Ach ja codes:

[php:1:2f3facc36e]function i2c_send($width,$bus,$a,$d,$raw=0) { //$a<0 - use raw read/write
$w=($width==16)?2:1;
$i2c_fn='/dev/xi2c'.($raw?'raw'($w==2)?'16':'8')).(($bus==0)?'':'_aux');
$i2c = fopen($i2c_fn, 'w');
fseek ($i2c, $w*$a) ;
if ($w==1) $res=fwrite($i2c, chr ($d));
else $res=fwrite($i2c, chr (floor($d/256)).chr ($d-256*floor($d/256)));
fclose($i2c);
return $res;
} // end of i2c_send()
[/php:1:2f3facc36e]

Die Smiley gehören nicht hinein, sondern; "doppelpunkt klammerauf"

und

[php:1:2f3facc36e]
function i2c_receive($width,$bus,$a,$raw=0) {
$w=($width==16)?2:1;
$i2c_fn='/dev/xi2c'.($raw?'raw'($w==2)?'16':'8')).(($bus==0)?'':'_aux');
$i2c = fopen($i2c_fn, 'r');
fseek ($i2c, $w*$a) ;
$data = fread($i2c, $w);
fclose($i2c);
if (strlen($data)<$w) return -1;
$v=unpack(($w==1)?'C':'n1',$data);
return $v[1];
} // end of i2c_receive()
[/php:1:2f3facc36e]