![]() Softboxbiz.bitballoon.com› ☆ Php Serial Port Communication Linux Ubuntu. With VMware How to access serial ubuntu host serial port on VirtualBox guest OS. Working with the serial console. One on tty0 and one on the serial port. Dterm AUR is a tiny serial communication. I have installed xampp in fedora 13.I am trying to communicate with microcontroller through serial port using php serial class. My code is example.php include('php_serial.class.php'); $serial = new phpSerial(); $serial->deviceSet('0'); $serial->confBaudRate(9600); //Baud rate: 9600 $serial->confParity('none'); //Parity (this is the 'N' in '8-N-1') $serial->confCharacterLength(8); //Character length (this is the '8' in '8-N-1') $serial->confStopBits(1); //Stop bits (this is the '1' in '8-N-1') $serial->confFlowControl('none'); //Device does not support flow control of any kind, so set it to none. //Now we 'open' the serial port so we can write to it $serial->deviceOpen(); $serial->sendMessage('*1' ); //sleep(1); // echo 'hi'; $serial->deviceClose();?> The php script gets executed but gives the following warnings. Warning: Specified serial port is not valid in /opt/lampp/htdocs/xampp/php_serial.class.php on line 147 Warning: Unable to set the baud rate: the device is either not set or opened in /opt/lampp/htdocs/xampp/php_serial.class.php on line 241 Warning: Unable to set parity: the device is either not set or opened in /opt/lampp/htdocs/xampp/php_serial.class.php on line 295. I have used the command: chmod 0777 /dev/ttyUSB0 to give permissions. I have also tried to add the apache user 'prudhvi' to the dialout group by using command: $ usermod -a -G dialout prudhvi But it doesnt work. When I send a command directly from the terminal using the command: echo 1 > /dev/ttyUSB0 it works and '1' is transmitted to the serial port. But using php I get the above warnings. I have used the '$whoami' to check name of user and added that user 'prudhvi' to the dialout group. It still doesnt work. Please help me guys. I did this once with Debian to control an Arduino board with a PHP script and initially ran into the same problem. In Debian, you need to add the Apache user to the dialout group in order to allow it to make serial connection requests. I would assume the same is true for Fedora. In Debian the command is: useradd -G dialout www-data However I believe Fedora names the Apache user as apache instead. I don't have a Fedora machine to test on, but I would assume the command you need to run is: useradd -G dialout apache You will then need to restart your xampp server. See the following for reference: Neal. I am building an online POS and trying to establish low level communication with an Epson tm-t88iv thermal printer. There is no direct printing of files, only hexadecimals or ascii can be sent to the hardware in a specific format for it to print. All of this done in a linux enviroment (both ubuntu 13.10 and 12.04). Now the problem is that I can't establish communication with the printer. I have tried using Jzebra and other java to javascript libraries but with no luck, so I changed to a more familiar environment and tried using the php serial class with a status check code but nothing happens.
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АвторНапишите что-нибудь о себе. Не надо ничего особенного, просто общие данные. Архивы
Март 2019
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