rhagni/server.ino

## server.ino
#include <ESP8266WiFi.h>

#define Sprintf(data...) { \
  Serial.printf(data); \
}

#define INITIATE_LED(led) { \
  pinMode(led, OUTPUT); \
  digitalWrite(led, LED_STATE_ON); \
}

const char* ssid = "<WIFI SSID>";
const char* password = "<WIFI PASS>";

const int LED_COM = 2;
const int LED_OTHER = 16;

const int LED_STATE_ON = LOW;
const int LED_STATE_OFF = HIGH;

const char* HTTP_RESPONSE_OK = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
const char* HTTP_RESPONSE_NOT_FOUND = "HTTP/1.1 404 Not Found\r\nContent-Type: text/html\r\nLocation: /\r\n\r\n";

int last_blink = 0;
bool blink_state = false;
const int BLINK_INTERVAL = 500;

WiFiServer server(80);

void setup() {
  Serial.begin(115200);
  delay(10);

  INITIATE_LED(LED_COM);
  INITIATE_LED(LED_OTHER);

  Sprintf("\r\n\r\nConnecting to %s\r\n", ssid);

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Sprintf(".");
  }

  Sprintf("\r\n\r\nWiFi connected");

  server.begin();

  Sprintf("Server started\r\n");

  Serial.println(WiFi.localIP());
}

void loop() {
  blink_led_other();

  WiFiClient client = server.available();
  if (!client) {
    return;
  }

  // Wait until the client sends some data
  Serial.println("new client");
  while (!client.available()) {
    delay(1);
  }

  String req = client.readStringUntil('\r');
  Serial.println(req);
  client.flush();

  int routeStart = req.indexOf(" ") + 1;
  int routeEnd = req.indexOf(" ", routeStart);
  String route = req.substring(routeStart, routeEnd);

  Serial.print("Route: ");
  Serial.print(route);
  Sprintf(" => (%i)\r\n", route.length());

  client.flush();

  if (route == "/") {
      client.print(HTTP_RESPONSE_OK);
      client.print(index());
  } else if (route == "/gpio/1" || route == "/gpio/0") {
      client.print(HTTP_RESPONSE_OK);
      client.print(blink_led(route));
  } else {
      client.print(HTTP_RESPONSE_NOT_FOUND);
      client.print(not_found());
  }

  client.flush();

  delay(1);

  Sprintf("Client disonnected\r\n");
}

void blink_led_other() {
  int now = millis();

  if ((now - last_blink) > BLINK_INTERVAL) {
    blink_state = !blink_state;

    last_blink = now;

    // Sprintf("Led state: %s\r\n", blink_state ? "ON" : "OFF");

    digitalWrite(LED_OTHER, blink_state ? LED_STATE_ON : LED_STATE_OFF);
  }
}

const char* index() {
  return "<!DOCTYPE html><html><head><meta charset=\"utf-8\"><meta name=\"viewport\" content=\"width=device-width\"><title>ESP8266 RULES</title></head><body><h1>Change LED state</h1><button onclick=\"request('/gpio/1')\">ON</button><button onclick=\"request('/gpio/0')\">OFF</button><script>const request=function(url){const xhr=new XMLHttpRequest();xhr.open('GET',url,true);xhr.onload=()=>{if(xhr.status>=200&&xhr.status<400){alert('Success:'+xhr.responseText);}else{alert('Error:'+xhr.responseText);}};xhr.onerror=function(err){alert(err.toString());};xhr.send();};</script></body></html>";
}

const char* not_found() {
  return "<!DOCTYPE html><html><head><script>window.location.href='/';</script></head><body><script>window.location.href='/';</script></body></html>";
}

const char* blink_led(String route) {
  int state = route == "/gpio/1" ? LED_STATE_ON : LED_STATE_OFF;

  digitalWrite(LED_COM, state);

  return state == LED_STATE_ON ? "ON" : "OFF";
}
	#include <ESP8266WiFi.h>

	#define Sprintf(data...) { \
	Serial.printf(data); \
	}

	#define INITIATE_LED(led) { \
	pinMode(led, OUTPUT); \
	digitalWrite(led, LED_STATE_ON); \
	}

