Design and Realization of a Prototype Hardware Platform for ...

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The MegaWatch Wireless PlatformMaster's Thesis - Emanuel Corthay11 Around the projectThe current prototype implements a very simple radio access and ad-hoc system to exchangeradio messages with other mobile nodes. The goal of the project is to• Improve the current implementation, making the necessary adjustments to be able to readthe received signal strength of a data packet and to send data at different transmittingpower and speed, implementing RTS/CTS, ...• Build the related easy to use C/C++ library to access the hardware from differentapplications (Linux based).• If interest, evaluate the performances of various modulation and coding techniques on theexisting radio protocol (Return to Zero modulation, error correction codes, spreading,...)• If interest, implement a security encoding/decoding in hardware (FPGA) like AES (seeproject LSM DIP-3).The project might involve communication with the LCA lab.Keywords: Digital design (VHDL), FPGA, C/C++ for the application (linux ARM), wireless protocols,modulation and coding techniques, LinuxBenefits: Learn how the software and hardware interacts and is developed with a complete workingcommunication system, implement coding or cryptographic techniques, improve your digital designand protocols skill by working on the link and physical layer (MAC) of a real radio transceiver.Supervisor : Cédric Gaudin.Project 2: Diploma project : Max Lagger, IN7Implement a modern and efficient ad-hoc routing algorithm for the MegaWatch platformThe current prototype implements a very simple ad-hoc system to exchange radio messages withother nodes by flooding the data to all the other nodes in the system. The goal of the project is to• Implement a modern and efficient ad-hoc routing algorithm that would use a list of directlyreachable neighboring nodes and perform routing protocols to choose the appropriate routeto dispatch messages. Example : AODV (Ad-hoc On demand Distance Vector routing) orDSR (Dynamic Source Routing).• Build a client application to demonstrate the concept with a demonstration.• If there is interest and taken as a diploma project or with 2 students, try and implement acompatible 802.15.4 or 802.11 Linux driver for the radio module. Another possibility is tostudy and implement a security protocol for the platform (like TinySec).The project involves communication with the LCA lab and some team work with project 1 and 3.Keywords: Ad-hoc wireless protocols and algorithms, digital design (VHDL), FPGA, C/C++ for theapplication (linux ARM), security, ad-hoc networkBenefits: Learn about and implement a state of the art ad-hoc routing system on a real testplatform.Supervisor : Cédric GaudinProject 3 : Niccolo Quattropani, SSC 3Build a Human Machine Interface library to interact with the MegaWatch HWThe current prototype implements a simple library to access the various I/O on the boards. A Linuxdriver also exists to access the I2C serial bus to read and write to the microcontroller, whichcontrols the keyboard, the buzzer, the LCD and the LEDs.The goal of the project is to• Implement the code on the microcontroller to enter messages from the numerical keypad(SMS like) and a GUI menu on the LCD interacting with the directional buttons74 / 83
The MegaWatch Wireless PlatformMaster's Thesis - Emanuel Corthay11 Around the project• Improve the library and/or Linux drivers to access the various I/O HW devices byimplementing a simple communication protocol over the I2C serial bus (existing Linuxdrivers)• If interested and time permits, porting and interfacing the LAP virtual keyboard (keyboardimage projected on the table by a laser) or programming demo programs in themicrocontrollerKeywords: Linux drivers, 8051 microcontrollers programming, I2C serial bus, Digital design(VHDL), FPGA, C/C++Benefits: Linux low level system, HMI, microcontroller programming, working with the hardwareSupervisor : Cédric GaudinProject 4 : OpenMonitoring application for the MegaWatch platform (GUI)The current prototype implements a Compact Flash (similar to PCMCIA) interface to plug an802.11b WiFi card. The goal of the project is to• Build a monitoring application that would show the evolution of the ad-hoc network in realtime, including directly reachable neighbours, messages routing, power consumption,…based on the TCP/IP 802.11b WiFi link• Build the underlying embedded client application to send the monitoring data to the server• Present the result and do a demonstrationThe project might involve communication with the LCA lab and team work with other MegaWatchprojects. Keywords: Monitoring C/C++ application, WiFi 802.11b Benefits: Programming skills,knowledge of the TCP/IP Wifi Linux system, GUI, real working systemKeywords: Monitoring C/C++ application, WiFi 802.11bBenefits: Programming skills, knowledge of the TCP/IP Wifi Linux system, GUI, real embeddedworking systemSupervisor : Cédric GaudinProject 5 : OpenPower measurements on the MegaWatch embedded systemThe current prototype includes 2 8051 microcontrollers with an ADC, to measure the current ofvarious elements on the board (WiFi, RF, FPGA, memory). The goal of the project is to• Program the microcontroller to sample the current measurement at the best sample rate,store it in memory, and wait for the ARM/Linux application to empty its buffer• Adapt the electrical onboard circuit to smooth the current measurements to be able to havea reliable measure for a given sample rate• Build a simple interface/library to be able to read the data from the LCD (project 3) and/orthe monitoring application (project 4).The project might involve some team work with other MegaWatch projects.Keywords: 8051 microcontroller programming, ADC, C/C++, Linux, power measurementBenefits: Insight in power measurement monitoring techniques, microcontroller programming,interaction with various hardware and software components.Supervisor : Nuria PazosProject 6 : OpenAd-hoc networking application for the MegaWatch platformThe current prototype includes a simple ad-hoc network system, which can be used totransparently send messages to other mobile nodes. The main board was originally designed tocontrol a robot. The goal of the project is to75 / 83
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EPFL - Swiss Federal Institute of T
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The MegaWatch Wireless PlatformMast
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Page 96 and 97: Component Report MEGAWATCHmegawatch
Page 98 and 99: Single Node Nets Report MEGAWATCHme
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Page 106 and 107: Component Report SABUSALIMsabusalim
Page 108 and 109: BOM Report SABUSALIMsabusalim_gloss
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Component Report ROKEPXA_Brokepexa_
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BOM Report ROKEPXA_Brokepexa_gloss
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Power Pins Report ROKEPXA_Brokepexa
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Extensions Milli-BUS RokEPXAA24 MB_
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Extensions Milli-BUS RokEPXAA24 SPI
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24 MHzrf_TRX_moduletxSpeed3 = ctrl3
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-- Modify here if you change the st
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doEmerBut => doEmerBut,inhibitEmer
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xFifoReadEn -- ctrlreg32if (writeE
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futurestate txBusyTmp
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egPayload
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edge)-- If we reached the end of th
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-- ################################
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RxStbis in std-by)TxStbis in std-by
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when idleRx =>rxEn
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uf:process (clk, reset)beginif rese
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ReadPointer
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end process;-- Bufferize the signal
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when emerPressed =>bufferedEmerButt
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process (clk, reset)beginif (reset=
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component sreg8port ( clk : in std_
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-- Signals to and from the TXchip_e
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component IO_Ctrlport ( clkclkTXres
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File: avalon_bus.vhd[…]-- Above:
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eginif reset = '1' thencurrentstate
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