diff --git a/ESP8266-RGB-WiFiServer/.gitignore b/ESP8266-RGB-WiFiServer/.gitignore new file mode 100644 index 0000000..eec3ac8 --- /dev/null +++ b/ESP8266-RGB-WiFiServer/.gitignore @@ -0,0 +1 @@ +ESP8266-RGB-WiFiServer.h diff --git a/ESP8266-RGB-WiFiServer/ESP8266-RGB-WiFiServer.h.template b/ESP8266-RGB-WiFiServer/ESP8266-RGB-WiFiServer.h.template new file mode 100644 index 0000000..f279001 --- /dev/null +++ b/ESP8266-RGB-WiFiServer/ESP8266-RGB-WiFiServer.h.template @@ -0,0 +1,3 @@ +// WiFi configuration +const char* ssid = "http://kiel.freifunk.net/"; +const char* password = ""; diff --git a/ESP8266-RGB-WiFiServer/ESP8266-RGB-WiFiServer.ino b/ESP8266-RGB-WiFiServer/ESP8266-RGB-WiFiServer.ino new file mode 100644 index 0000000..7ba72e3 --- /dev/null +++ b/ESP8266-RGB-WiFiServer/ESP8266-RGB-WiFiServer.ino @@ -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 +#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\r\n\r\nOK\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); +}