wkellen

Did you ever figure this out? I read where you should be able to use "sleep(1);" between each command and it would put a 1 second delay before it executed each command. I haven't ever used it and might have a use for it coming up. I am curious how you accomplished this. Also I read where you can use "usleep(250000);" for a 1/4 of a second delay.

Hello, I have a webpage that runs some php code to control electrical devices. One part of it controls outside lights. Another part controls an electric door striker. I keep expanding the functionality of it and need to change one pin of the port without affecting the others. So far I use a different port for each function but I am out of ports so I need to use the different pins of the parallel port. I am using a linux ubuntu server. From my php webpage I issue this command: <?php exec("/home/setSerialSignal /dev/ttyS0 0 0"); ?> which controls the lights using the serial port. I can control 2 pins but I can't check the status of them so if I make a change to one pin it cancels the other. For another one I use the parallel port with this command: <?php exec("/home/parashell 0x378 1"); ?> which turns on pin #2 of the parallel port. Parashell has an executable called "pin". If you type the command "pin 0x378" it will return a value for the status of the parallel port. "1" for example which tells me that pin #2 is on. Is there a way to pass this value to a php variable? I am looking to be able to read the status of the port and make changes to just the pin I want. Lets say pin #2 is on and I want to turn pin #3 on. I would have to issue <?php exec("/home/parashell 0x378 2"); ?> to turn pin #3 on, but that would turn off pin #2. If I could pass the "1" from the "pin" command I could add it to the "2" and give it the command with a variable as "3". Thanks in advance for any help you can give. I hope I explained it ok and didn't confuse everyone.