DHT11/12網路監測溫濕度計-micropython
tags: micropython dht11/12 webserver
DHT11/12單純測試參考頁面-
https://blairan-esp32-micropython.blogspot.com/2021/07/dht11dht12-micropython.html
WiFi聯網參考-https://blairan-esp32-micropython.blogspot.com/2021/07/wifi.html
完整程式碼
import dht
import network, socket
from machine import Pin
from time import sleep
ssid="---"
password="------"
STA=network.WLAN(network.STA_IF)
STA.active(True)
STA.connect(ssid, password)
while STA.isconnected()==False:
pass
print("The connected successful!")
print("IP: {}".format(STA.ifconfig()))
def readTempAndHumi():
global temp, humi
try:
sensor=dht.DHT11(Pin(4))
sensor.measure()
temp=sensor.temperature()
humi=sensor.humidity()
if (isinstance(temp, float) and isinstance(humi, float)) or (isinstance(temp, int) and isinstance(humi, int)):
measureResult="{},{}".format(temp, humi)
return measureResult
else:
return ("--")
except OSError as o:
print("--")
def Htmlpage():
html= """
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<style>
h1 {text-align: center; background-color: orange; margin-right:5px;}
dl { width: 320px; margin: 12px auto; }
dt {
font-size: 20pt; color: #444; background-color: #ddd;
margin: 6pt 0; padding: 6pt 12pt;
}
dd {
text-align: right; padding-right: 6pt;
}
.num { font-size: 36pt; color: dodgerblue; }
</style>
</head>
<body>
<p><h1>ESP32 DHT11/12</h1></p>
<dl>
<dt>Temp</dt>
<dd class=num>"""+str(temp)+"""°C</dd>
<dt>Humi</dt>
<dd class=num>"""+str(humi)+""" %</dd>
</dl>
</body>
</html>
"""
return html
s=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 80))
s.listen(5)
while True:
conn, addr = s.accept()
print('Got a connection from %s' % str(addr))
req = conn.recv(1024)
print('Content = %s' % str(req))
sensor_reading = readTempAndHumi()
print(sensor_reading)
respone = Htmlpage()
conn.send("http/1.1 200 OK\n")
conn.send("Content-Type: text/html; charset='utf-8'\n")
conn.send("Connection: close\n\n")
conn.sendall(respone)
conn.close()
解析
**_載入dht,wifi,端口,pin和時間模組_**
import dht
import network, socket
from machine import Pin
from time import sleep
這個部份是設制WiFi的流程
ssid="基地台名稱"
password="基地台密碼"
STA=network.WLAN(network.STA_IF)
STA.active(True)
STA.connect(ssid, password)
while STA.isconnected()==False:
pass
print("The connected successful!")
print("IP: {}".format(STA.ifconfig()))
讀取溫溼度的函式
def readTempAndHumi():
global temp, humi
try:
sensor=dht.DHT11(Pin(4))
sensor.measure()
temp=sensor.temperature()
humi=sensor.humidity()
if (isinstance(temp, float) and isinstance(humi, float)) or (isinstance(temp, int) and isinstance(humi, int)):
measureResult="{},{}".format(temp, humi)
return measureResult
else:
return ("--")
except OSError as o:
print("--")
網頁前端的布置,記得要讓其讀取時可返回(return)
其中須注意的是讓溫溼度的值可以正顯示要使用“””+str(溫/溼度變數)+”””
def Htmlpage():
html= """
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<style>
h1 {text-align: center; background-color: orange; margin-right:5px;}
dl { width: 320px; margin: 12px auto; }
dt {
font-size: 20pt; color: #444; background-color: #ddd;
margin: 6pt 0; padding: 6pt 12pt;
}
dd {
text-align: right; padding-right: 6pt;
}
.num { font-size: 36pt; color: dodgerblue; }
</style>
</head>
<body>
<p><h1>ESP32 DHT11/12</h1></p>
<dl>
<dt>Temp</dt>
<dd class=num>"""+str(temp)+"""°C</dd>
<dt>Humi</dt>
<dd class=num>"""+str(humi)+""" %</dd>
</dl>
</body>
</html>
"""
return html
設制監聽套接端口
函式參考-我的micropython函式筆記
s=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 80))
s.listen(5)
while True:
conn, addr = s.accept()
print('Got a connection from %s' % str(addr))
req = conn.recv(1024)
print('Content = %s' % str(req))
sensor_reading = readTempAndHumi()
print(sensor_reading)
respone = Htmlpage()
conn.send("http/1.1 200 OK\n")
conn.send("Content-Type: text/html; charset='utf-8'\n")
conn.send("Connection: close\n\n")
conn.sendall(respone)
conn.close()
