Improved ESP8266 WifiServer for RGB ribbon. Added option for color cycling and persistent storage in eeprom. Added command to retreive current values.
This commit is contained in:
Nis Boerge Wechselberg
parent
bece994f1b
commit
587a7ed304
1 changed files with 171 additions and 75 deletions
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@ -26,20 +26,39 @@
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* ESP8266-RGB-WiFiServer
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* Sets the color of an RGB LED Ribbon through an HTTP Server
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********************************************************************************/
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#include <EEPROM.h>
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#include <ESP8266WiFi.h>
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#include "ESP8266-RGB-WiFiServer.h"
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// Pin configuration
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const int redPin = 12;
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const int greenPin = 13;
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const int bluePin = 14;
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const short redPin = 12;
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const short greenPin = 13;
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const short bluePin = 14;
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// EEPROM Adress config
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const unsigned char modeAddress = 0;
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const unsigned char redAddress = 1;
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const unsigned char greenAddress = 2;
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const unsigned char blueAddress = 3;
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// Color values
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unsigned char modeValue;
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unsigned char redValue;
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unsigned char greenValue;
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unsigned char blueValue;
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unsigned char decColor;
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// Scale factors
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float globalScale = 3.0;
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float redScale = 1.0;
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float greenScale = 1.0;
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float blueScale = 0.7;
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// HTTP configuration
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const unsigned char port = 80;
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// Create an instance of the server
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WiFiServer server(port);
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void setup() {
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// Initialize Serial connection
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Serial.begin(115200);
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@ -55,9 +74,7 @@ void setup() {
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Serial.println();
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Serial.print("Connecting to ");
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Serial.println(ssid);
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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@ -67,96 +84,175 @@ void setup() {
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// Start the server
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server.begin();
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Serial.println("Server started");
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Serial.print("Server started at IP address ");
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// Print the IP address
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Serial.println(WiFi.localIP());
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// Read stored mode and previous color values from EEPROM
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EEPROM.begin(16);
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readFromEEPROM();
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// Test the LED color channels
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setColourRgb(0,0,0);
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setLight(0,0,0);
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delay(500);
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setColourRgb(200,0,0);
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setLight(100,0,0);
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delay(500);
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setColourRgb(0,200,0);
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setLight(0,100,0);
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delay(500);
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setColourRgb(0,0,200);
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setLight(0,0,100);
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delay(500);
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setColourRgb(200,200,200);
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setLight(100,100,100);
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delay(500);
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setColourRgb(0,0,0);
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updateLight();
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}
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void loop() {
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// Check if a client has connected
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WiFiClient client = server.available();
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if (!client) {
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return;
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}
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// Wait until the client sends some data
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Serial.println("new client");
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while(!client.available()){
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delay(1);
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}
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// Read the first line of the request
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String req = client.readStringUntil('\r');
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Serial.println(req);
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client.flush();
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// Match the request
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if (req.indexOf("/gpio/rgb/") != -1) {
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// Request of the form "/gpio/rgb/red/green/blue/"
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// Delimiters for pwm values
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int br, er, eg, eb;
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br = req.indexOf("/gpio/rgb/") + 10;
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er = req.indexOf("/",br+1);
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eg = req.indexOf("/",er+1);
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eb = req.indexOf("/",eg+1);
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// Check if all values were filled in the request
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if (br == -1 || er == -1 || eg == -1 || eb == -1) {
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Serial.println("Invalid request");
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client.stop();
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return;
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if (client) {
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// Wait until the client sends some data
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Serial.println("Client connected");
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while(!client.available()){
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delay(1);
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}
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// Parse values in request
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int red = req.substring(br,er).toInt();
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int green = req.substring(er+1,eg).toInt();
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int blue = req.substring(eg+1,eb).toInt();
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// Read the first line of the request
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String req = client.readStringUntil('\r');
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Serial.println(req);
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client.flush();
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// Sanitize values
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if (red < 0) { red = 0; }
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if (green < 0) { green = 0; }
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if (blue < 0) { blue = 0; }
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if (red > 1023) { red = 1023; }
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if (green > 1023) { green = 1023; }
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if (blue > 1023) { blue = 1023; }
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// Check if new value should be set or values should be read
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if (req.indexOf("/set/") != -1) {
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// Request of the form "/set/mode/red/green/blue/"
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// Delimiters for values
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int indexMode, indexRed, indexGreen, indexBlue, endIndexBlue;
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indexMode = req.indexOf("/set/") + 5;
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indexRed = req.indexOf("/",indexMode + 1);
