Raspberry Pi Serial Port Uart Paper
Serial Port Arduino
The serial port is a common way to “talk” to devices and is a feature that most microcontrollers and computers have. This Raspberry Pi Serial tutorial teaches you how to utilize the board’s UART feature in order to connect to a PC or to other microcontrollers and peripherals. Introduction to Raspberry Pi Serial. Documentation configuration uart The Raspberry Pi UARTs. The SoCs used on the Raspberry Pis have two built-in UARTs, a PL011 and a mini UART. They are implemented using different hardware blocks, so they have slightly different characteristics.
A partial solution is to use the links under /dev/serial: $ lsusbBus 001 Device 004: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port$ ls /dev/ttyUSB./dev/ttyUSB0$ ls /dev/serial/by-id/usb-067b2303-if00-port0$ ls /dev/serial/by-pathplatform-bcm2708usb-usb-0:1.3:1.0-port0I say partial, because some drivers aren't very good at identifying themselves as separate devices. Prolific adaptors are particularly bad at this; two or more PL2303 devices may swap ID at times. FTDI ones are better.