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Interfacing Introduction

Interfacing Introduction. Interfacing Overview. Computer. Peripheral. Interface. Wires ICs Resistors Capacitors Transistors Connectors. LEDs Motors Lights Robots Joystick Music Box. Parallel Port Pinout. Graphic from http://www.doc.ic.ac.uk/~ih/doc/par/. Output Table.

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Interfacing Introduction

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  1. Interfacing Introduction

  2. Interfacing Overview Computer Peripheral Interface • Wires • ICs • Resistors • Capacitors • Transistors • Connectors • LEDs • Motors • Lights • Robots • Joystick • Music Box

  3. Parallel Port Pinout Graphic from http://www.doc.ic.ac.uk/~ih/doc/par/

  4. Output Table

  5. Input Table

  6. The Programming

  7. Turing: Preparing for Interfacing • Turing is already prepared for interfacing with the parallel port • No preparation necessary!

  8. Turing: Turning On the LED • Parallelput(value) • Parallelput(1) turns on the 1 bit (D0) • Parallelput(255) turns on all bits (D0-D7)

  9. Turing: Turning Off the LED • Parallelput(0)

  10. Turing: Flashing the LED loop parallelput (1) delay (250) parallelput (0) delay (250) end loop

  11. Turing: LED Walking loop % loops up for i : 0 .. 7 parallelput (2 ** i) delay (500) end for % loops down for decreasing i : 6 .. 1 parallelput (2 ** i) delay (500) end for end loop

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