Wade PentzBlake OrthGrant Fritz

Andrew GunnBrian Weinstein

TRI-ADS:Targeted Remote Information and

Advertisement Distribution System

System Overview

Wade Pentz

Network of targeted advertisement display modules

Change display based on location, time of day, weather, emergency status, etc

Provide standard DVI outputModules communicate wirelessly with a

base stationPowered from 12V DC wall adapter or car

outlet

System Overview

Wade Pentz

Primary

Secondary

Tertiary

• GPS data processing• LCD display• GPS based image change

• WiFi communication• Base station

Level 0 Functional Decomposition

Wade Pentz

Level 1Hardware Functional Decomposition

Wade Pentz

Command and Data Handling System Overview

Grant Fritz

Coordinate DVI output with CPLD and load image off of SD card

Store GPS location and coordinate ad changes

Manage Wifi/3G link and remote updateManage Bluetooth communications

between display modulesGather temperature/accelerometer data

and coordinate ad changes

CDH Functional Decomposition

Grant Fritz

Command and Data Handling System Hardware

Grant Fritz

Using NGW-100 as main boardAT32AP7000 microprocessor2.6 Linux Kernel

Resource ManagementModular process software designUtilize standard libraries

Software Functional Diagram

Grant Fritz

CDH Software Functional Decomposition

Grant Fritz

Level 0 Module RunBabyRun (Level 0) Inputs - Raw GPS data

- Inter-module Bluetooth data - Configuration data

Outputs - Monitor display data - Inter-module Bluetooth data - Status data

Functionality This process is the primary control and data processor for the TRI-AD system. It takes in raw GPS data through serial, processes it to understand its current location. Receives raw analog sensor data through the I2C bus. Receives update information and status requests through Inter-Process Communication. Negotiates display information with the CPLD through the SPI bus and coordinates with the DVI Chip through the I2C bus. Finally this module also does the primary logic of the system where which image is selected to be displayed.

Test Procedure

Level 1 Software Decomposition

Grant Fritz

CDH SFT Functional Decomposition

Grant Fritz

Level 1

Logic Module Logic (Level 1) Inputs - GPS Coordinates

- Temperature - Time - Configuration Data Matrix

Outputs - Image name to Display Functionality This takes in GPS coordinates, temperature, and time and determines which image

from the configuration data to display. Test Procedure

GPS Module GPS (Level 1) Inputs - Raw Serial GPS Data Outputs - GPS Coordinates Functionality Takes in raw serial data, parses the serial char string and writes the data to

variables. Test Procedure

Display Module Display (Level 1) Inputs - Image filename Outputs - I2C commands to DVI Chip

- SPI commands and image data to CPLD Functionality Takes in an image filename and converts it to a matrix of RGB triplets before

transmitting the data over SPI to the CPLD. Test Procedure

CParse Module CParse (Level 1) Inputs - Configuration File name Outputs - Configuration Data Matrix Functionality Takes in the configuration file address and then parses the data into a data matrix

for easy reference. Test Procedure

Inter-Process Communication Receive Module Inter-Process Communication Receive (Level 1) Inputs - IPC Messages Outputs - Control Functionality Takes in IPC Messages from a message queue and processes the message with the

given command. The commands will consist of PING, SETIMAGE, CLEARIMAGE, HEALTH&STATUS, UPDATECONFIG, and SLEEP.

Test Procedure

Analog Sensors Module Analog Sensors (Level 1) Inputs - Raw I2C Analog Sensor Data Outputs - Processed Sensor Data Functionality Takes in raw I2C data and processes the data to a nice output. Test Procedure

Display System Overview

Blake Orth

Use DVI for easy interface to screens of various sizesDVI prioritized over VGA to allow for future

expandabilityCustom display hardware will allow for a simple

embedded solutionRemoves the need to interface and power a full

rendering graphics cardCurrent image stored to on-board SRAM for fast

accessWill be implemented using TFP410 DVI

Trasmitter, Altera MaxII CPLD and 6MB SRAM

Display Functional Decomposition

Blake Orth

CPLD

Blake Orth

Programmed using Verilog through JTAGClocked at 165MHzTakes care of all Video memory Operations

Reads pixel data from SRAM chips and presents it at 24-bit DVI chip input

Write new image data to SRAM chipsReceives new image data from the

microcontroller via SPIManage all SRAM and DVI control lines

EPM570T144C5N

Blake Orth

Max II – 570 Series 144-TQFPSelected for fast pin-to-pin propagation delay

( down to 4.5ns)440 macro-cells allows for reasonably

complex logicGood performance for current draw – at most

draws 250mADevelopment board being used to develop

Verilog code

Display System Hardware

Blake Orth

Use TI TFP410 PanelBus DVI Transmitter

TI TFP410 DVI Transmitter

Blake Orth

Basic configuration through I2CAllows settings for resolution, DE generator,

and data de-skewTakes 24-bit True Color pixel data and

control signalsEncodes and serializes pixel data to

PanelBus DVI and outputs to a standard Single Link DVI Connector

SRAM

Blake Orth

Stores current image data (1 image)24-bit True Color for each pixel

8-bits for each color part (RGB)

Three SRAM units will be usedRGB pixel data stored in parallelOne unit for each color

