如何从ESP8266发送数据到Django本地服务器

j9per5c4  于 2023-03-13  发布在  Go
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我是Django的新手,甚至是ESP8266的新手。我尝试使用POST方法从ESP8266发送信息到我的Django服务器。信息看起来像这样:

Temperature=24.60&Humiditi=30.30&Soil=0.00&Water=0&Light=602.00

我的ESP8266代码如下所示:

#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <WiFiClient.h>

#define POMPA1 D0

const char* ssid = "****";
const char* password = "*****";

String serverName = "http://127.0.0.1:8000/data/";

int POMP1 = HIGH;
char output;
String output_str;
String payload;
String server_output = "rain";
unsigned long lastTime = -20000;
unsigned long currentTime = 0;
unsigned long remeberedTime = 0;
int timeDelay = 20000;

void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  pinMode(POMPA1, OUTPUT);
  WiFi.begin(ssid, password);
  Serial.println("Connecting");
  while (WiFi.status() != WL_CONNECTED) {
    delay(2000);
    Serial.print(".");
    Serial.println("");
    Serial.print("Connected to WiFi network with IP Adress: ");
    Serial.println(WiFi.localIP());
    Serial.print("DNS IP: ");
    Serial.println(WiFi.dnsIP());
  }
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }
}

void loop() { // run over and over
  if (Serial.available()) {
    output_str = Serial.readString();
    Serial.println(output_str);
      if (WiFi.status() == WL_CONNECTED) {
        HTTPClient http;
        http.begin(serverName);
        http.addHeader("Content-Type", "application/x-www-form-urlencoded");
        int httpCode = http.POST(output_str);
        payload = http.getString();
        Serial.println(httpCode);
        Serial.println(payload);
        http.end();
      }
      else {
        Serial.println("Server Disconnected");
      }
  }
  Serial.println(payload);
  if (payload=="pompa1"){
    currentTime = millis();
    Serial.println("Let's rain");
    if (currentTime >= lastTime + timeDelay) {
      remeberedTime = currentTime;
      lastTime = currentTime + 10000;
    }
    if (millis() - remeberedTime <= 10000){
      digitalWrite(POMPA1, LOW);
    }
    else {
      digitalWrite(POMPA1, HIGH);
    }
  }
  delay(5000);
}

控制台中的输出为:

-> Connected to WiFi network with IP Adress: 192.168.0.101
-> DNS IP: 192.168.0.1

所以这就是为什么我知道服务器连接没有问题。下面是我的网址:

urlpatterns =[
    path("", data, name="main-page"),
    path("data/", get_data, name="get-data")
]

以下是我的观点:

def data(request):
    if request.method=="GET":
        return HttpResponse("<h1>Tutaj będą twoje wyniki</h1>")

def get_data(request):
    if request.method=="POST":
        print(request)
        return HttpResponse("<h1>Tutaj są twoje wyniki </h1>")

现在,我只想把ESP的信息传到Django服务器上,然后保存到数据库中。有人知道问题出在哪里吗?

db2dz4w8

db2dz4w81#

上面的人让我回到了正确的轨道上。他们是对的,我给了错误的地址,因为127.0.0.1是用于本地主机上的应用程序。所以首先我需要将地址更改为0.0.0.0,以允许连接到服务器到其他设备连接到网络。

python manage.py runserver 0.0.0.0:8000

然后,我需要检查我的计算机的IP,因为它是托管服务器,所以这应该是我应该连接的IP。我检查IP使用(Linux):

ip addr show

然后我需要在www.example.com的Django设置中添加地址settings.py

ALLOWED_HOSTS ["0.0.0.0", "your_machine_IP"]

那么我只需要更改ESP82666的代码,以连接到正确的IP:

String serverName = "http://your_machine_IP:8000/data/";

而且效果很完美!谢谢大家的贡献,终于我可以继续我的项目了。

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