Transcript Universal Internet Measurement System for High Energy Physics

Universal Measurement
System with Web Interface
Maciej Lipiński
Ph.D. Krzysztof Poźniak, MSc Grzegorz Kasprowicz
Warsaw 25.01 2008
Outline of the project
Hardware provided by Grzegorz Kasprowicz, consists of 3
modules:
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Main module (100x80mm ):
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Single Board Computer module (50x70mm):
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Switched-mode Power Supply
Graphic controller
Sound controller
I2C interface
Peripherals: USB, RS232, Ethernet ports, output for
built-in LCD-TFT and for VGA monitor
Microprocessor: ARM9 (AT91RM9200)
128 SDRAM
Ethernet interface 10/100 Mbit
FLASH 8MB
SD/MMC reader,
Interfaces: 2 x Serial ports, 2x USB hub and device
Acquisition module:
• ALTERA Cyclone I
• 2 x fast, 105MS/s. 14 bit ADCs
• SSRAM – 128k x 32
The Goal of the project:
Utilization of the hardware to create an autonomous,
universal measurement system with Ethernet interface and
operating system on board, in order to enable on-fly
reconfiguration accordingly to the user’s needs. Creation of
TCP/IP and web-based control interface.
Control center
User interface
Measurement
Environment
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Outline of the system
The user interface will include:
• Built-in LCD screen, the mouse and keyboard
• www server for remote application management
• Measurement server for remote measurement control
(i.e. compatible with LabView environment)
LAN
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Example applications:
• Signal acquisition in dangerous places (i.e. high energy
physics)
• Signal acquisition in places which are difficult to access
• Cheap, reconfigurable measurement system
• Remote monitoring of industrial parameters
• An element of a distributed measurement system
• Digital oscilloscope
Measurement system block diagram
and data flow
Universal Internet Measurement
System for High Energy Physics
Main Module
User interface
Ethernet
Measurement interface
External monitor
Single Board
Computer
ARM
Graphic
Acquisition
module
FPGA
LCD
ADC
Signal Source
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Background research
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Studying the provided hardware:
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Studying similar projects:
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TwARM eval board - AT91RM9200 by Pelos, http://twarm.pelos.pl/
ARM9 single board computer designed for image acquisition and processing.
http://www.ime.usp.br/~fr/sbc/
Sarge - single board compute
http://www.blackmesaeast.com.pl/projects/electronics/sarge-single-boardcomputer/1/
Prototype Implementation of the Embedded PC Based Control and DAQ Module
for TESLA Cavity SIMCON
Studying Linux:
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Thorough lecture of most important component’s datasheets
Studying hardware structure
Becoming a „good friends” with the board
Linux From Scratch by Gerard Beekmans
Kernel in a nutshell, O’Reilly
Linux Device Drivers, O’Reilly
Other background reading:
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U-boot documentation: The DENX U-Boot and Linux Guide (DULG) for TQM8xxL
Many tutorials and „howto’s”
Linux customized for
AT91RM9200
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The system I built consists of :
• Kernel: linux-2.6.22.10
• Busybox: version 1.7.2
• uClibc library: version 0.9.29
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Two kernel configurations
• For the ARM microprocessor
• For my computer
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Cross-compiler toolchain chosen, build and used : buildroot
Kernel and root file system compiled as one image and
sent to microprocessor by TFTP
Bootloader: U-boot version 1.1.4, patch from TWARM
To do:
• Booting from SD/USB
• NFS/booting from NFS
FPGA configuration
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Binary configuration file sent by SPI
• At91_spidev character device driver prepared for
AT91RM9200 processor and provided in the kernel patch
is used
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Configuration signals controlled by mapping the
PIO registers from user space
Simple program to sent configure FPGA written
FPGA configuration design
AT91RM9200
User’s space application for loading the FPGA configuration
At91_spidev
open
open
map
write
/dev/spi
read
Binary file with
FPGA configuration
/dev/mem
spi_transfer
Linux User Space
Linux User Space
Kernel Interface
Functions
Linux File System
Linux Kernel Space
SPI
PIO A
PB1
nCONFIG
CONF_DONE
DCLK
DATA
PB2
SPCK
MOSI
FPGA
Altera Cyclon I
Work to be done:
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Research
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Peripheral drivers
Signal processing algorithms
Protocols
Visualization techniques
Interface management
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Bootable from SD/USB
Development of drivers
Appropriate components (ex. necessary server)
Reasonable size
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Acquisition data storage logic
SSRAM data readout logic
Signal processing algorithms implementation
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Programs (or drivers) development :
Operating System preparation
FPGA (HDL, glue logic)
Software
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Implementation of one of the standard measurement protocols
Create user interface:
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Tests
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Data retrieval from FPGA
Data processing
Data visualization
General configuration and reconfiguration
Remote application control
Remote measurement
Direct control (LCD, mouse, Keyboard)
The system will be tested as a double channel digital oscilloscope and spectrum analyzer
The End