将arduino引脚号打印到MySQL

时间:2015-09-12 02:52:42

标签: mysql arduino

我已经在Arduino Uno r3 + WiFi Shield项目上工作了几个月,现在我正在努力构建复杂性。我撞墙了。我开始这个项目的经验非常简单,编写任何类型的代码,并且完全没有使用板的经验。如果您对我是否理解您的回答有任何疑问,请将其愚蠢!

我做了一个简单的arduino + wifi屏蔽设置,可以报告按钮推送到MySql数据库。后端的所有.php内容都可以工作,数据库是用phpmyadmin管理的。我试图添加第二个按钮但似乎无法使其正常工作并需要一些帮助。

我已经确定了一个四字段数据库表作为输出:
第一栏:关键。每个条目的顺序唯一标识符
第2列:传感器连接的引脚号
第3列:传感器值
第4栏:日期和时间

请注意,我没有为每个传感器使用专用列。通过使用传感器引脚输入,我只想在列中打印传感器引脚编号。这样(a)节省了表格中的空间,并且(b)允许Arduino使用尽可能多的传感器和它的针脚。

这个想法是按下每个按钮(即使同时按下两个按钮)将获得它自己的线路,传感器引脚源,值和时间戳。除非按下按钮,否则不会发送任何值。

我对如何实现这个最无聊的想法!救命啊!

我的问题
如何让草图检索信号源自的引脚,并将其作为第二列中的数字写入数据库?第13行代码是写入引脚号(我认为)。 " senseval ="需要是报告源引脚的变量
我不知道如何设置它,谷歌只会导致死路一条。我希望这个帖子能够回答我确定会有更多人拥有/将要拥有的问题!

我的草图包含在下面,下面是insert_php_doc。我使用的是Silinas / Benoit" Arduino / Post"来自github的例子:

#include <SPI.h>
#include <WiFi.h>

char ssid[] = "linksys";
int status = WL_IDLE_STATUS;
WiFiClient client;
IPAddress server(xxx,xxx,xxx,xxx);

int inPin_0 = A0; // choose the input pin (sensor #1)
int inPin_1 = A1; // choose the input pin (sensor #2)
int sensorSense_0 = 0; //variable
int sensorSense_1 = 0; //variable
String SensorVal = "senseval=";// "yourdata="
String senseval;//yourdata //MUST KEEP sensval for PHP

void setup() {
  Serial.begin(9600);
  pinMode(inPin_0,INPUT);
  pinMode(inPin_1,INPUT);
  connectWifi();
}

void loop() {
  sensorSense_0=analogRead(inPin_0);
  if (sensorSense_0 == LOW){
    postData();
    delay(5000);  
  }
  sensorSense_1=analogRead(inPin_1);
  if (sensorSense_1 == LOW){
    postData();
    delay(5000);
  }

void connectWifi() {
  while ( status != WL_CONNECTED) {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    status = WiFi.begin(ssid);

    delay(7000);
  }
}
void postData() {
  senseval=SensorVal+String(inPin_0);
  senseval=SensorVal+String(inPin_1);

  if (client.connect(server, 80)) {
    Serial.println("connecting...");

    client.println("POST /insert_mysql_doc.php? HTTP/1.1");
    client.println("Host: www.<domain>.com");
    client.println("User-Agent: Arduino/1.0");
    client.println("Connection: close");
    client.println("Content-Type: application/x-www-form-urlencoded;");
    client.print("Content-Length: ");
    client.println(senseval.length());//yourdata
    client.println();
    client.println(senseval);//yourdata
    client.stop();
  } 
  else {
    Serial.println("Connection failed");
    Serial.println("Disconnecting.");
    client.stop();
    connectWifi();
    printWifiStatus();
  }
}

https://github.com/ericbenwa/POST-Arduino-Data-Wireless插入PHP:

<?php

foreach ($_REQUEST as $key => $value)
{
    if ($key == "senseval") {
        $senseval = $value;
    }
}

// EDIT: Your mysql database account information
$username = "test_user";
$password = "test_password";
$database = "test_db_name_here";
$tablename = "test_table_name_here";
$localhost = "localhost";

