Arduino ESP8266 AT GET請求

Question

我很難用ESP8266-01將數據發送到我的數據庫。

我從控制檯中的傳感器獲取正確的數據，但沒有在我的數據庫中。 PHP腳本是正確的，我知道，只是可以肯定的是，我也會在這裏添加它。

我的代碼：

// http://playground.arduino.cc/Main/Average 
#include <Average.h> 
#include <SoftwareSerial.h> 

char serialbuffer[100];//serial buffer for request url 
SoftwareSerial mySerial(10, 11); 

const char* ssid = "Master"; 
const char* password = "#Bennet99*"; 

const char* host = "server"; 

void setup() { 
    Serial.begin(9600); // Connection to PC 
    mySerial.begin(9600); // Connection to ESP8266 
    pinMode(13, OUTPUT); 
    digitalWrite(13, LOW); 

    pinMode(7, OUTPUT); 
    digitalWrite(7, LOW); 
} 

void loop() { 
    float temp = getTemperatureAverage(); 
    Serial.println("Temperature: " + String(temp)); 
    sendTemperature(temp); 

    delay(10000); 
} 

void sendTemperature(float temperature) { 
    digitalWrite(7, HIGH); 
    delay(2000); 

    mySerial.println("AT+RST"); 
    WaitForReady(2000); 
    mySerial.println("AT+CWMODE=1"); 
    WaitForOK(2000); 
    mySerial.println("AT+RST"); 
    WaitForReady(2000); 

    mySerial.println("AT+CWJAP=\"Master\",\"#Bennet99*\""); 
    if (WaitForOK(5000)) { 
    digitalWrite(13, HIGH); // Connection succesful 
    } 

    mySerial.println("AT+CIPSTART=\"TCP\",\"server\",80"); 
    WaitForOK(5000); 
    mySerial.println("AT+CIPSEND=123"); 
    WaitForOK(5000); 
    mySerial.print("GET /Intranet/Interface/modules/php/temp/temp.php?sensorid=\"1\"?humidity=\"1\"&temp=" + String(temperature) + " HTTP/1.0\r\n"); 
    mySerial.print("Host: server"); 
    WaitForOK(5000); 
    mySerial.println("AT+CIPCLOSE"); 
    WaitForOK(5000); 

    digitalWrite(13, LOW); 
    digitalWrite(7, LOW); 
} 

float getTemperatureAverage() { 
    Average<float> ave(10); 
    for (int i = 0; i < 10; i++) { 
    ave.push(getTemperature()); 
    delay(500); 
    } 

    float total = 0.0; 
    delay(50); 

    float temperature = ave.mean(); 

    return temperature; 
} 

float getTemperature() { 
    int sensorVal = analogRead(A0); 
    float voltage = (sensorVal/1024.0) * 5.0; 
    float temperature = (voltage - .5) * 100; 

    return temperature; 
} 

boolean WaitForOK(long timeoutamount) { 
    return WaitForResponse("OK", timeoutamount); 
} 

boolean WaitForReady(long timeoutamount) { 
    return WaitForResponse("ready", timeoutamount); 
} 

// Parts used from https://github.com/contractorwolf/ESP8266 
boolean WaitForResponse(String response, long timeoutamount) { 
    unsigned long timeout = millis() + timeoutamount; 

    while (millis() <= timeout) { 
    while (mySerial.available() > 0) { 
     int len = mySerial.readBytesUntil('\n', serialbuffer, sizeof(serialbuffer)); 

     String message = String(serialbuffer).substring(0, len - 1); 

     if (message == response) { 
     return true; 
     } 
    } 
    } 

    return false; 
} 

PHP：

<?php 
$servername = "server"; 
$username = "root"; 
$password = "root"; 
$dbname = "Intranet"; 
$now = new DateTime(); 

$field = $_GET['sensorid']; 
$value = $_GET['temp']; 

$conn = mysql_connect("server","root","root"); 
if (!$conn) 
{ 
    die('Could not connect: ' . mysql_error()); 
} 
$con_result = mysql_select_db("some_database", $conn); 
if(!$con_result) 
{ 
    die('Could not connect to specific database: ' . mysql_error());  
} 

    $datenow = $now->format("Y-m-d H:i:s"); 
    $hvalue = $value; 

    $sql = "INSERT INTO `DataTable`(`logdata`, `field`, `value`) VALUES (\"$datenow\",\"$field\",$value)"; 
    $result = mysql_query($sql); 
    if (!$result) { 
     die('Invalid query: ' . mysql_error()); 
    } 
    //echo "<h1>THE DATA HAS BEEN SENT!!</h1>"; 
    mysql_close($conn); 
?> 

問候。

Answer 1

問題在於你的算法。 ESP模塊有時會迅速響應，有時甚至會延遲響應取決於您的Internet連接。例如，您發送命令AT+CIPSTART="TCP","server",80，然後您發送WaitForOK(5000);。 ESP沒有回覆OK，它仍然連接到服務器，同時你的WaitForOK(5000);超時並繼續下一個命令。

我會建議你用SERIAL手動輸入所有這些命令並檢查響應。

謝謝。 :)