NodeMCU将数据发送到Raspberry Pi服务器 - phpMyAdmin

Question

我目前在将从温度传感器收集的数据发送到我的Raspberry Pi时遇到问题。 Pi说它还没有收到任何数据。我也不确定GET和POST是如何工作的。我对这些东西比较陌生，所以任何帮助都会非常感激。

NodeMCU代码：

#include <ESP8266WiFi.h>
#include <OneWire.h> 
#include <DallasTemperature.h>
//#include <WiFiEspClient.h>

/********************************************************************/
// Data wire is plugged into pin 2 on the Arduino 
#define ONE_WIRE_BUS D4

/********************************************************************/
// Setup a oneWire instance to communicate with any OneWire devices  
// (not just Maxim/Dallas temperature ICs) 
OneWire oneWire(ONE_WIRE_BUS); 

/********************************************************************/
// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);

// Init library
WiFiClient client;
//dht DHT;
// Wifi config, ssid = wifi name & password = wifi password
const char* ssid = "ATkudnisdb0TAbEdfhrsdhg7i2";
const char* password = "2pkpmp3niagfdhgsdfhg%";
// Get data host
const char* host = "172.168.2.143";
// Your domain remember don't add slash at the end or http it will not work
const char* streamId   = "collectdata.php";
// Sensor values
//int humidityValue = 0;
int tempValue = 0;

void sendRequest(){
  Serial.print("connecting to ");
  Serial.println(host);
  // Use WiFiClient class to create TCP connections
  WiFiClient client;
  const int httpPort = 80;
  if (!client.connect(host, httpPort)) {
    Serial.println("connection failed");
  }
  // We now create a URI for the request
  String url = "/php/";
  url += streamId;
  url += "?temp=";
  url += tempValue;
  Serial.print("Requesting URL: ");
  Serial.println(url);
  // This will send the request to the server
  client.print("POST " + url + " HTTP/1.1\r\n" +
    "Host: " + host + "\r\n" + 
    "Connection: close\r\n\r\n");
  delay(1000);
  Serial.println();
  Serial.println("closing connection");
  delay(2500);
}

void setup() {
  sensors.begin();
  Serial.begin(9600);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");  
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  //digitalWrite(blue, HIGH);
}

void loop() {
  Serial.print(" Requesting temperatures...");
  sensors.requestTemperatures();
  tempValue = sensors.getTempCByIndex(0);
  Serial.print(tempValue);
  // Send the command to get temperature readings
  sendRequest();
}

PHP代码：

<?php
$servername = “localhost”;
$username = “esp8266”;
$password = “Tutorial”;
$dbname = “esp8266”;

$mood = $_GET[‘mood’];
$conn = mysql_connect(“localhost”,”esp8266”,”Tutorial”);
if(!$conn) {
  die(‘Could not connect: ’ . mysql_error());
}
$datenow = date(‘Y-m-d’);
$sql = “INSERT INTO `JSDataTable`(`logdate`,`mood`) VALUES (\”$datenow\”,\”$mood\”)”;
$result = mysql_query($sql);
if(!result) {
  die(‘Invalid query: ‘ . mysql_error());
}
echo “<h1>The data has been sent!</h1>”;
mysql_close($conn);
?>