ESP8266 LED WEB

import network import socket from machine import Pin import time import errno # untuk kode error SSID = "SANGATLUCU" PASSWORD = "SANGATLUXU" # LED onboard ESP8266 (D4 / GPIO2) = active LOW led = Pin(2, Pin.OUT) led.value(1) # awal MATI (active LOW) # LED eksternal (umumnya active HIGH) led3 = Pin(15, Pin.OUT) # GPIO15 (D8) led4 = Pin(13, Pin.OUT) # GPIO13 (D7) led3.value(0) # awal MATI led4.value(0) # awal MATI def connect_wifi(): wlan = network.WLAN(network.STA_IF) wlan.active(True) if not wlan.isconnected(): print("Connecting to WiFi...") wlan.connect(SSID, PASSWORD) while not wlan.isconnected(): time.sleep(0.5) print(".", end="") print("\nWiFi connected!") ip = wlan.ifconfig()[0] print("IP address:", ip) return ip def web_page(): # status LED onboard (active LOW) state = "ON" if led.value() == 0 else "OFF" # status LED eksternal (active HIGH) state1 = "ON" if led3.value() == 1 else "OFF" state2 = "ON" if led4.value() == 1 else "OFF" html = f""" ESP8266 LED WEB

Kontrol LED ESP8266 via Web

Status LED_biru: {state}

Status LED_hijau: {state1}

Status LED_kuning: {state2}

""" return html # ----- Fungsi anti-EADDRINUSE ----- def start_server(preferred_port=80): global s # coba tutup server lama kalau masih ada try: s.close() except: pass # coba bind port yang diinginkan for port in (preferred_port, 8080): try: addr = socket.getaddrinfo("0.0.0.0", port)[0][-1] s = socket.socket() # reuse address biar port nggak nyangkut s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind(addr) s.listen(1) print("Server listening on port:", port) return port except OSError as e: # kalau EADDRINUSE, coba port berikutnya if e.args and e.args[0] == errno.EADDRINUSE: print("Port", port, "in use, trying another port...") try: s.close() except: pass continue else: # error lain, lempar lagi biar kelihatan raise e # kalau dua-duanya gagal raise OSError("Cannot bind to port 80 or 8080") ip = connect_wifi() PORT = start_server(80) print("Web server ready. Open browser to:") print("http://{}:{}/".format(ip, PORT) if PORT != 80 else "http://{}/".format(ip)) while True: conn = None try: conn, addr = s.accept() try: request = conn.recv(1024) if not request: conn.close() continue request = request.decode() except OSError as e: # ECONNRESET biasanya terjadi di recv if e.args and e.args[0] == errno.ECONNRESET: # client reset koneksi, abaikan saja continue else: raise e first_line = request.split("\r\n")[0] path = first_line.split(" ")[1] # LED biru (onboard, active LOW) if path == "/on": led.value(0) # nyala elif path == "/off": led.value(1) # mati # LED hijau (GPIO15, active HIGH) elif path == "/pin1_on": led3.value(1) elif path == "/pin1_off": led3.value(0) # LED kuning (GPIO13, active HIGH) elif path == "/pin2_on": led4.value(1) elif path == "/pin2_off": led4.value(0) response = web_page() try: conn.send("HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n") conn.sendall(response) except OSError as e: # ECONNRESET bisa juga terjadi saat send if e.args and e.args[0] == errno.ECONNRESET: continue else: raise e except Exception as e: print("Error:", e) finally: if conn: try: conn.close() except: pass