Php arduino

Jul 9, 20141 like941 views

This document provides code to connect an Arduino board to PHP code running on a computer. The Arduino code receives serial input from the PHP code to control an LED, turning it on or off depending on whether a 0 or 1 is received. The PHP code uses a serial communication class to open the serial port, send the data to control the LED, then close the port.

>_ Things Lab
Connecting PHP with Arduino

Arduino Code : Part 1
int led = 12;
void setup() {
// Open serial communications
Serial.begin(9600);
// send an intro:
Serial.println("0=off, 1=on");
Serial.println();
pinMode(led,OUTPUT);
}

Arduino Code : Part 2
void loop() {
// get any incoming bytes:
if (Serial.available() > 0) {
int input = Serial.read();
if (input == 48) { //received 0
digitalWrite(led,LOW);
}
else if (input == 49) { //received 1
digitalWrite(led,HIGH);
}
}
}

PHP code (same dir as "php_serial.class.php")
<?php
include "php_serial.class.php";
$msg = $argv[1]; // 0=off, 1=on
$serial = new phpSerial;
$serial->deviceSet("/dev/ttyUSB0");
$serial->confBaudRate(9600);
$serial->confParity("none");
$serial->confCharacterLength(8);
$serial->confStopBits(1);
$serial->deviceOpen();
if (intval($msg)==0) $serial->sendMessage(0); //turn the led off
else $serial->sendMessage(1); //turn the led on
$serial->deviceClose();
?>

Running the code
? Upload code into Arduino
? Execute:
# get the PHP cli
sudo apt-get install php5-cli
php test.php [args] # run the program
? Pass 0 to turn the led off, or others to turn it
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Php arduino

1. >_ Things Lab Connecting PHP with Arduino

2. Circuit

3. Arduino Code : Part 1 int led = 12; void setup() { // Open serial communications Serial.begin(9600); // send an intro: Serial.println("0=off, 1=on"); Serial.println(); pinMode(led,OUTPUT); }

4. Arduino Code : Part 2 void loop() { // get any incoming bytes: if (Serial.available() > 0) { int input = Serial.read(); if (input == 48) { //received 0 digitalWrite(led,LOW); } else if (input == 49) { //received 1 digitalWrite(led,HIGH); } } }

5. PHP code (same dir as "php_serial.class.php") <?php include "php_serial.class.php"; $msg = $argv[1]; // 0=off, 1=on $serial = new phpSerial; $serial->deviceSet("/dev/ttyUSB0"); $serial->confBaudRate(9600); $serial->confParity("none"); $serial->confCharacterLength(8); $serial->confStopBits(1); $serial->deviceOpen(); if (intval($msg)==0) $serial->sendMessage(0); //turn the led off else $serial->sendMessage(1); //turn the led on $serial->deviceClose(); ?>

6. Running the code ? Upload code into Arduino ? Execute: # get the PHP cli sudo apt-get install php5-cli php test.php [args] # run the program ? Pass 0 to turn the led off, or others to turn it on

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