	const char* ssid = "<WIFI SSID>";
	const char* password = "<WIFI PASS>";

	const int LED_COM = 2;
	const int LED_OTHER = 16;

	const int LED_STATE_ON = LOW;
	const int LED_STATE_OFF = HIGH;

	const char* HTTP_RESPONSE_OK = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
	const char* HTTP_RESPONSE_NOT_FOUND = "HTTP/1.1 404 Not Found\r\nContent-Type: text/html\r\nLocation: /\r\n\r\n";

	int last_blink = 0;
	bool blink_state = false;
	const int BLINK_INTERVAL = 500;

	WiFiServer server(80);

	void setup() {
	Serial.begin(115200);
	delay(10);

	INITIATE_LED(LED_COM);
	INITIATE_LED(LED_OTHER);

	Sprintf("\r\n\r\nConnecting to %s\r\n", ssid);

	WiFi.mode(WIFI_STA);
	WiFi.begin(ssid, password);

	while (WiFi.status() != WL_CONNECTED) {
	delay(500);
	Sprintf(".");
	}

	Sprintf("\r\n\r\nWiFi connected");

	server.begin();

	Sprintf("Server started\r\n");

	Serial.println(WiFi.localIP());
	}

	void loop() {
	blink_led_other();

	WiFiClient client = server.available();
	if (!client) {
	return;
	}

	// Wait until the client sends some data
	Serial.println("new client");
	while (!client.available()) {
	delay(1);
	}

	String req = client.readStringUntil('\r');
	Serial.println(req);
	client.flush();

	int routeStart = req.indexOf(" ") + 1;
	int routeEnd = req.indexOf(" ", routeStart);
	String route = req.substring(routeStart, routeEnd);

	Serial.print("Route: ");
	Serial.print(route);
	Sprintf(" => (%i)\r\n", route.length());

	client.flush();

	if (route == "/") {
	client.print(HTTP_RESPONSE_OK);
	client.print(index());
	} else if (route == "/gpio/1" \|\| route == "/gpio/0") {
	client.print(HTTP_RESPONSE_OK);
	client.print(blink_led(route));
	} else {
	client.print(HTTP_RESPONSE_NOT_FOUND);
	client.print(not_found());
	}

	client.flush();

	delay(1);

	Sprintf("Client disonnected\r\n");
	}

	void blink_led_other() {
	int now = millis();

	if ((now - last_blink) > BLINK_INTERVAL) {
	blink_state = !blink_state;

	last_blink = now;

	// Sprintf("Led state: %s\r\n", blink_state ? "ON" : "OFF");

	digitalWrite(LED_OTHER, blink_state ? LED_STATE_ON : LED_STATE_OFF);
	}
	}

	const char* index() {
	return "<!DOCTYPE html><html><head><meta charset=\"utf-8\"><meta name=\"viewport\" content=\"width=device-width\"><title>ESP8266 RULES</title></head><body><h1>Change LED state</h1><button onclick=\"request('/gpio/1')\">ON</button><button onclick=\"request('/gpio/0')\">OFF</button><script>const request=function(url){const xhr=new XMLHttpRequest();xhr.open('GET',url,true);xhr.onload=()=>{if(xhr.status>=200&&xhr.status<400){alert('Success:'+xhr.responseText);}else{alert('Error:'+xhr.responseText);}};xhr.onerror=function(err){alert(err.toString());};xhr.send();};</script></body></html>";
	}

	const char* not_found() {
	return "<!DOCTYPE html><html><head><script>window.location.href='/';</script></head><body><script>window.location.href='/';</script></body></html>";
	}

	const char* blink_led(String route) {
	int state = route == "/gpio/1" ? LED_STATE_ON : LED_STATE_OFF;

	digitalWrite(LED_COM, state);

	return state == LED_STATE_ON ? "ON" : "OFF";
	}