PHP Examples

Raspberry Pi: Reading ModBus data from Huawei inverter SUN 2000

Posted on July 9, 2020 (July 9, 2020) by KMtronic

PHP file: require_once dirname(FILE) . ‘/Phpmodbus/Phpmodbus/ModbusMaster.php’; // Create Modbus object$modbus = new ModbusMaster(“192.168.1.199”, “TCP”); try {// FC 3$recData = $modbus->readMultipleRegisters(1, 32262, 1); // PV1 voltage }catch (Exception $e) {// Print error information if anyecho $modbus;echo $e;exit;} // Print status informationecho “Status: ” . $modbus; // Print read dataecho “Data: “;print_r($recData);echo ““; $data = (256*$recData[0]) + . . .

USB Relay Module for Windows, Linux, Raspberry Pi

Posted on July 9, 2020 (December 30, 2020) by KMtronic

include ‘PhpSerial.php’; // Let’s start the class$serial = new PhpSerial; // First we must specify the device. This works on both Linux and Windows // (if your linux serial device is /dev/ttyS0 for COM1, etc)$serial->deviceSet(“/dev/ttyUSB0“); // We can change the baud rate, parity, length, stop bits, flow control$serial->confBaudRate(9600);$serial->confParity(“none”);$serial->confCharacterLength(8);$serial->confStopBits(1);$serial->confFlowControl(“none”); // Then we need to open it$serial->deviceOpen(); . . .

Receive UDP packet datagrams in PHP ( UDP server socket)

Posted on October 2, 2019 (October 2, 2019) by KMtronic

PHP file: <?php $socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);if (!$socket) { die(“socket_create failed.n”); } //Set socket options.socket_set_nonblock($socket);socket_set_option($socket, SOL_SOCKET, SO_BROADCAST, 1);socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, 1); if (defined(‘SO_REUSEPORT’))socket_set_option($socket, SOL_SOCKET, SO_REUSEPORT, 1); //Bind to any address & port 12345.if(!socket_bind($socket, ‘0.0.0.0’, 12345)) die(“socket_bind failed.n”); //Wait for data.$read = array($socket); $write = NULL; $except = NULL; while(socket_select($read, $write, . . .

PHP receive script for KMTronic DS1820 LAN POST version module

Posted on March 29, 2018 by KMtronic

Receive POST data using PHP PHP file: <?php $date = date(‘Ymd’); $time = date(‘H:i:s’); $hourtime = date(‘H:i’); $unixtime = time(); $file = “/var/www/html/data/”.$date.”.log”; $current = file_get_contents($file); $current .= $date; $current .= “-“; $current .= $time; $current .= “\t”; $current .= $unixtime; $current .= “\t”; $temp = $_POST[‘temperature’]; $temp2 = implode(“”,$_POST[‘temperature’]); $current . . .

Create a Crontab server side PHP script for uploading temperature to a MySQL database

Posted on March 29, 2018 (March 29, 2018) by KMtronic

Temperature Monitor STATUS XML data http://XXX.XXX.XXX.XXX/status.xml XXX.XXX.XXX.XXX is IP ADDRESS Temperature monitor MySQL table Cron is a system daemon used to execute desired tasks (in the background) at designated times. A crontab file is a simple text file containing a list of commands meant to be run at . . .