All devices on Unix are mapped to a device file, the serial ports would be /dev/ttyS0 /dev/ttyS1.. First have a look at the permissions on that file, lets assume you are using /dev/ttyS1. Ls -l /dev/ttyS1 You will want read.write access, if this is a shared system then you should consider the security consequences of opening it up for everyone. Driver Para Impressora Hp Deskjet 840c Windows 7 64 Bits here.

Php serial communication in linux. Am trying to communicate with microcontroller through serial port using php serial class. The commands are not being sent to. Software For Hp Psc 1410 All-in-one. In this tutorial we will see how to use the serial port on Raspberry Pi. We will use the serial port available on Raspberry with a RS232/TTL 3-5,5V adapter and a USB-serial adapter. By default the Raspberry Pi’s serial port is configured to be used for console input/output. This can help to fix.