What i want to do is, access web link, http://x.x.x.x/2/on, LED strip of 300 NUM_LED on, and then if click button off, all LED strip off.
But i encounter device stuck when i clicked on, sometime LED not all switch on, and the web seems no response, then wait few seconds, try to click on again, sometime the LED can all on. But off LED totally not work.
#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 = "Yukitson";
const char* password = "23062306";
// 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）
FastLED.clearData();
FastLED.setMaxRefreshRate(0);
// 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";
for (int ledNum = 0; ledNum < NUM_LEDS; ledNum++)
{
leds[ledNum] = CRGB::Red;
}
FastLED.show();
} else if (header.indexOf("GET /2/off") >= 0) {
Serial.println("RED LED is off");
outputRedState = "off";
FastLED.clear();
}
// 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("");
}
}