Web Server NeoPixel RGB
Sample Code with CSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205 | # Code taken from https://www.cnx-software.com/2022/07/03/getting-started-with-wifi-on-raspberry-pi-pico-w-board/
from machine import Pin
from neopixel import NeoPixel
import network
import socket
from time import sleep
import secrets
NEOPIXEL_PIN = 0
NUMBER_PIXELS = 30
PERCENT_COLOR_WHEEL = round(255/NUMBER_PIXELS)
# setup
strip = NeoPixel(machine.Pin(NEOPIXEL_PIN), NUMBER_PIXELS)
red = (255,0,0)
green = (0,255,0)
blue = (0,0,255)
off = (0,0,0)
def set_color(color):
for i in range(0, NUMBER_PIXELS):
strip[i] = color
strip.write()
# Select the onboard LED
led = machine.Pin("LED", machine.Pin.OUT)
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(secrets.SSID, secrets.PASSWORD)
stateis = "LED is OFF"
html = """<!DOCTYPE html>
<html>
<head>
<title>Web Server On Pico W </title>
<style>
body {
font-size:24px;
font-family:'Helvetica'
}
.button-row {
display: inline-block;
padding: 2px 3px 6px 3px;
margin: 5px;
}
a:visited {
color: yellow;
background-color: transparent;
text-decoration: none;
}
a:hover {
color: orange;
background-color: transparent;
text-decoration: none;
}
.button {
font: bold 16px Arial;
text-decoration: none;
padding: 2px 6px 2px 6px;
border-top: 2px solid #CCCCCC;
border-right: 2px solid #333333;
border-bottom: 2px solid #333333;
border-left: 2px solid #CCCCCC;
}
</style>
</head>
<body>
<h1>Pico Wireless Web Server</h1>
<p>Onboard LED State: %s</p>
<div class="buttons">
<span class="button-row" style="background-color:gray">
<a href="/light/on" class="button">Turn Onboard LED On</a>
<a href="/light/off" class="button">Turn Onboard LED Off</a>
</span><br/>
<span class="button-row" style="background-color:red">
<a href="/led/red/on" class="button">Red LED On</a>
<a href="/led/red/off" class="button">Red LED Off</a>
</span><br/>
<span class="button-row" style="background-color:green">
<a href="/led/green/on" class="button">Green LED On</a>
<a href="/led/green/off" class="button">Green LED Off</a>
</span><br/>
<span class="button-row" style="background-color:blue">
<a href="/led/blue/on" class="button">Blue LED On</a>
<a href="/led/blue/off" class="button">Blue LED Off</a>
</span>
</div>
</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...')
sleep(1)
led.toggle()
# Handle connection error
if wlan.status() != 3:
raise RuntimeError('network connection failed')
else:
print('We are connected to WiFI access point:', secrets.SSID)
status = wlan.ifconfig()
print( 'The IP address of the pico W is:', status[0] )
# Open socket
addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1]
# print('addr:', addr)
s = socket.socket()
# this prevents the "OSError: [Errno 98] EADDRINUSE" error for repeated tests
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
# print('Got a sockert. s:', s)
#if not addr:
# print('going to run bind to addr on the socket')
s.bind(addr)
# print('going to run listen(1) on socket')
s.listen(1)
# print('listening on', addr)
# Listen for connections
while True:
try:
cl, addr = s.accept()
# print('client connected from', addr)
request = cl.recv(1024)
# print(request)
request = str(request)
led_on = request.find('/light/on')
led_off = request.find('/light/off')
red_on = request.find('/led/red/on')
red_off = request.find('/led/red/off')
green_on = request.find('/led/green/on')
green_off = request.find('/led/green/off')
blue_on = request.find('/led/blue/on')
blue_off = request.find('/led/blue/off')
# print( 'led on = ' + str(led_on))
# print( 'led off = ' + str(led_off))
if led_on == 6:
print("led on")
led.on()
stateis = "LED is ON"
if led_off == 6:
print("led off")
led.off()
stateis = "LED is OFF"
if red_on == 6:
print("red on")
set_color(red)
if red_off == 6:
print("red off")
set_color(off)
if green_on == 6:
print("green on")
set_color(green)
if green_off == 6:
print("green off")
set_color(off)
if blue_on == 6:
print("blue on")
set_color(blue)
if blue_off == 6:
print("blue off")
set_color(off)
# generate the we page with the stateis as a parameter
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()
s.close()
print('connection closed')
|
References
Clear Fix Floating Boxes Example
https://www.w3schools.com/css/tryit.asp?filename=trycss_float_boxes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 | <style>
* {
box-sizing: border-box;
}
.box {
float: left;
width: 33.33%;
padding: 30px 20px;
}
.clearfix::after {
content: "";
clear: both;
display: table;
}
</style>
</head>
<body>
<h2>Grid of Boxes</h2>
<p>Float boxes side by side:</p>
<div class="clearfix">
<div class="box" style="background-color:silver">
<p>Some text inside the box.</p>
</div>
<div class="box" style="background-color:gray">
<p>Some text inside the box.</p>
</div>
</div>
|