WIFIでRaspberry Pi Pico WのLEDをON OFF

Raspberry Pi Pico Wを無線LANモジュールでネットワークに接続してLEDをON OFFする

Raspberry Pi Pico Wを無線LANモジュールでネットワークに接続してLEDをON OFFする

Raspberry Pi Pico Wの無線LANモジュールでネットワークに接続します。その後ブラウザから本体のLEDをオン・オフさせます。

Raspberry Pi Pico W

無線LANモジュールは「CYW43439」です。このモジュールは、Wi-FiとBluetoothの機能を統合しており、IoTデバイスや組み込みアプリケーションに広く使用されています。

シルバーのシールドで覆われているチップがCYW43439です。

MicroPythonプログラム

import time

import network

import socket

from machine import Pin

led = Pin("LED", machine.Pin.OUT)

ledState = 'LED State Unknown'

#自宅Wi-FiのSSIDとパスワードを入力

ssid = 'ssid'

password = 'password'

wlan = network.WLAN(network.STA_IF)

wlan.active(True)

wlan.connect(ssid, password)

html = """<!DOCTYPE html><html>

.buttonGreen { background-color: #4CAF50; border: 2px solid #000000;; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; }

.buttonRed { background-color: #D11D53; border: 2px solid #000000;; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; }

text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}

</style></head>

<body><center><h1>Raspberry Pi Pico W</h1></center><br><br>

</form>

"""

# Wait for connect or fail

max_wait = 10

while max_wait > 0:

if wlan.status() < 0 or wlan.status() >= 3:

break

max_wait -= 1

print('waiting for connection...')

time.sleep(1)

# Handle connection error

if wlan.status() != 3:

raise RuntimeError('network connection failed')

else:

print('Connected')

status = wlan.ifconfig()

print( 'ip = ' + status[0] )

# Open socket

addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1]

s = socket.socket()

s.bind(addr)

s.listen(1)

print('listening on', addr)

# Listen for connections, serve client

while True:

try:

cl, addr = s.accept()

print('client connected from', addr)

request = cl.recv(1024)

print("request:")

print(request)

request = str(request)

led_on = request.find('led=on')

led_off = request.find('led=off')

print( 'led on = ' + str(led_on))

print( 'led off = ' + str(led_off))

if led_on == 8:

print("led on")

led.value(1)

if led_off == 8:

print("led off")

led.value(0)

ledState = "LED is OFF" if led.value() == 0 else "LED is ON" # a compact if-else statement

# Create and send response

stateis = ledState

response = html % stateis

cl.send('HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n')

cl.send(response)

cl.close()

except OSError as e:

cl.close()

print('connection closed')

import time import network import socket from machine import Pin led = Pin("LED", machine.Pin.OUT) ledState = 'LED State Unknown' #自宅Wi-FiのSSIDとパスワードを入力 ssid = 'ssid' password = 'password' wlan = network.WLAN(network.STA_IF) wlan.active(True) wlan.connect(ssid, password) html = """<!DOCTYPE html><html> <head><meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="icon" href="data:,"> <style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;} .buttonGreen { background-color: #4CAF50; border: 2px solid #000000;; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; } .buttonRed { background-color: #D11D53; border: 2px solid #000000;; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; } text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;} </style></head> <body><center><h1>Raspberry Pi Pico W</h1></center><br><br> <form><center> <center> <button class="buttonGreen" name="led" value="on" type="submit">LED ON</button> <br><br> <center> <button class="buttonRed" name="led" value="off" type="submit">LED OFF</button> </form> <br><br> <br><br> <p>%s<p></body></html> """ # Wait for connect or fail max_wait = 10 while max_wait > 0: if wlan.status() < 0 or wlan.status() >= 3: break max_wait -= 1 print('waiting for connection...') time.sleep(1) # Handle connection error if wlan.status() != 3: raise RuntimeError('network connection failed') else: print('Connected') status = wlan.ifconfig() print( 'ip = ' + status[0] ) # Open socket addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1] s = socket.socket() s.bind(addr) s.listen(1) print('listening on', addr) # Listen for connections, serve client while True: try: cl, addr = s.accept() print('client connected from', addr) request = cl.recv(1024) print("request:") print(request) request = str(request) led_on = request.find('led=on') led_off = request.find('led=off') print( 'led on = ' + str(led_on)) print( 'led off = ' + str(led_off)) if led_on == 8: print("led on") led.value(1) if led_off == 8: print("led off") led.value(0) ledState = "LED is OFF" if led.value() == 0 else "LED is ON" # a compact if-else statement # Create and send response stateis = ledState response = html % stateis cl.send('HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n') cl.send(response) cl.close() except OSError as e: cl.close() print('connection closed')

import time
import network
import socket
from machine import Pin

led = Pin("LED", machine.Pin.OUT)
ledState = 'LED State Unknown'

#自宅Wi-FiのSSIDとパスワードを入力
ssid = 'ssid'
password = 'password'

wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(ssid, password)

html = """<!DOCTYPE html><html>
<head><meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" href="data:,">
<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}
.buttonGreen { background-color: #4CAF50; border: 2px solid #000000;; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; }
.buttonRed { background-color: #D11D53; border: 2px solid #000000;; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; }
text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}
</style></head>
<body><center><h1>Raspberry Pi Pico W</h1></center><br><br>
<form><center>
<center> <button class="buttonGreen" name="led" value="on" type="submit">LED ON</button>
<br><br>
<center> <button class="buttonRed" name="led" value="off" type="submit">LED OFF</button>
</form>
<br><br>
<br><br>
<p>%s<p></body></html>
"""

# Wait for connect or fail
max_wait = 10
while max_wait > 0:
    if wlan.status() < 0 or wlan.status() >= 3:
        break
    max_wait -= 1
    print('waiting for connection...')
    time.sleep(1)
    
# Handle connection error
if wlan.status() != 3:
    raise RuntimeError('network connection failed')
else:
    print('Connected')
    status = wlan.ifconfig()
    print( 'ip = ' + status[0] )
    
    
# Open socket
addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1]
s = socket.socket()
s.bind(addr)
s.listen(1)
print('listening on', addr)

# Listen for connections, serve client
while True:
    try:       
        cl, addr = s.accept()
        print('client connected from', addr)
        request = cl.recv(1024)
        print("request:")
        print(request)
        request = str(request)
        led_on = request.find('led=on')
        led_off = request.find('led=off')
        
        print( 'led on = ' + str(led_on))
        print( 'led off = ' + str(led_off))
        
        if led_on == 8:
            print("led on")
            led.value(1)
        if led_off == 8:
            print("led off")
            led.value(0)
        
        ledState = "LED is OFF" if led.value() == 0 else "LED is ON" # a compact if-else statement
        
        # Create and send response
        stateis = ledState
        response = html % stateis
        cl.send('HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n')
        cl.send(response)
        cl.close()
        
    except OSError as e:
        cl.close()
        print('connection closed')