157 lines
4.6 KiB
C++
157 lines
4.6 KiB
C++
#include <SoftwareSerial.h>
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SoftwareSerial esp8266(4, 5); // RX, TX
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// صفحه پیش‌فرض HTML
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const char* HTML_PAGE = "<!DOCTYPE html><html><body><h2>Hello from ESP8266</h2></body></html>";
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void setup() {
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Serial.begin(9600);
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esp8266.begin(9600);
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delay(2000); // آماده‌سازی ESP
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// تنظیمات اولیه ESP8266
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sendCommand("AT", "OK", 2000);
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sendCommand("ATE0", "OK", 2000);
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sendCommand("AT+CWMODE=2", "OK", 2000);
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sendCommand("AT+CWSAP=\"ESP8266_AP\",\"12345678\",1,0", "OK", 5000);
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sendCommand("AT+CIPMUX=1", "OK", 3000);
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sendCommand("AT+CIPSERVER=1,80", "OK", 3000);
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Serial.println(F("ESP8266 Ready. Connect to SSID: ESP8266_AP, Pass: 12345678"));
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Serial.println(F("Then open http://192.168.4.1/ in your browser"));
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}
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void loop() {
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if (esp8266.available()) {
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String line = esp8266.readStringUntil('\n');
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line.trim();
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if (line.length() == 0) return;
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Serial.println("[ESP8266] " + line);
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if (line.startsWith("+IPD,")) {
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int len = 0;
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int linkId = parseIPDLine(line, len);
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if (linkId < 0) {
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Serial.println("Failed to parse IPD line.");
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return;
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}
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drainPayload(len);
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// فراخوانی تابع پردازش و ارسال پاسخ
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processAndSend(linkId, line);
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}
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}
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}
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// =================== توابع کمکی ===================
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// تابع پردازش داده و ارسال پاسخ به کلاینت
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void processAndSend(int linkId, const String &requestLine) {
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String html;
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// بررسی پارامتر صفحه در URL
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if (requestLine.indexOf("GET /?page=") != -1) {
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int start = requestLine.indexOf("GET /?page=") + 10;
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int end = requestLine.indexOf(" ", start);
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int pageNum = requestLine.substring(start, end).toInt();
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switch (pageNum) {
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case 1:
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html = "<!DOCTYPE html><html><body><h2>صفحه ۱</h2></body></html>";
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break;
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case 2:
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html = "<!DOCTYPE html><html><body><h2>صفحه ۲</h2></body></html>";
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break;
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case 3:
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html = "<!DOCTYPE html><html><body><h2>صفحه ۳</h2></body></html>";
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break;
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default:
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html = "<!DOCTYPE html><html><body><h2>صفحه پیش‌فرض</h2></body></html>";
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break;
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}
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} else {
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html = HTML_PAGE; // صفحه پیش‌فرض
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}
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// ساخت پاسخ HTTP
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String response = "HTTP/1.1 200 OK\r\n";
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response += "Content-Type: text/html\r\n";
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response += "Content-Length: " + String(html.length()) + "\r\n";
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response += "Connection: close\r\n\r\n";
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response += html;
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// ارسال پاسخ
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String cmd = "AT+CIPSEND=" + String(linkId) + "," + String(response.length());
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if (sendCommand(cmd, ">", 5000)) {
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esp8266.print(response);
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if (waitFor("SEND OK", 5000)) {
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Serial.println("Response sent to client.");
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} else {
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Serial.println("SEND OK not received (timeout).");
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}
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} else {
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Serial.println("CIPSEND prompt not received (timeout).");
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}
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// بستن کانکشن
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String closeCmd = "AT+CIPCLOSE=" + String(linkId);
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sendCommand(closeCmd, "OK", 2000);
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}
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// استخراج linkId و len از خط +IPD
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int parseIPDLine(const String& line, int &lenOut) {
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int ipdPos = line.indexOf("+IPD,");
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if (ipdPos == -1) return -1;
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int firstComma = line.indexOf(',', ipdPos + 4);
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int secondComma = line.indexOf(',', firstComma + 1);
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if (firstComma == -1 || secondComma == -1) return -1;
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int colon = line.indexOf(':', secondComma + 1);
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if (colon == -1) {
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lenOut = line.substring(secondComma + 1).toInt();
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return line.substring(ipdPos + 4, firstComma).toInt();
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} else {
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lenOut = line.substring(firstComma + 1, secondComma).toInt();
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return line.substring(ipdPos + 4, firstComma).toInt();
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}
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}
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// پاک‌سازی payload بعد از +IPD
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void drainPayload(int len) {
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unsigned long t0 = millis();
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int remaining = len;
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while (millis() - t0 < 1000 && remaining > 0) {
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if (esp8266.available()) {
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esp8266.read();
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remaining--;
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}
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}
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}
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// ارسال فرمان AT و انتظار ACK
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bool sendCommand(const String& cmd, const char* ack, unsigned long timeout) {
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esp8266.println(cmd);
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return waitFor(ack, timeout);
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}
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// منتظر بودن برای وجود یک ACK/کلمه کلیدی تا مهلت معین
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bool waitFor(const char* target, unsigned long timeout) {
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unsigned long start = millis();
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String buffer = "";
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while (millis() - start < timeout) {
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while (esp8266.available()) {
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char c = esp8266.read();
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buffer += c;
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if (buffer.indexOf(target) != -1) return true;
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}
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}
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Serial.print("Timeout waiting for: "); Serial.println(target);
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return false;
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}
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