Closed
Description
Starting server on Pico W errors out on server.start(<str:ip>,<int:port>) when running on CircuitPython 9.0.0 with 9.x httpserver library. Error was: OSError: [Errno 95] EOPNOTSUPP. Same code runs on 8.2.10 without issue with 8.x library.
Steps to recreate:
- Install CircuitPython 9.0.0 on Pico W
- Load adafruit_httpserver 9.x library to /<path_to_drive>/CIRCUITPYTHON/lib
- Run code.py
Code adapted from Adafruit Pico W HTTP Server (https://learn.adafruit.com/pico-w-http-server-with-circuitpython/code-the-pico-w-http-server):
code.py
import os
import time
import ipaddress
import wifi
import socketpool
import busio
import board
import microcontroller
import terminalio
from digitalio import DigitalInOut, Direction
from adafruit_httpserver import Server, Request, Response, POST
# onboard LED setup
led = DigitalInOut(board.LED)
led.direction = Direction.OUTPUT
led.value = False
# connect to network
print()
print("Connecting to WiFi")
connect_text = "Connecting..."
# set static IP address
ipv4 = ipaddress.IPv4Address("192.168.1.25")
netmask = ipaddress.IPv4Address("255.255.255.0")
gateway = ipaddress.IPv4Address("192.168.1.1")
wifi.radio.set_ipv4_address(ipv4=ipv4,netmask=netmask,gateway=gateway)
# connect to your SSID
wifi.radio.connect(os.getenv('CIRCUITPY_WIFI_SSID'), os.getenv('CIRCUITPY_WIFI_PASSWORD'))
print("Connected to WiFi")
pool = socketpool.SocketPool(wifi.radio)
server = Server(pool, "/static", debug=True)
# variables for HTML
# font for HTML
font_family = "monospace"
# the HTML script
# setup as an f string
# this way, can insert string variables from code.py directly
# of note, use {{ and }} if something from html *actually* needs to be in brackets
# i.e. CSS style formatting
def webpage():
html = f"""
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-type" content="text/html;charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
html{{font-family: {font_family}; background-color: lightgrey;
display:inline-block; margin: 0px auto; text-align: center;}}
h1{{color: deeppink; width: 200; word-wrap: break-word; padding: 2vh; font-size: 35px;}}
p{{font-size: 1.5rem; width: 200; word-wrap: break-word;}}
.button{{font-family: {font_family};display: inline-block;
background-color: black; border: none;
border-radius: 4px; color: white; padding: 16px 40px;
text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}}
p.dotted {{margin: auto;
width: 75%; font-size: 25px; text-align: center;}}
</style>
</head>
<body>
<title>Pico W HTTP Server</title>
<h1>Pico W HTTP Server</h1>
<br>
<p class="dotted">This is a Pico W running an HTTP server with CircuitPython.</p>
<br>
<h1>Control the LED on the Pico W with these buttons:</h1><br>
<form accept-charset="utf-8" method="POST">
<button class="button" name="LED ON" value="ON" type="submit">LED ON</button></a></p></form>
<p><form accept-charset="utf-8" method="POST">
<button class="button" name="LED OFF" value="OFF" type="submit">LED OFF</button></a></p></form>
</body></html>
"""
return html
# route default static IP
@server.route("/")
def base(request: Request): # pylint: disable=unused-argument
# serve the HTML f string
# with content type text/html
return Response(request, f"{webpage()}", content_type='text/html')
# if a button is pressed on the site
@server.route("/", POST)
def buttonpress(request: Request):
# get the raw text
raw_text = request.raw_request.decode("utf8")
print(raw_text)
# if the led on button was pressed
if "ON" in raw_text:
# turn on the onboard LED
led.value = True
# if the led off button was pressed
if "OFF" in raw_text:
# turn the onboard LED off
led.value = False
# reload site
return Response(request, f"{webpage()}", content_type='text/html')
print("starting server..")
# startup the server
try:
server.start(str(wifi.radio.ipv4_address), 80)
print("Listening on http://%s:80" % wifi.radio.ipv4_address)
# if the server fails to begin, restart the pico w
except Exception as e:
print(f'Encountered exception.\n{e}\n')
time.sleep(5)
# print("restarting..")
# microcontroller.reset()
ping_address = ipaddress.ip_address("8.8.4.4")
clock = time.monotonic() # time.monotonic() holder for server ping
while True:
try:
# every 30 seconds, ping server & update temp reading
if (clock + 30) < time.monotonic():
if wifi.radio.ping(ping_address) is None:
print("lost connection")
else:
print("connected")
clock = time.monotonic()
# poll the server for incoming/outgoing requests
server.poll()
# pylint: disable=broad-except
except Exception as e:
print(e)
continue
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