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indexGreen = req.indexOf("/",indexRed + 1);
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indexBlue = req.indexOf("/",indexGreen + 1);
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endIndexBlue = req.indexOf("/",indexBlue + 1);
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// Check if all values were filled in the request
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if (indexMode == -1 || indexRed == -1 || indexGreen == -1
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|| indexBlue == -1 || endIndexBlue == -1) {
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// Invalid request, abort
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Serial.println("Invalid request");
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client.stop();
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} else {
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// Parse values in request
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int mode = req.substring(indexMode, indexRed).toInt();
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int red = req.substring(indexRed + 1, indexGreen).toInt();
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int green = req.substring(indexGreen + 1, indexBlue).toInt();
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int blue = req.substring(indexBlue + 1, endIndexBlue).toInt();
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// Sanitize values
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if (mode < 0) { mode = 0; }
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if (red < 0) { red = 0; }
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if (green < 0) { green = 0; }
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if (blue < 0) { blue = 0; }
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if (mode > 1) { mode = 1; }
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if (red > 255) { red = 255; }
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if (green > 255) { green = 255; }
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if (blue > 255) { blue = 255; }
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// Apply colors
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setColourRgb(red, green, blue);
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} else {
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Serial.println("invalid request");
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client.stop();
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return;
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// Update values
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modeValue = mode;
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if (mode == 1) {
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decColor = 0;
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redValue = 255;
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greenValue = 0;
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blueValue = 0;
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} else {
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redValue = red;
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greenValue = green;
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blueValue = blue;
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}
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persistToEEPROM();
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}
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} else if (req.indexOf("/get/") != -1) {
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} else {
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Serial.println("invalid request");
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client.stop();
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}
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client.flush();
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// Prepare the response
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String response = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
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response += modeValue;
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response += "\n";
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response += redValue;
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response += "\n";
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response += greenValue;
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response += "\n";
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response += blueValue;
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response += "\n";
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// Send the response to the client
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client.print(response);
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delay(1);
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client.flush();
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Serial.println("Disconnecting client");
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// The client will actually be disconnected
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// when the function returns and 'client' object is detroyed
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}
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updateLight();
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}
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client.flush();
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void updateLight() {
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if (modeValue == 0) {
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// Normal static color mode
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} else if (modeValue == 1) {
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// Color cylce mode
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unsigned short rgbColor[3];
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rgbColor[0] = redValue;
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rgbColor[1] = greenValue;
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rgbColor[2] = blueValue;
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unsigned short incColor = (decColor + 1) % 3;
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rgbColor[decColor] -= 1;
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rgbColor[incColor] += 1;
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// Prepare the response
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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";
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redValue = rgbColor[0];
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greenValue = rgbColor[1];
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blueValue = rgbColor[2];
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// Send the response to the client
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client.print(s);
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delay(1);
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Serial.println("Disconnecting client");
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// The client will actually be disconnected
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// when the function returns and 'client' object is detroyed
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if (rgbColor[incColor] == 255) {
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decColor = incColor;
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}
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}
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setLight(redValue, greenValue, blueValue);
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delay(15);
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}
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/* Helper function to set the colors of the led strip */
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void setColourRgb(unsigned int red, unsigned int green, unsigned int blue) {
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analogWrite(redPin, red);
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analogWrite(greenPin, green);
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analogWrite(bluePin, blue);
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void setLight(unsigned char red, unsigned char green, unsigned char blue) {
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analogWrite(redPin, red * globalScale * redScale);
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analogWrite(greenPin, green * globalScale * greenScale);
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analogWrite(bluePin, blue * globalScale * blueScale);
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}
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void readFromEEPROM() {
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unsigned char newMode = EEPROM.read(modeAddress);
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if (newMode > 1) {
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// Uninitialized cells return 255, so reset that
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modeValue = 0;
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} else {
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modeValue = newMode;
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}
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redValue = EEPROM.read(redAddress);
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greenValue = EEPROM.read(greenAddress);
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blueValue = EEPROM.read(blueAddress);
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}
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void persistToEEPROM() {
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EEPROM.write(modeAddress, modeValue);
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EEPROM.write(redAddress, redValue);
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EEPROM.write(greenAddress, greenValue);
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EEPROM.write(blueAddress, blueValue);
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EEPROM.commit();
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}
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