Reading COM (Serial Modem) in PHP
Reading COM (Serial Modem) in PHP
I'd need a COM interface (Windows,COM2) to read with PHP.
This Demo is going on. Reading is a problem, it's running sometimes.
Is there an other way (no dio,no C++) maybe w32api_register_function()
is better?
function rs232init($com,$bautrate) { `mode $com: BAUD=$bautrate PARITY=N data=8 stop=1 xon=off`; } function send($comport,$char) { $fp = fopen ("$comport", "w+"); if (!$fp) { echo "not open for read"; } else { fputs ($fp, $char); fclose ($fp); } } functi开发者_Python百科on read($comport2,$sek) { $buffer = ""; $fp2 = fopen ("$comport2", "r+"); if (!$fp2) { echo "port is open for read"; } else { sleep($sek); $buffer .= fgets($fp2, 4096); } return $buffer; fclose ($fp2); } rs232init("com2","9600"); send("com2","3"); $a = read("com2","2"); echo $a;
The com2 device should be referenced as 'COM2:'
I should point out that there is a PHP serial class already available at http://www.phpclasses.org/package/3679-PHP-Communicate-with-a-serial-port.html.
I don't know what methods it uses internally, but perhaps it will make this a bit easier to get started.
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