FastLED web client, when clicked on, all RGB on in red color. Clicked off, all RGB off/black. but not work. Here is the full code, i don't know why it's loop always and web client stuck when i clicked on button on webpage
I can not turn on all LED, or turn off all LED.
#include <ESP8266WiFi.h>
#include <FastLED.h>
#define DATA_PIN 5
#define NUM_LEDS 300
CRGB leds[NUM_LEDS];
#define COLOR_ORDER GRB
#define BRIGHTNESS 254
#define FRAMES_PER_SECOND 30
// Enter your wifi network name and Wifi Password
const char* ssid = "";
const char* password = "";
// Set web server port number to 80
WiFiServer server(80);
// Variable to store the HTTP request
String header;
// These variables store current output state of LED
String outputRedState = "off";
// Assign output variables to GPIO pins
const int redLED = 5;
// Current time
unsigned long currentTime = millis();
// Previous time
unsigned long previousTime = 0;
// Define timeout time in milliseconds (example: 2000ms = 2s)
const long timeoutTime = 2000;
void setup() {
Serial.begin(115200);
//FastLED.addLeds<WS2812, DATA_PIN, GRB>(leds, NUM_LEDS);
LEDS.addLeds<WS2812B, DATA_PIN, GRB>(leds, NUM_LEDS); // 初始化光带
FastLED.setBrightness(BRIGHTNESS); // 设置光带亮度
set_max_power_in_volts_and_milliamps(5, 2000); // 光带电源管理（设置光带5伏特，500mA）
// Connect to Wi-Fi network with SSID and password
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
// Print local IP address and start web server
Serial.println("");
Serial.println("WiFi connected.");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
server.begin();
}
void loop() {
WiFiClient client = server.available(); // Listen for incoming clients
if (client) { // If a new client connects,
Serial.println("New Client."); // print a message out in the serial port
String currentLine = ""; // make a String to hold incoming data from the client
currentTime = millis();
previousTime = currentTime;
while (client.connected() && currentTime - previousTime <= timeoutTime) { // loop while the client's connected
currentTime = millis();
if (client.available()) { // if there's bytes to read from the client,
char c = client.read(); // read a byte, then
Serial.write(c); // print it out the serial monitor
header += c;
if (c == '\n') { // if the byte is a newline character
// if the current line is blank, you got two newline characters in a row.
// that's the end of the client HTTP request, so send a response:
if (currentLine.length() == 0) {
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
// and a content-type so the client knows what's coming, then a blank line:
client.println("HTTP/1.1 200 OK");
client.println("Content-type:text/html");
client.println("Connection: close");
client.println();
// turns the GPIOs on and off
if (header.indexOf("GET /2/on") >= 0) {
Serial.println("RED LED is on");
outputRedState = "on";
fill_solid(leds, 300, CRGB::Red);
FastLED.show();
} else if (header.indexOf("GET /2/off") >= 0) {
Serial.println("RED LED is off");
outputRedState = "off";
fill_solid(leds, 300, 0);
FastLED.show();
}
// Display the HTML web page
client.println("<!DOCTYPE html><html>");
client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">");
client.println("<link rel=\"icon\" href=\"data:,\">");
// CSS to style the on/off buttons
client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");
client.println(".buttonRed { background-color: #ff0000; border: none; color: white; padding: 16px 40px; border-radius: 60%;");
client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");
client.println(".buttonOff { background-color: #77878A; border: none; color: white; padding: 16px 40px; border-radius: 70%;");
client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}</style></head>");
// Web Page Heading
client.println("<body><h1>My LED Control Server</h1>");
// Display current state, and ON/OFF buttons for GPIO 2 Red LED
client.println("<p>Red LED is " + outputRedState + "</p>");
// If the outputRedState is off, it displays the OFF button
if (outputRedState == "off") {
client.println("<p><a href=\"/2/on\"><button class=\"button buttonOff\">OFF</button></a></p>");
} else {
client.println("<p><a href=\"/2/off\"><button class=\"button buttonRed\">ON</button></a></p>");
}
client.println("</body></html>");
// The HTTP response ends with another blank line
client.println();
// Break out of the while loop
break;
} else { // if you got a newline, then clear currentLine
currentLine = "";
}
} else if (c != '\r') { // if you got anything else but a carriage return character,
currentLine += c; // add it to the end of the currentLine
}
}
}
// Clear the header variable
header = "";
// Close the connection
client.stop();
Serial.println("Client disconnected.");
Serial.println("");
}
}
