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当我使用Firebase CLI将数据发送到Arduino UNO以云计算Firestore数据库时,我得到404错误_Firebase_Arduino_Google Cloud Firestore_Google Cloud Functions_Sim800 - Fatal编程技术网

当我使用Firebase CLI将数据发送到Arduino UNO以云计算Firestore数据库时,我得到404错误

当我使用Firebase CLI将数据发送到Arduino UNO以云计算Firestore数据库时,我得到404错误,firebase,arduino,google-cloud-firestore,google-cloud-functions,sim800,Firebase,Arduino,Google Cloud Firestore,Google Cloud Functions,Sim800,我想使用Sim808 GPRS模块和Arduino UNO将数据发送到云Firestore数据库 我上传到Arduino的代码如下: #include <DFRobot_sim808.h> #include <SoftwareSerial.h> #define PIN_TX 10 #define PIN_RX 11 SoftwareSerial mySerial(PIN_TX,PIN_RX); DFRobot_SIM808 sim80

我想使用Sim808 GPRS模块和Arduino UNO将数据发送到云Firestore数据库

我上传到Arduino的代码如下:

  #include <DFRobot_sim808.h>
  #include <SoftwareSerial.h>

  #define PIN_TX    10
  #define PIN_RX    11
  SoftwareSerial mySerial(PIN_TX,PIN_RX);
  DFRobot_SIM808 sim808(&mySerial);//Connect RX,TX,PWR,

  char http_cmd[] = "GET /add?lat=45.23164&long=42.45737&date=29.01.2020 HTTP/1.0\r\n\r\n";
  char buffer2[512];

  void setup(){
    mySerial.begin(9600);
    Serial.begin(9600);

    //******** Initialize sim808 module *************
    while(!sim808.init()) {
        delay(1000);
        Serial.print("Sim808 init error\r\n");
    }
    delay(3000);

    //*********** Attempt DHCP *******************
    while(!sim808.join(F("cmnet"))) {
        Serial.println("Sim808 join network error");
        delay(2000);
    }

    //************ Successful DHCP ****************
    Serial.print("IP Address is ");
    Serial.println(sim808.getIPAddress());

    //*********** Establish a TCP connection ************
    if(!sim808.connect(TCP,"us-central1-myprojectname.cloudfunctions.net", 80)) {
        Serial.println("Connect error");
    }else{
        Serial.println("Connect mbed.org success");
    }

    //*********** Send a GET request *****************
    Serial.println("waiting to fetch...");
    sim808.send(http_cmd, sizeof(http_cmd)-1);
    while (true) {
        int ret = sim808.recv(buffer2, sizeof(buffer2)-1);
        if (ret <= 0){
            Serial.println("fetch over...");
            break;
        }
        buffer2[ret] = '\0';
        Serial.print("Recv: ");
        Serial.print(ret);
        Serial.println(" bytes: ");
        Serial.println(buffer2);
        break;
    }

    //************* Close TCP or UDP connections **********
    sim808.close();

    //*** Disconnect wireless connection, Close Moving Scene *******
    sim808.disconnect();
  }

  void loop(){

  }
const functions = require('firebase-functions');
const admin = require('firebase-admin');
const express = require('express');
const app = express();

admin.initializeApp();
var fs = admin.firestore();
app.get("/",(req,res)=>{
    var lat = req.param("lat");
    var long = req.param("long");
    var date = req.param("date");
    fs.collection("locations").add({
        "date":date,
        "lat":lat,
        "long":long
    }).then(()=>{
            res.send("Location :"+lat+","+long);
            return null;
    }).catch((err)=>{
        console.log(err);
        res.send("Error");

    });
});

exports.add = functions.https.onRequest(app);
然后使用“firebase deploy”命令获得一个链接。项目控制台链接如下所示: “”

最后,我在串口屏幕上观看Arduino UNO。但我得到404(未找到)错误

注意:当我使用浏览器转到链接时,我可以向Firestore数据库添加新记录。


为什么会出现404(未找到)错误?你能帮助我吗?提前感谢。

您的客户请求有点过于简单。您基本上使用这一行作为HTTP协议实现:

GET /add?lat=45.23164&long=42.45737&date=29.01.2020 HTTP/1.0
这对于大多数使用DNS别名在单个IP地址后面承载多个站点的托管服务不起作用。服务器实际上不知道您指的是哪个云功能项目

理想情况下,您应该找到并使用适当的HTTP客户端库,该库知道如何向现代HTTP服务发出请求。但是,如果您确实无法做到这一点,您至少应该在请求中发送一个主机头,以便云功能可以使用分配给您的项目的DNS主机识别您的项目:

GET /add?lat=45.23164&long=42.45737&date=29.01.2020 HTTP/1.0
Host: us-central1-myprojectname.cloudfunctions.net