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v1.ino
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v1.ino
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/*********
Gabriel Soares
Robô Wireless Multidirecional
Project: github.com/soaresgabe/robozinho-v1
*********/
// Load Wi-Fi library
#include <ESP8266WiFi.h>
// Set Wi-Fi
const char* ssid = "Robo | Gabe";
const char* password = "999999999";
// Set web server port number to 80
WiFiServer server(80);
// Variable to store the HTTP request
String header;
String motorState = "off";
// Assign output variables to GPIO pins
#define IN1 D5
#define IN2 D6
#define IN3 D7
#define IN4 D8
void setup() {
Serial.begin(115200);
// Initialize the output variables as outputs
pinMode(IN1, OUTPUT);
pinMode(IN2, OUTPUT);
pinMode(IN3, OUTPUT);
pinMode(IN4, OUTPUT);
// Set outputs to LOW
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
// Connect to Wi-Fi network with SSID and password
Serial.print("Setting AP (Access Point)…");
WiFi.softAP(ssid, password);
IPAddress IP = WiFi.softAPIP();
Serial.print("AP IP address: ");
Serial.println(IP);
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
while (client.connected()) { // loop while the client's connected
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 motors on and off
if (header.indexOf("GET /motor/foward") >= 0 && motorState == "on") {
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
} else if (header.indexOf("GET /motor/backward") >= 0 && motorState == "on") {
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
} else if (header.indexOf("GET /motor/left") >= 0 && motorState == "on") {
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
} else if (header.indexOf("GET /motor/right") >= 0 && motorState == "on") {
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
} else if (header.indexOf("GET /motor/on") >= 0) {
motorState = "on";
} else if (header.indexOf("GET /motor/off") >= 0) {
motorState = "off";
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
}
// HTML HEAD
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
client.println("<style>html { font-family: Helvetica; display: inline-block; margin: auto; text-align: center;}");
client.println(".button { background-color: #555555; color: white; padding: 16px 40px; border-radius: 50%;");
client.println("text-decoration: none; font-size: 30px; margin: 20px; cursor: pointer;}");
client.println(".on {background-color: #33ff33; border-radius: 0%}");
client.println(".off {background-color: #ff3333; border-radius: 0%}");
client.println(".div { margin: auto;}");
client.println("</style></head>");
// HTML BODY
client.println("<body><h1>Robot | Web Server</h1>");
client.println("<div><a href=\"/motor/foward\"><button class=\"button\">^</button></a></div>");
client.println("<div><a href=\"/motor/left\"><button class=\"button\"><</button></a>");
client.println("<a href=\"/motor/right\"><button class=\"button\">></button></a></div>");
client.println("<div><a href=\"/motor/backward\"><button class=\"button\">v</button></a></div>");
client.println("<br><br>");
if (motorState == "off") {
client.println("<center><p><a href=\"/motor/on\"><button class=\"button off\">OFF</button></a></p></center>");
} else {
client.println("<center><p><a href=\"/motor/off\"><button class=\"button on\">ON</button></a></p></center>");
}
client.println("</body></html>");
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("");
}
}