![]() I was able to connect to it from my Ubuntu laptop via my 3.3-volt USB FTDI TTL-232 cable. The stock Debian image for the Raspberry Pi uses the UART as a serial console. We will use this extension for serial port communication. ![]() Install PHP Direct IOPHP by default does not offer good COM port support however a PHP extension called Direct IO does offers low level access to IO. ![]() Configure PHP file with correct local serial port settings. Open terminal program at other end of serial connection. An installed Brainboxes Serial port product. This article explains how to configure PHP in order to send and receive data over a serial port on a unix system or a windows system. However PHP can also be used to control and communicate with other devices. How do I control a serial port using PHP? Typically PHP is used to generate web pages by interrogating a database and files.
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