SV: [PHP] Read From COM1 port

From: Richard Lynch [mailto:ceo@l-i-e.com] Sent: 3. march 2005 20:56 >> $fp = fopen("COM1", "rwb"); > You might try this: > $input = fopen("COM1", "rb"); > $output = fopen("COM1", "wb"); > Use $output to write, and $input to read. On a windows one would have to close the connection every time then since that OS only allow _one_ connection to the serial ports. > Another possibility would be to check the manual... I´ve been it around, as I wrote in the first mail, but something must have been misspelled by me, cause I took the example from fgetc: $fp = fopen("COM1", "w+b"); while (false !== ($char = fgetc($fp))) { echo ".$char"; } And nothing happened, so I figured that the switch might me locked somehow, I turned it off and on again and suddenly all the start up info from the switch was shown on my screen. I now use the example as a wrapper: // open connection $fp = fopen("COM1", "w+b"); // listen for output from $fp while (false !== ($char = fgetc($fp))) { // save chars in buffer, if NOT returns or newlines if($char != "\r" && $char != "\n") { $buffer .= $char; // We need to know if things went wrong if(trim($buffer) == "Error") $response[] = "Error"; // execute commands if(trim($buffer) == "SecOff >") { $command = "$Sec[$SecOff]\r\n"; fwrite($fp, $command); print "writing: $command\n"; $SecOff++; $buffer = ""; } } I´m working on it as we speak, this is just a part of the script. It´s so nice to have a break through finally :-) > I don't thing 'rwb' is the correct way to fopen for read/write access. > 'wb+' would be a better answer, I think. I know, that´s how I´ve done it. During try&fail tests I´ve tried like everything. My mistake to not check the code properly before mailing it here... Have a nice weekend out there :o) -- Sincerly Kim Madsen Systemdeveloper / ComX - http://www.comx.dk