round((temperature/255.0)*191);
// calculate ramp up from
byte heatramp = t192 & 0x3F; // 0..63
heatramp <<= 2; // scale up to 0..252
// figure out which third of the spectrum we're in:
if( t192 > 0x80) { // hottest
setPixel(Pixel, 255, 255, heatramp);
} else if( t192 > 0x40 ) { // middle
setPixel(Pixel, 255, heatramp, 0);
} else { // coolest
setPixel(Pixel, heatramp, 0, 0);
}
}
void setPixel(int Pixel, byte red, byte green, byte blue) {
// FastLED
leds[Pixel].r = red;
leds[Pixel].g = green;
leds[Pixel].b = blue;
}
void loop() {
switch (activeEffect) {
case 1:
fill_solid(leds, NUM_LEDS, d_effect1.color1);
break;
case 2:
fill_solid(leds, NUM_LEDS, CRGB::Blue);
break;
case 3:
Fire(55,120,15);
break;
case 0:
default:
fill_solid(leds, NUM_LEDS, CRGB::Black);
break;
}
FastLED.setBrightness(brightness);
FastLED.show();
FastLED.delay(1000 / FRAMES_PER_SECOND);
//EVERY_N_MILLISECONDS( 20 ) { gHue++; } // slowly cycle the "base color" through the rainbow
}