Information Density: Robert W. Blythe – Signal Evidence & AI Readability

[H1] Resume
of ROBERT W BLYTHE
(972)
200-9523
job2(AT)blythe(DOT)com
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Resume
http://www.blythe.com/
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EMBEDDED
SOFTWARE / DEVICE DRIVERS / NETWORK PROTOCOLS
[H1] EDUCATION
BS
Electrical Engineering/Computer Option - Louisiana Tech University
Hacking
and Penetration Testing - Collin College - Oct 2016
[H1] SUMMARY
Electrical
Engineer with 24 years of experience primarily in the computer,
avionics, and data communications industries.
Real
Time Embedded Applications:
Have several years experience
designing, coding, and testing real time embedded applications. Well
versed in all aspects of hardware/software interfacing. Have used
many different vendors’ In-Circuit-Emulators (ICE) and logic
analyzers. Extensive experience in integration and debugging of
hardware and software designs. Primarily work in developing and
porting protocols such as TCP/IP, VLAN Bridging, Frame Relay, and ATM
(RFC1483). Have written Ethernet drivers for embedded Linux, vxWorks,
and proprietary operating systems. Have implemented Firewalls on
embedded Linux systems for military Information
Assurance (IA) and Cybersecurity requirements.
UNIX
/ Networking / Internet: Extensive
work as a UNIX and Network system administrator. Have set up Internet
DNS servers, Mail Servers, TCP/IP routers, and Web servers. Am very
familiar with the TCP/IP protocol suite. Designed, installed, set-up,
and programmed UNIX systems for small business office automation and
database tasks. Worked as system administrator on UNIX computer
systems in small business and engineering environments. Installed and
administered UNIX workstations over TCP/IP networks on Ethernet and
token ring LANs for software development and testing purposes. File
sharing over the TCP/IP network was with NFS, IBM's HA-NFS, and AFS.
Connected UNIX workstations, PC's, and LAN's to IBM mainframes using
SNA protocols (LU2 and LU6.2).
INTERNET PROTOCOLS: TCP/IP,
DNS, HTTP (Apache, NCSA, CERN), SMTP, POP
LANGUAGES: Shell,
C, PL/M, FORTH, FORTRAN, BASIC, ASSEMBLER (8086, 8085, Z80, Z8000,
6502, 6800, 68000, 80960, PDP-9, PDP-11, PowerPC, and SEL810B)
OPERATING SYSTEMS: UNIX
(AIX 1.2, AIX 2.2, AIX 3.2, SYSTEM V, HP-UX, BSD, ULTRIX),
Linux(Monta Vista, Red Hat, Debian, from Scatch), uClinux, VxWorks
MS/DOS, INTEL ISIS-II, RSX-11M
DEVICE DRIVERS:
Ethernet,
Serial(Async and Sync), i2c, SPI, SD card via SPI, AD/DA, Discrete,
Resolvers, and lots of custom hardware.
HARDWARE:
Arm, PowerPC, X86, Coldfire,
IBM RISC 6000, IBM RT,
IBM PC, IBM PS/2, HP9000, SUN
COMMUNICATIONS PROTOCOLS:
TCP/IP, SNA, ARINC 429,
Frame Relay, LAPB, and MIL STD 1553
EXPERIENCE
DRS Signal Solutions, Germantown,
MD Dec 2016 – Present
Software maintenance on
existing radio tuners. The software was written in C and ran on
either an embedded Linux system on an ARM processor or on bare metal
with no OS on a PowerPC processor. Used JTAG and logic analyzers for
debugging issues.
DRS Power Systems, Milwaukee,
WI Jan 2015 – Sept 2016
Responsible for Information
Assurance (IA) and Cybersecurity implementation of the embedded Linux
based power control systems used on US Navy ships. The Power control
system consisted of a large rack containing multiple embedded Linux
custom boards, PLCs, a NAS, and other network attached devices. This
rack was considered a secure enclave. Communications with with the
rest of the ship was through the Linux boards were I implemented
network firewalls. Used Nessus to conduct vulnerability scans and
Kali Linux for penetration testing.
UMA Technology Partners,
Dallas, TX Feb 2009 – Dec 2014
Rearchitected the Landing Signal Office Display System (LSDOS) for
the Naval Air Warfare Center in Lakehurst New Jersey. The LSODS is a
redundant system that provides data to the Landing Signal Officer to
enhance safety of aircraft landing on aircraft carriers. The current
system uses vxWorks and nonstandard hardware which obsoletes quickly.
The new design provided more open hardware and software to minimize
life cost of the system. Ported C code from vxWorks to Linux. Had to
add Information Assurance (IA)
functionality to the port. Debugged
a Linux touchscreen driver for the Beagle Board (TI OMAP 3530).
Commscope, Richardson, TX July
2010 – January 2012
Did the Board Support Package (BSP) for the ipatch Network Manager
product. The board uses a TI OMAP (AM1808) processor. Worked with the
hardware engineer during board bring up. I modified and debugged the
User Bootloader (UBL), u-boot, and Linux kernel to operate on the
custom board. Built the custom Root File System and rc startup
scripts. Developed a packaging system for updating software on
customer sites.
SCI Sanmina, Huntsville, AL
Sept 2007 – March 2009
Worked on a 2 line LCD display
using a KS0066U driver chip for a dot matrix LCD display. Developed a
menuing system to control the VIS-Net Intercom hardware. Debug TCP
issues on a Xilinx
MicroBlaze processor running
uClinux.
