ESP8266-RGB-WiFiServer: Added WiFi based controller for ESP8266 led controller

This commit is contained in:
Nis Wechselberg 2015-10-16 11:08:49 +02:00
parent ce1ca4e38a
commit bece994f1b
3 changed files with 166 additions and 0 deletions

1
ESP8266-RGB-WiFiServer/.gitignore vendored Normal file
View file

@ -0,0 +1 @@
ESP8266-RGB-WiFiServer.h

View file

@ -0,0 +1,3 @@
// WiFi configuration
const char* ssid = "http://kiel.freifunk.net/";
const char* password = "";

View file

@ -0,0 +1,162 @@
/********************************************************************************
* The MIT License (MIT)
*
* Copyright (c) 2015 Nis Wechselberg
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
********************************************************************************/
/********************************************************************************
* ESP8266-RGB-WiFiServer
* Sets the color of an RGB LED Ribbon through an HTTP Server
********************************************************************************/
#include <ESP8266WiFi.h>
#include "ESP8266-RGB-WiFiServer.h"
// Pin configuration
const int redPin = 12;
const int greenPin = 13;
const int bluePin = 14;
// HTTP configuration
const unsigned char port = 80;
// Create an instance of the server
WiFiServer server(port);
void setup() {
// Initialize Serial connection
Serial.begin(115200);
delay(10);
// Prepare color pins
pinMode(redPin, OUTPUT);
pinMode(greenPin, OUTPUT);
pinMode(bluePin, OUTPUT);
// Connect to WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
// Start the server
server.begin();
Serial.println("Server started");
// Print the IP address
Serial.println(WiFi.localIP());
// Test the LED color channels
setColourRgb(0,0,0);
delay(500);
setColourRgb(200,0,0);
delay(500);
setColourRgb(0,200,0);
delay(500);
setColourRgb(0,0,200);
delay(500);
setColourRgb(200,200,200);
delay(500);
setColourRgb(0,0,0);
}
void loop() {
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
// Wait until the client sends some data
Serial.println("new client");
while(!client.available()){
delay(1);
}
// Read the first line of the request
String req = client.readStringUntil('\r');
Serial.println(req);
client.flush();
// Match the request
if (req.indexOf("/gpio/rgb/") != -1) {
// Request of the form "/gpio/rgb/red/green/blue/"
// Delimiters for pwm values
int br, er, eg, eb;
br = req.indexOf("/gpio/rgb/") + 10;
er = req.indexOf("/",br+1);
eg = req.indexOf("/",er+1);
eb = req.indexOf("/",eg+1);
// Check if all values were filled in the request
if (br == -1 || er == -1 || eg == -1 || eb == -1) {
Serial.println("Invalid request");
client.stop();
return;
}
// Parse values in request
int red = req.substring(br,er).toInt();
int green = req.substring(er+1,eg).toInt();
int blue = req.substring(eg+1,eb).toInt();
// Sanitize values
if (red < 0) { red = 0; }
if (green < 0) { green = 0; }
if (blue < 0) { blue = 0; }
if (red > 1023) { red = 1023; }
if (green > 1023) { green = 1023; }
if (blue > 1023) { blue = 1023; }
// Apply colors
setColourRgb(red, green, blue);
} else {
Serial.println("invalid request");
client.stop();
return;
}
client.flush();
// Prepare the response
String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nOK</html>\n";
// Send the response to the client
client.print(s);
delay(1);
Serial.println("Disconnecting client");
// The client will actually be disconnected
// when the function returns and 'client' object is detroyed
}
/* Helper function to set the colors of the led strip */
void setColourRgb(unsigned int red, unsigned int green, unsigned int blue) {
analogWrite(redPin, red);
analogWrite(greenPin, green);
analogWrite(bluePin, blue);
}