My first post, because I have not found an answer to this problem anywhere! And I looked far beyond Google .. :)
Description:
So, I have a setting where the arduino device is connected to the laptop via a serial USB cable, and the laptop is connected to the Internet.
Example: http://postimg.org/image/cz1g0q2ib/
arduino ---USB---> laptop (transit.py) ---WWW---> server (insert.php)-> mysql DB
On the computer, the python script (transit.py) runs continuously and listens on the COM port, analyzes the received data and transfers it to a file (insert.php) on the remote server (free hosting site)
See the code to find out how it works ...
insert.PHP , ( ), mySql.
, , , mySql, connect.php .
:
Warning: mysqli::mysqli() [mysqli.mysqli]: (42000/1226): User 'user' has exceeded the 'max_connections_per_hour' resource (current value: 1500) in /server/connect.php on line 8
travel ( ) " " . 1500 , ( ). , , - , . , ? ?
python script mysql , .
CODE:
transit.py:
try:
ser = serial.Serial('COM4',9600,timeout=4)
except:
print ('=== COULD NOT CONNECT TO BOARD ===')
value = ser.readline()
strValue = value.decode("utf-8")
if strValue:
mylist = strValue.split(',')
print(mylist[0] + '\t\t' + mylist[1]+ '\t\t' + mylist[2])
path = 'http://a-free-server.com/insert.php'
dataLine = {"table": mylist[0], "data": mylist[1], "value": mylist[2]}
toServer = requests.post(path, params=dataLine, timeout=2)
insert.php:
<?php
include 'connect.php';
if (empty($_GET['type']) && isset($_GET['data'])) {
$table = $_GET['table'];
$data = $_GET['data'];
$value = $_GET['value'];
if($mysqli->connect_errno > 0){
die('Unable to connect to database [' . $mysqli->connect_error . ']');
}
else
{
date_default_timezone_set("Asia/Hong_Kong");
$clock = date(DATE_W3C);
if (isset($_GET['time'])) {
$time = $_GET['time'];
}
else{
$time = $clock;
}
echo "Received: ";
echo $table;
echo ",";
echo $data;
echo ",";
echo $value;
echo ",";
echo $time;
if ($stmt = $mysqli->prepare("INSERT INTO ".$table." (`id`, `data`, `value`, `time`) VALUES (NULL, ?, ?, ?) ON DUPLICATE KEY UPDATE time='".$time."'"))
{
$stmt->bind_param('sss', $data, $value, $time);
$stmt->execute();
$stmt->free_result();
$stmt->close();
}
else{
echo "Prepare failed: (" . $mysqli->errno . ") " . $mysqli->error;
}
}
}else{
echo " | DATA NOT received!";
}
?>
connect.php:
<?php
define("HOST", "p:a-free-host.com");
define("USER", "user");
define("PASSWORD", "strongpassword1");
define("DATABASE", "databass");
$GLOBALS["mysqli"] = new mysqli(HOST, USER, PASSWORD, DATABASE, 3306);
$count = intval(file_get_contents('conns.txt'));
file_put_contents('conns.txt', ++$count);
?>
P.S. , , , , .
, , ?