// Check Connection to Database
if (mysql_connect($localhost, $username, $password))
  {
    @mysql_select_db($database) or die ("Unable to select database");

    // Next two lines will write into your table 'test_table_name_here' with 'yourdata' value from the arduino and will timestamp that data using 'now()'
    $query = "INSERT INTO $tablename VALUES ($senseval,now())";
    $result = mysql_query($query);
  } else {
    echo('Unable to connect to database.');
  }

?>

1 个答案:

答案 0 :(得分:0)

使用define for pin,它们在运行期间不会更新 我已选择发送引脚01的ID,如果您需要引脚号,则只需将调用更改为postData

使用静态val存储先前的开关状态并检测按下开关。 使用de延迟100ms进行去抖动,如果需要可以更新。 选择做2个帖子来保持逻辑,但根据http post post的成本,一个帖子中的两个值似乎更好。

#include <SPI.h> 
#include <WiFi.h> 

#define PIN0  A0; // choose the input pin (sensor #0) 
#define PIN1  A1; // choose the input pin (sensor #1) 

char ssid[] = "linksys"; 
int status = WL_IDLE_STATUS; 
WiFiClient client; 
IPAddress server(xxx,xxx,xxx,xxx); 

void setup() { 
  Serial.begin(9600); 
  pinMode(PIN0, INPUT); 
  pinMode(PIN1, INPUT); 
  connectWifi(); 
} 

void loop() { 
  static byte prev_0 = HIGH; 
  static byte prev_1 = HIGH; 
  byte val; 

  val = digitalRead(PIN0); 
  if (val == LOW && prev_0 == HIGH) { 
    postData(0); 
  } 
  prev_0 = val; 
  val = digitalRead(PIN1); 
  if (sensorSense_1 == LOW && prev_1 == HIGH) { 
    postData(1); 
  } 
  prev_1 = val;
  delay(100); /* switch debouncing */
} 

void connectWifi() { 
  while (status != WL_CONNECTED) { 
    Serial.print("Attempting to connect to SSID: "); 
    Serial.println(ssid); 
    status = WiFi.begin(ssid); 

    delay(7000); 
  } 
} 
void postData(byte pin) { 
     char buf[8]; 
     int len = snprintf(buf, sizeof(buf), "senseval=%d", pin); 
     if (client.connect(server, 80)) { 
         Serial.println("connecting..."); 

         client.println("POST /insert_mysql_doc.php? HTTP/1.1"); 
         client.println("Host: www.<domain>.com"); 
         client.println("User-Agent: Arduino/1.0"); 
         client.println("Connection: close"); 
         client.println("Content-Type: application/x-www-form-urlencoded;"); 
         client.print("Content-Length: "); 
         client.println(len);//yourdata 
         client.println(); 
         client.println(buf);//yourdata 
         client.stop(); 
     } else { 
         Serial.println("Connection failed"); 
         Serial.println("Disconnecting."); 
         client.stop(); 
         connectWifi(); 
         printWifiStatus(); 
     } 
} 

PHP方面的更新很少 添加intval以删除sql注入 简化如何获得post值 处理缺失的帖子值

<?php 

if (empty($_REQUEST['senseval'])) { 

    echo('Missing data'); 
    exit; 
}   
$senseval = intval($_REQUEST['senseval']); 
// EDIT: Your mysql database account information 
$username = "test_user"; 
$password = "test_password"; 
$database = "test_db_name_here"; 
$tablename = "test_table_name_here"; 
$localhost = "localhost"; 

// Check Connection to Database 
if (mysql_connect($localhost, $username, $password)) 
{ 
    @mysql_select_db($database) or die ("Unable to select database"); 

    // Next two lines will write into your table 'test_table_name_here' with 'yourdata' value from the arduino and will timestamp that data using 'now()' 
    $query = "INSERT INTO $tablename VALUES ($senseval, now())"; 
    $result = mysql_query($query); 
} else { 
    echo('Unable to connect to database.'); 
}   

?>