Raspberry Pi Pico WのWi-Fi入門：MicroPythonでWebサーバーを作る

1# wifi.py: Pico W'ye bu adla kaydet / save it to the Pico W with this name
2import network
3import time
4
5SSID = "AgAdi"            # Wi-Fi adın / your Wi-Fi name
6PASSWORD = "Sifre123"     # Wi-Fi şifren / your Wi-Fi password
7HOSTNAME = "picow"        # http://picow.local adresi için / for http://picow.local
8
9STATUS = {
10    0: "Boşta / idle",
11    1: "Ağa katılıyor / joining",
12    2: "IP bekleniyor / waiting for IP",
13    3: "Bağlandı / connected",
14    -1: "Bağlantı başarısız / connection failed",
15    -2: "Ağ bulunamadı / network not found",
16    -3: "Şifre hatalı / wrong password",
17}
18
19
20def connect(timeout=20):
21    network.country("TR")             # ülke kodu / country code
22    network.hostname(HOSTNAME)        # ağdaki adı / name on the network
23    wlan = network.WLAN(network.WLAN.IF_STA)
24    wlan.active(True)
25    wlan.config(pm=network.WLAN.PM_NONE)   # güç tasarrufunu kapat / disable power saving
26    if not wlan.isconnected():
27        wlan.connect(SSID, PASSWORD)
28        for _ in range(timeout):
29            code = wlan.status()
30            print(code, STATUS.get(code, "?"))
31            if code < 0 or code == 3:
32                break
33            time.sleep(1)
34    if wlan.status() != 3:
35        raise RuntimeError("Wi-Fi: " + STATUS.get(wlan.status(), "?"))
36    print("IP:", wlan.ifconfig()[0])
37    return wlan
38
39
40if __name__ == "__main__":
41    connect()

1import network
2
3wlan = network.WLAN(network.WLAN.IF_STA)
4wlan.active(True)
5for ssid, bssid, channel, rssi, security, hidden in wlan.scan():
6    print(ssid.decode(), "| kanal / channel:", channel, "| RSSI:", rssi, "dBm")

1import socket
2from machine import Pin
3import wifi
4
5wlan = wifi.connect()
6led = Pin("LED", Pin.OUT)              # Pico W dahili LED / Pico W onboard LED
7led_on = False
8
9
10def page(on):
11    state = "AÇIK / ON" if on else "KAPALI / OFF"
12    return """<!DOCTYPE html>
13<html><head><meta charset="utf-8">
14<meta name="viewport" content="width=device-width, initial-scale=1">
15<title>Pico W LED</title></head>
16<body style="font-family:sans-serif;text-align:center">
17<h1>Pico W LED</h1>
18<p>Durum / State: <b>""" + state + """</b></p>
19<p><a href="/on"><button style="font-size:24px">AÇ / ON</button></a>
20<a href="/off"><button style="font-size:24px">KAPAT / OFF</button></a></p>
21</body></html>"""
22
23
24addr = socket.getaddrinfo("0.0.0.0", 80)[0][-1]
25server = socket.socket()
26server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)   # EADDRINUSE hatasını önler / prevents EADDRINUSE
27server.bind(addr)
28server.listen(2)
29print("Tarayıcıda aç / open in browser: http://" + wlan.ifconfig()[0])
30
31while True:
32    client, remote = server.accept()           # bir tarayıcı bekle / wait for a browser
33    try:
34        request = client.recv(1024)            # b"GET /on HTTP/1.1 ..."
35        parts = request.split(b" ")
36        path = parts[1] if len(parts) > 1 else b"/"
37        if path == b"/on":
38            led.on()
39            led_on = True
40        elif path == b"/off":
41            led.off()
42            led_on = False
43        if path in (b"/", b"/on", b"/off"):
44            client.sendall("HTTP/1.0 200 OK\r\nContent-Type: text/html; charset=utf-8\r\n\r\n")
45            client.sendall(page(led_on))
46        else:
47            client.sendall("HTTP/1.0 404 Not Found\r\n\r\n")   # ör. /favicon.ico / e.g. /favicon.ico
48    except OSError as e:
49        print("Bağlantı hatası / connection error:", e)
50    finally:
51        client.close()

