I have a Wemos D1 mini v3 and I'm making cheap interactable lights for in the classroom using this. I have been following a tutorial from randomnerds trying to solve the problem of creating an HTTP request to make the lights wireless.
Link: https://randomnerdtutorials.com/esp32-esp8266-micropython-web-server/
The first part is all going fair and well! I can ping the ip being made from the boot.py:
try:
import usocket as socket
except:
import socket
from machine import Pin
import network
import esp
esp.osdebug(None)
import gc
gc.collect()
ssid = 'My SSID'
password = 'My Password'
station = network.WLAN(network.STA_IF)
station.active(True)
station.connect(ssid, password)
while station.isconnected() == False:
pass
print('Connection successful')
print(station.ifconfig())
led = Pin(2, Pin.OUT)
So yeah, this part works well. But it's the main.py I'm really struggling with. It's all going fine until I wanted to accept the connection of the socket. The program -kind of- holds itself while trying to accept the socket. Here is the code used in the tutorial:
def web_page():
if led.value() == 1:
gpio_state="ON"
else:
gpio_state="OFF"
html = """<html><head> <title>ESP Web Server</title> <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;}
h1{color: #0F3376; padding: 2vh;}p{font-size: 1.5rem;}.button{display: inline-block; background-color: #e7bd3b; border: none;
border-radius: 4px; color: white; padding: 16px 40px; text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}
.button2{background-color: #4286f4;}</style></head><body> <h1>ESP Web Server</h1>
<p>GPIO state: <strong>""" + gpio_state + """</strong></p><p><a href="/?led=on"><button class="button">ON</button></a></p>
<p><a href="/?led=off"><button class="button button2">OFF</button></a></p></body></html>"""
return html
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 80))
s.listen(5)
print('Listening to socket')
while True:
conn, addr = s.accept()
print('Got a connection from %s' % str(addr))
request = conn.recv(1024)
request = str(request)
print('Content = %s' % request)
led_on = request.find('/?led=on')
led_off = request.find('/?led=off')
if led_on == 6:
print('LED ON')
led.value(1)
if led_off == 6:
print('LED OFF')
led.value(0)
response = web_page()
conn.send('HTTP/1.1 200 OK\n')
conn.send('Content-Type: text/html\n')
conn.send('Connection: close\n\n')
conn.sendall(response)
conn.close()
The program seems to at least print 'Listening to socket'. But after that, nothing happens (even after half an hour). So, I'm asking you wonderful people, what am I doing wrong with this socket module? Or are there any good alternatives using the wifi module with sending data?
