1 / 10

Team 12 Presents

Team 12 Presents <- Bill Kreider Jeff Turkstra -> Gnomes | / <- Egomaron Jegede Phillip Boone -> A “Black Box” solution to turning old monitors into digital picture frames “DiPFI” “ Di gital P icture F rame I nterface” DiPFI Features

omer
Download Presentation

Team 12 Presents

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Team 12 Presents <- Bill Kreider Jeff Turkstra -> Gnomes | \/ <- Egomaron Jegede Phillip Boone -> A “Black Box” solution to turning old monitors into digital picture frames “DiPFI” “Digital Picture Frame Interface”

  2. DiPFI Features • Provides a “networked VGA controller” to display pictures on any compatible VGA device • Image data provided via Ethernet to Rabbit Microcontroller. • VGA display is done via Epson controller interfacing with a 4MB EDO DRAM memory chip. • Address/Data Multiplexing achieved via a PLD “hack” • Epson driven by 25.175 MHz oscillator • Display controlled by on-device pushbuttons and remote control • IR remote control allows product to be placed out of reach • Status LEDs indicate transmission of a picture

  3. Motivation • Idea originated as a “Digital Picture Frame” (with onboard LCD) • Possible uses included a replacement for concert band sheet music and a generic digital photo album • Unfortunately, reasonably large LCD’s are expensive • Decided to kill the LCD and interface with any VGA-compatible device • Made device more flexible, as well as significantly reducing cost

  4. DiPFI Block Diagram Power Supply 9V DRAM Network PC Digital 3.3V Analog 3.3V Digital 5V Ethernet SONY IR Receiver & Decoder EPSON Graphics Controller VGA Output Rabbit Microprocessor DataBus DATA [0:15] ADDR [0:20] Switches/LEDs PLD’s (Data and Address Multiplexing) Reset Controller

  5. DiPFI Realization Pushbuttons | \/ Rabbit Module | \/ 9V Input -> <- Ethernet Input VGA Output -> DRAM -> EPSON -> <- PLDs /\ | IR Receiver /\ | LEDs

  6. Design challenges • Epson graphics controller, with 128 pins and 2mil spacing between each pad (rather small) • Lack of enough pins to directly interface with a 21-bit address bus & separate 16-bit data bus • Solved with PLD’s • Finding appropriate parts for each required function • DRAM especially • Software for PC and Rabbit

  7. Why You’re in 270/362 • (with respect to this project) • PLD’s • Programmed using a language similar to ABEL and the Dataman programmer • Are basically a mode-controlled series of flip-flops • Microcontroller Interfacing • You’ll learn this in ECE 362 • Incredibly useful in terms of programming the Rabbit as well as interfacing with the Epson graphics controller • Addressing schemes • Provides necessary insight for interfacing with Epson/DRAM data and address busses • Timing analysis • Required to interface with just about any device • Ability to interpret device data sheets • Lot’s and lot’s of data sheets • Digital logic analyzers • Incredibly useful and reassuring

  8. Video Demonstration

  9. ? Questions ? DiPFI

More Related