1import asyncio
2import json
3import time
4from machine import ADC, Pin
5import wifi
6
7wlan = wifi.connect()
8sensor = ADC(4)                        # dahili sıcaklık sensörü / internal temperature sensor
9led = Pin("LED", Pin.OUT)
10start = time.time()
11readings = {"temp": 0, "rssi": 0, "uptime": 0}
12
13HTML = """<!DOCTYPE html>
14<html><head><meta charset="utf-8">
15<meta name="viewport" content="width=device-width, initial-scale=1">
16<title>Pico W</title></head>
17<body style="font-family:sans-serif;text-align:center">
18<h1>Pico W</h1>
19<p>Sıcaklık / Temperature: <b id="t">-</b> °C</p>
20<p>Wi-Fi sinyali / signal: <b id="r">-</b> dBm</p>
21<p>Çalışma süresi / uptime: <b id="u">-</b> s</p>
22<script>
23async function update() {
24  try {
25    const d = await (await fetch("/data")).json();
26    document.getElementById("t").textContent = d.temp;
27    document.getElementById("r").textContent = d.rssi;
28    document.getElementById("u").textContent = d.uptime;
29  } catch (e) {}
30}
31update();
32setInterval(update, 2000);
33</script>
34</body></html>"""
35
36
37def read_temp():
38    volts = sensor.read_u16() * 3.3 / 65535
39    return round(27 - (volts - 0.706) / 0.001721, 1)
40
41
42async def measure():
43    while True:
44        readings["temp"] = read_temp()
45        readings["rssi"] = wlan.status("rssi")      # yalnız STA modunda / STA mode only
46        readings["uptime"] = time.time() - start
47        led.toggle()                                # kalp atışı / heartbeat
48        await asyncio.sleep(2)
49
50
51async def handle(reader, writer):
52    try:
53        line = await reader.readline()              # b"GET /data HTTP/1.1"
54        while True:                                 # başlıkları atla / skip the headers
55            header = await reader.readline()
56            if header in (b"\r\n", b""):
57                break
58        parts = line.split(b" ")
59        path = parts[1] if len(parts) > 1 else b"/"
60        if path == b"/":
61            writer.write(b"HTTP/1.0 200 OK\r\nContent-Type: text/html; charset=utf-8\r\n\r\n")
62            writer.write(HTML.encode())
63        elif path == b"/data":
64            writer.write(b"HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n")
65            writer.write(json.dumps(readings).encode())
66        else:
67            writer.write(b"HTTP/1.0 404 Not Found\r\n\r\n")
68        await writer.drain()
69    except OSError as e:
70        print("Bağlantı hatası / connection error:", e)
71    finally:
72        writer.close()
73        await writer.wait_closed()
74
75
76async def main():
77    await asyncio.start_server(handle, "0.0.0.0", 80)
78    print("Tarayıcıda aç / open in browser: http://" + wlan.ifconfig()[0])
79    await measure()
80
81
82asyncio.run(main())

1import dht
2from machine import Pin
3
4dht_sensor = dht.DHT22(Pin(15))        # DATA ucu GP15'te / DATA pin on GP15
5
6
7def read_sensor():
8    try:
9        dht_sensor.measure()            # ölçümü başlat / trigger a reading
10        readings["temp"] = dht_sensor.temperature()   # °C
11        readings["hum"] = dht_sensor.humidity()       # % bağıl nem / % relative humidity
12    except OSError as e:
13        print("DHT22 okunamadı / read failed:", e)

1import requests
2import wifi
3
4wifi.connect()
5
6# İstanbul; kendi konumunu yaz / Istanbul; put your own location
7LAT, LON = 41.01, 28.98
8URL = ("https://api.open-meteo.com/v1/forecast?latitude={}&longitude={}"
9       "&current=temperature_2m,relative_humidity_2m,wind_speed_10m").format(LAT, LON)
10
11response = requests.get(URL)
12try:
13    if response.status_code == 200:
14        current = response.json()["current"]
15        print("Sıcaklık / temperature:", current["temperature_2m"], "°C")
16        print("Nem / humidity:", current["relative_humidity_2m"], "%")
17        print("Rüzgâr / wind:", current["wind_speed_10m"], "km/h")
18    else:
19        print("HTTP hatası / HTTP error:", response.status_code)
20finally:
21    response.close()                   # soketi ve belleği serbest bırak / free the socket and memory

