Lecture 26: Interfacing with Hardware

Question 1

ports

Answer 1

• computers used to have things like serial and parallel ports, but slow and rarely exist now
• other ports are available (ethernet, USB, firmware) but more difficult to control and get right
• found in \dev in terminal

Question 2

raspberry pi

Answer 2

• embedded hardware- system on a chip
• lots of systems on a chip (SoCs are out there)
• often w/exposed pins, easy to interface
• many can run a full-fledged OS\Linux

Question 3

pins on a breadboard

Answer 3

• can access them in a program

Question 4

datasheet/spec sheet

Answer 4

• details technical characteristics of a component (document)
• can be hardware or software
• often includes pin diagram, I/O waveforms, timing, functional descriptions, etc.

Question 5

input and output with pins

Answer 5

• 000 is input
• 001 is an output

Question 6

RPI.h file

Answer 6

• rasperberry pi header
• generates the starting address/get addresses for the pins