98行代码实现Web控制LED灯颜色以及获取SHT30温湿度数据
本帖最后由 忙碌的死龙 于 2023-6-27 15:14 编辑98行代码，只计算了circuitPython的服务端代码，web控制使用Vue + tailwin css开发界面，压缩包已发附件，自行按前面教程配置好circuitPython的wifi设置按后面的教程做就可以了。
https://www.bilibili.com/video/BV11X4y1b77u/?vd_source=8273c27a0c36349999e7d90327ffbf7a
首先看一下成品的样子，本项目实现的内容如下：
1、使用circuitPython部署了mDNS服务，在手机端和电脑端可使用myesp32.local访问控制页面（也可以使用IP地址访问）
2、使用circuitPython实现了基于http服务，包括web控制程序的index.html等文件
3、使用circuitPython实现了用http修改LED灯状态，获取MCU温度和主频，获取sht30温湿度传感器数据
在自己的开发板上部署该服务的步骤：
1、按上一个教程的步骤，配置好wifi编辑页面，能正确访问。教程地址：https://mc.dfrobot.com.cn/thread-316202-1-1.html2、用wifi编辑页面，打开/settings.toml文件，并按以下内容调整，WIFI信息不用按图片改，改了就连不上！！！！！
3、下载附件的压缩包，并解压缩后上传至开发板上
4、使用IO0连接WS2812的IN引脚，IO4和IO5连接SHT30模块的SCL和SDA引脚
5、在手机上打开myesp32.local，就可以开始体验了
circuitPython的源码如下（code.py）：
```
import mdns
import socketpool
import wifi
import os
import json
import microcontroller
from adafruit_httpserver.mime_type import MIMEType
from adafruit_httpserver.request import HTTPRequest
from adafruit_httpserver.response import HTTPResponse
from adafruit_httpserver.server import HTTPServer
ssid = os.getenv("CIRCUITPY_WIFI_SSID")
password = os.getenv("CIRCUITPY_WIFI_PASSWORD")
print("Connecting to", ssid)
wifi.radio.connect(ssid, password)
print("Connected to", ssid)
mdns_server = mdns.Server(wifi.radio)
mdns_server.hostname = "myesp32"
mdns_server.advertise_service(service_type="_http", protocol="_tcp", port=80)
pool = socketpool.SocketPool(wifi.radio)
server = HTTPServer(pool, "/static")
import adafruit_sht31d
import busio
import board
import displayio
displayio.release_displays()
# Create sensor object, communicating over the board's default I2C bus
i2c = busio.I2C(board.IO4, board.IO5)# uses board.SCL and board.SDA
# i2c = board.STEMMA_I2C()# For using the built-in STEMMA QT connector on a microcontroller
sensor = adafruit_sht31d.SHT31D(i2c)
import neopixel_write
import digitalio
pin = digitalio.DigitalInOut(board.IO0)
pin.direction = digitalio.Direction.OUTPUT
pixel_off = bytearray()
neopixel_write.neopixel_write(pin, pixel_off)
@server.route("/")
def base(request: HTTPRequest):
"""
Serve the default index.html file.
"""
with HTTPResponse(request, content_type=MIMEType.TYPE_HTML) as response:
response.send_file("index.html")
# URL parameters can be specified
@server.route("/assets/<my_parameter>")
def route_func(request: HTTPRequest , my_parameter):
"""
Serve js & css file
"""
with HTTPResponse(request, content_type=MIMEType.TYPE_TXT) as response:
response.send_file("/assets/"+my_parameter)
@server.route("/getBoardInfo")
def board_handler(request: HTTPRequest):
data = {
"temperature": microcontroller.cpu.temperature,
"frequency": microcontroller.cpu.frequency,
"name": os.getenv("BOARD_NAME"),
"led": "None",
"pixel": "NEOPIXEL"
}
with HTTPResponse(request, content_type=MIMEType.TYPE_JSON) as response:
response.send(json.dumps(data))
@server.route("/getsht31")
def board_handler(request: HTTPRequest):
sensor.repeatability = adafruit_sht31d.REP_LOW
data = {
"temperature": sensor.temperature,
"humidity": sensor.relative_humidity
}
with HTTPResponse(request, content_type=MIMEType.TYPE_JSON) as response:
response.send(json.dumps(data))
@server.route("/Pixel/<r>/<g>/<b>")
def pixel_handler_url_params(request: HTTPRequest, r, g, b):
neopixel_write.neopixel_write(pin, bytearray())
data = {
"pixel":
}
with HTTPResponse(request, content_type=MIMEType.TYPE_JSON) as response:
response.send(json.dumps(data))
print(f"Listening on http://{wifi.radio.ipv4_address}")
server.serve_forever(str(wifi.radio.ipv4_address))
```
试了几次用嵌入代码导入视频，都不成功，不知道这论坛咋回事儿，直接贴链接吧。https://www.bilibili.com/video/BV11X4y1b77u/?vd_source=8273c27a0c36349999e7d90327ffbf7a
https://www.bilibili.com/video/BV11X4y1b77u
你试试视频这里，粘贴url呢？
ASH腻 发表于 2023-6-6 16:36
你试试视频这里，粘贴url呢？
非常感谢，现在可以了
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