1import time
2import ntptime
3import wifi
4
5wifi.connect()
6ntptime.host = "pool.ntp.org"          # varsayılan sunucu / default server
7UTC_OFFSET = 3 * 3600                  # Türkiye UTC+3; kendi saat dilimini yaz / set your own time zone
8
9for attempt in range(5):
10    try:
11        ntptime.settime()              # dahili saati UTC'ye ayarlar / sets the internal clock to UTC
12        print("Saat ayarlandı / time set")
13        break
14    except OSError as e:
15        print("NTP hatası / NTP error:", e)
16        time.sleep(2)
17
18DAYS = ("Pzt/Mon", "Sal/Tue", "Çar/Wed", "Per/Thu", "Cum/Fri", "Cmt/Sat", "Paz/Sun")
19
20while True:
21    y, mo, d, h, mi, s, wd, yd = time.localtime(time.time() + UTC_OFFSET)
22    print("%02d.%02d.%d %s %02d:%02d:%02d" % (d, mo, y, DAYS[wd], h, mi, s))
23    time.sleep(1)

1import network
2
3ap = network.WLAN(network.WLAN.IF_AP)
4ap.config(ssid="PicoW-BlueGrays", password="bluegrays123")   # şifre en az 8 karakter / at least 8 characters
5ap.active(True)
6while not ap.active():
7    pass
8print("Ağ hazır / network ready:", ap.ifconfig()[0])          # genellikle 192.168.4.1 / usually 192.168.4.1

1#include <WiFi.h>
2#include <WebServer.h>
3#include <LEAmDNS.h>
4
5const char* ssid = "AgAdi";          // Wi-Fi adın / your Wi-Fi name
6const char* password = "Sifre123";   // Wi-Fi şifren / your Wi-Fi password
7
8WebServer server(80);
9bool ledOn = false;
10
11void sendPage() {
12  String html = "<!DOCTYPE html><html><head><meta charset='utf-8'>"
13                "<meta name='viewport' content='width=device-width, initial-scale=1'>"
14                "<title>Pico W</title></head>"
15                "<body style='font-family:sans-serif;text-align:center'><h1>Pico W LED</h1>";
16  html += "<p>Durum / State: <b>";
17  html += ledOn ? "AÇIK / ON" : "KAPALI / OFF";
18  html += "</b></p><p><a href='/on'><button>AÇ / ON</button></a> ";
19  html += "<a href='/off'><button>KAPAT / OFF</button></a></p>";
20  html += "<p>Sıcaklık / Temp: ";
21  html += String(analogReadTemp(), 1);   // dahili sensör / internal sensor
22  html += " °C</p></body></html>";
23  server.send(200, "text/html", html);
24}
25
26void setup() {
27  Serial.begin(115200);
28  pinMode(LED_BUILTIN, OUTPUT);          // Pico W'de kablosuz yongadaki LED / the LED on the wireless chip
29  WiFi.mode(WIFI_STA);
30  WiFi.begin(ssid, password);
31  while (WiFi.status() != WL_CONNECTED) {
32    delay(500);
33    Serial.print(".");
34  }
35  Serial.println();
36  Serial.print("IP: ");
37  Serial.println(WiFi.localIP());        // bu adresi telefonda aç / open this address on your phone
38
39  MDNS.begin("picow");                   // http://picow.local
40  server.on("/", sendPage);
41  server.on("/on", []() { ledOn = true;  digitalWrite(LED_BUILTIN, HIGH); sendPage(); });
42  server.on("/off", []() { ledOn = false; digitalWrite(LED_BUILTIN, LOW);  sendPage(); });
43  server.onNotFound([]() { server.send(404, "text/plain", "404"); });
44  server.begin();
45}
46
47void loop() {
48  server.handleClient();
49  MDNS.update();
50}