esp8266使用HLW8032模块采集电压电流功率并在0.96OLED屏幕显示
时间: 2023-05-30 17:03:32 浏览: 277
hlw8012:适用于Arduino和ESP8266的HLW8012库,使用适用于ESP8266的Arduino Core
以下是基于Arduino平台的代码:
首先,需要安装以下库:
Adafruit_SSD1306
Wire
ESP8266WiFi
ESP8266HTTPClient
然后,将HLW8032模块连接到ESP8266的引脚:
- VCC -> 3.3V
- GND -> GND
- SEL -> D1
- CF -> D2
- CF1 -> D3
最后,将0.96 OLED屏幕连接到ESP8266的引脚:
- VCC -> 3.3V
- GND -> GND
- SDA -> D4
- SCL -> D5
代码如下:
#include <Wire.h>
#include <Adafruit_SSD1306.h>
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
Adafruit_SSD1306 display(128, 64, &Wire, -1);
const char* ssid = "your_ssid";
const char* password = "your_password";
float voltage = 0.0;
float current = 0.0;
float power = 0.0;
void setup() {
Serial.begin(9600);
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display.clearDisplay();
display.setTextColor(WHITE);
display.setTextSize(1);
display.setCursor(0,0);
display.println("HLW8032 Example");
display.display();
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
pinMode(D1, OUTPUT);
digitalWrite(D1, HIGH);
}
void loop() {
HTTPClient http;
http.begin("http://192.168.0.100/"); // replace with your server address
int httpCode = http.GET();
if (httpCode == HTTP_CODE_OK) {
String payload = http.getString();
int index = payload.indexOf(":");
voltage = payload.substring(0, index).toFloat();
payload = payload.substring(index+1);
index = payload.indexOf(":");
current = payload.substring(0, index).toFloat();
payload = payload.substring(index+1);
power = payload.toFloat();
}
http.end();
display.clearDisplay();
display.setCursor(0,0);
display.print("Voltage: ");
display.print(voltage);
display.print("V");
display.setCursor(0,10);
display.print("Current: ");
display.print(current);
display.print("A");
display.setCursor(0,20);
display.print("Power: ");
display.print(power);
display.print("W");
display.display();
delay(1000);
}
在这个例子中,ESP8266将通过HTTP请求从服务器获取电压、电流和功率数据,并将其显示在OLED屏幕上。在服务器端,需要编写一个简单的脚本来读取HLW8032模块的数据并将其返回给ESP8266。脚本如下:
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setup(18, GPIO.OUT)
def read_hlw8032():
GPIO.output(18, GPIO.HIGH)
time.sleep(0.00001)
GPIO.output(18, GPIO.LOW)
voltage = 0.0
current = 0.0
power = 0.0
for i in range(10):
GPIO.setup(18, GPIO.IN)
while GPIO.input(18) == GPIO.LOW:
pass
while GPIO.input(18) == GPIO.HIGH:
pass
GPIO.setup(18, GPIO.OUT)
GPIO.output(18, GPIO.LOW)
data = []
for j in range(6):
byte = 0
for k in range(8):
GPIO.setup(18, GPIO.IN)
while GPIO.input(18) == GPIO.LOW:
pass
count = 0
while GPIO.input(18) == GPIO.HIGH:
count += 1
if count > 100:
break
if count > 50:
byte |= 1 << (7 - k)
data.append(byte)
if data[0] == 0x55 and data[1] == 0x55 and data[5] == 0xC0:
voltage = ((data[2] << 8) + data[3]) / 100.0
current = ((data[2] << 8) + data[3]) / 1000.0
power = ((data[4] << 8) + data[5]) / 10.0
return voltage, current, power
from flask import Flask, jsonify
app = Flask(__name__)
@app.route('/')
def get_data():
voltage, current, power = read_hlw8032()
return jsonify({'voltage': voltage, 'current': current, 'power': power})
if __name__ == '__main__':
app.run(host='0.0.0.0', port=80)
在这个例子中,使用了Flask框架来编写Web应用程序。该应用程序将在HTTP请求中返回电压、电流和功率数据,并由ESP8266进行处理和显示。请注意,服务器的IP地址需要根据您的网络配置进行修改。
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