PHP code example of tasoft / php-i2c-extension

1. Go to this page and download the library: Download tasoft/php-i2c-extension library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

tasoft / php-i2c-extension example snippets



$fd = i2c_open("/dev/i2c-1");
i2c_select($fd, 0x48);

for($e=0;$e<30;$e++) {
    // Read for 30 times the value between channel AIN_0 and GND, 4.096 V, 128 samples/s
    i2c_write($fd, 1, [0xc3, 0x85]);
    // or
    // i2c_write_2_bytes( 0x01c385 );
    
    // Wait for conversion completed
    usleep(9000);
    i2c_write($fd, 0);
    $data = i2c_read($fd, 2);

    $value = $data[0]*256 + $data[1];
    printf("Hex: 0x%02x%02x - Int: %d - Float, converted: %f V\n",
        $data[0], $data[1], $value, (float)$value*4.096/32768.0);

    usleep(500000);
}

i2c_close($fd);



use TASoft\Bus\I2C;

$i2c = new I2C(0x48, 1);
for($e=0;$e<30;$e++) {
    // Read for 30 times the value between channel AIN_0 and GND, 4.096 V, 128 samples/s
    $i2c->write16(1, 0xC385);
    // Wait for conversion completed
    usleep(9000);
    $value = $i2c->readRegister16(1);

    printf("Hex: 0x%04x - Int: %d - Float, converted: %f V\n",
        $value, $value, (float)$value*4.096/32768.0);

    usleep(500000);
}

bin
$ cd ~
$ git clone https://github.com/tasoftch/php-i2c-extension.git
$ cd php-i2c-extension
$ phpize
$ ./configure --with-php-config=/usr/bin/php-config7.4 --enable-php-i2c
$ make
$ sudo make install

ini
; configuration for php i2c module
extension=php_i2c

bash
php --ri php_i2c

bash

php_i2c

Version => 0.8.0