Shared 20-bit address busAll parts of a single pixel will have a shared

addressShared 8-bit data bus

Bus control handled with output/write enable pins

SRAM Selection

Blake Orth

ISSI IS61WV1024161M x 16b SRAM8 ns access timeUsing 3 modules totals to 6MB of storage

SRAM Modes

Blake Orth

SRAM has ability for 16-bit data busWe are using in 8-bit data bus mode20-bit address selects a 16-bit wordUses /LB and /UB pins to select upper or

lower byte

Read Cycle Timing Diagram

Blake Orth

Notes: - Upper/Lower byte selection control pins not shown here - /CE will be tied active

Brian

COM Functional Decomposition

Andrew Gunn

GPS

Andrew Gunn

Primary ObjectiveGPS location used to provide optimal

advertisement RS232 Interface

GPS Handler script Input a character string Outputs global variables taken from the char string

GPS Handler

Andrew Gunn

$GPGGA,184149.00,4000.43877,N,10515.72492,W,1,05,1.68,01633,M,-020,M,,*5C

Type = GPGGATime = 18hr 41min 49secs Zulu Time4000.43877 North Latitude10515.72492 West LongitudeGPS Quality 0=No GPS, 1=GPS, 2=DGPSNumber of Satellites 5Altitude in Meters 01633

GPS

Andrew Gunn

Status UpdateFull Circle & Fully Functional

GPS Module Receives Data From SatellitesMicroprocessor Receives Data StringGPS Handler Parses & Saves Information

Where From HereImplement Position LogicIf in this Location -> Display This Ad

Wifi

Andrew Gunn

Used to update the Display Module with new advertisements & information

Initial Wifly utilizes telnet exclusivelyTelnet is completely unsecureTelnet is Great for sending small strings across local

network but not so great at sending large files over internet.

Breakdown, Encrypt, Pack, Transmit, Decrypt, Unpack In addition to writing the serial and wifi drivers

Wiport Wifi Module

Andrew Gunn

Interface RS 232 to UART or Ethernet Wiport - Breakdown, Encrypt, Pack,

Transmit, Decrypt, Unpack Serial and Wifi Drivers

Wifi Software Input a character string to change

networks Outputs information or files through

Ethernet

Bluetooth

Andrew Gunn

Tertiary objectiveRS232 thus we can reuse serial driver from

GPSMilestone 2 objective

Overall COM BoardConnects module headers to board stacksBoard Designed in Altium in progress

Power Functional Decomposition

Wade Pentz

Power System

Wade Pentz

Each board has its own power stageAllows each board to be tested separately

Uses linear regulator to provide needed voltage railsAll IC’s use 3.3V

If time allows, a power board will be createdRoute IC powerProvide DVI display power using boost

converter

Power Stage

Wade Pentz

Power switch for each boardBridge rectifier IC (DF10S)

1.5 Amp average current rating1.1 Volt forward drop

LM317 adjustable linear regulator1.5 Amp average current ratingUses voltage divider to set output voltageExtremely accurate regulation

Additional protection diodes

Power Stage

Wade Pentz

LM317 Linear Regulator Circuit

Brian

For 3.3V:R1 = 220 OhmsR2 = 330 Ohms

Base Station

Andrew Gunn

Current StatusImage_Handler

Converts input to JPGMultiple Copies based on ResolutionPlaces in Outbox

Auto SSH with RSAPushing configurations & images to display units

Where we want to goOptimize and increase functionalityGUI if time allows

Ad Uploaded

Base Station

Image_handler

Hi Res. Display

Low Res. Display

Outbox

CDH

Display

Comm

Power

Milestone 1 Milestone 2System

CDH

Display

COM

Power

• Serial Driver• I2C Driver• GPS Driver• Wifi Driver• Skeleton framework

• Board populated• CPLD programmable• Initial CPLD code written• Write to and read from SRAM

• Wifi working•GPS working• Board populated

• Individual board power functional

• CPLD SPI interface• JPEG conversion and display• Wireless image download

• Interface with DVI chip• Update image based on location

• Bluetooth working• Receive image updates through wifi• Send updates to basestation

• Power board (tentative)

Expo

Brian Weinstein

Complete system workingDisplay images through DVIChange images based on locationAll devices talking with CDHFull communication with base station over

wirelessBluetooth communication functionalPower board if necessary and time allowsSecond module if time allows

User’s manual

Division of Labor

Brian Weinstein

Schedule

Brian Weinstein

Schedule Highlights

Brian Weinstein

CPLD Code Development BeginsGoal: Monday February 28th

Order Display and Com BoardsGoal: March 1st

Schedule Multitasking and DependenciesIntegration of Hardware and Software

Budget

Brian Weinstein

Item Cost

NGW100 Dev Board $120

Board Fabrication $120

DVI Chip (TFP410) $7.50

GPS with Breakout Board

$116.90

Bluetooth $74.95

Wiport $123

SRAM x 3 $75

CPLD $6

Miscellaneous Components

$100

Printing Expenses $100

Sub-Total $738.35

UROP Funding $-960

Sparkfun Donation $-150

Total $-371.65

Risk Management

Brian Weinstein

(303) 55-RILEY

Risk

Thank you!

Questions?