Andrew Corp, Richardson, TX
Oct 2003 – Sept 2007
Worked on several embedded Linux products using x86, PPC, and
Coldfire processors. The Coldfire ran uClinux. Primarily built custom
kernels and wrote device drivers for custom hardware. An SPI
interface to an SD card to add local file system and an SPI to an AD
converter. Worked with the hardware engineers in debugging their new
designs. Wrote application program for the Antenna Display Unit that
uses a socket interface to communicate with an outside antenna
controller. Assisted application programmers with their Linux
questions. Setup and maintained the Linux development environment for
the group.
McKesson Automated
Prescription Systems, Alexandria, LA Mar 2002 – Oct 2003
Worked on automated prescription equipment for pharmacy automation.
This is an embedded Linux project on an ARM processor. My job was to
build the Linux operating system for the application program to run
on. This included downloading the Linux kernel and patches, and
building a base kernel. I modified the device drivers as needed, and
built the patch for the hardware. I was responsible for building the
root file system that ran out of a ramdisk. Wrote all of the startup
and shutdown scripts. Wrote a shared library in C++ that allowed the
application program to access features on the hardware, such as
erasing and writing to on board flash.
Xyterra Computing, Scottsdale,
AZ Nov 2001 - Jan 2002
Worked on router using PowerPC hardware and Linux 2.4. Downloaded
kernel and patches and built customized kernels. Set up server load
balancing and firewalling using Linux Virtual Server and Netfiltering
/ Nat functionality. Wrote administrator programs in C to parse setup
Config files and to allow easier administration of the load balancing
features without having to use iptables command. Debugged ROM startup
code to bring up Linux kernel.
Samsung, Richardson, TX June
2001 – Oct 2001
Wrote Linux device drivers for an embedded application on an MPC8240
processor. Used MontaVista 2.0 (Linux kernel 2.4) Linux distribution.
The driver provided layer 2 networking between MPC8240 and Intel
IXP1200 processors using a PCI bus to connect them. Used an Abatron
BDI2000 and VisionICE for debugging.
Andrew Corporation,
Richardson, TX May 2000 – June 2001
Wrote software for embedded satellite antenna controller using
embedded LINUX (MontaVista and LRP) and embedded DOS. Designed and
wrote socket communications between the two computers. Did Linux
administration on the host and target systems.
Fujitsu, Richardson, TX Feb
2000 – May 2000
Software maintenance on C code on a pSOS environment.
SpectraPoint a Motorola/Cisco
Company, Richardson, TX April 1999 – Feb 2000
Programmed layer 2 bridging and VLAN Ethernet support for an LMDS
product. VLAN trucking was supported using 802.1Q tagged frames. WAN
connectivity was supported using RFC1483 encapsulated ATM.
Connectivity was tested with Cisco equipment. The target was an
MPC860 running VxWorks operating system with code written in C.
Andrew Corporation,
Richardson, TX March 1998 – March 1999
Worked on a Satellite Network Control (SNC) System for ABC
Television. This is an SNMP software package written to run on an NT
network. The systems function is to control and monitor video
transmissions to the affiliate sites. I did the network design using
TCP/IP and NetBEUI, set up the NT Domain and RAS controllers.
Installed and configured OctopusHA+ for disk mirroring and
application fallover. I set up protocol analyzers to capture
satellite telemetry data to analyze proprietary protocol that had to
be incorporated into the SNC. Went to customer’s site for
installation.
Wrote embedded software for a Token Ring to Wireless LAN Bridge.
Primarily concentrated on the TCP/IP stack and an ethernet driver.
Alcatel Network Systems,
Richardson, TX December 1997 – June 1998
Wrote low level device drivers for a Wireless protect switch. Work
was done using a Microtec C compiler on Sun workstations. Target was
a Motorola 68040/68360 running a PSOS operating system.
Nortel, Richardson, TX July
1997 - December 1997
Worked in WorldCom support for the Supernode Data Management (SDM)
system. SDM is a UNIX (AIX 4.2) based Fault Tolerant front end into
Nortel's DMS family of switches. Applications are client/server using
DCE for security. I did System administration on the AIX servers and
HP clients. Installed and configured a DCE cell to allow secure
communications between machines on the network.
SMU School of Engineering,
Richardson, TX August 1995- July 1997
Work as a part time instructor at Southern Methodist University’s
School of Engineering. Taught courses in their UNIX System
Administration program and taught an Internet class in their
networking program.
Andrew Corporation,
Richardson, TX January 1994- July 1997
Setup a departmental intranet for maintaining departmental project
documentation. Setup and administered an Internet firewall to allow
departmental personnel to have access to the Internet.
Ported a proprietary operating system to a PowerPC (MPC860)
processor, code was written in assembly and in C. Designed and coded
the interrupt and system call mechanism. Wrote ethernet driver and
ported Epilogue’s TCP/IP product to the OS. Wrote tools to set up
tcp/ip routing tables and debug networking problems.
Designed and coded a store a forward fax system for the SWAN
(Satellite Wide Area Network) system. The hardware consisted of a
Motorola 68302 processor and a Rockwell Fax/Modem chip. The code was
written in C. Wrote an HDLC driver for the 68302. Developed
asynchronous and synchronous protocols and worked with customers in
integrating the SWAN system into their data networks.
AIL Systems, Lancaster, CA
April 1993 - January 1994
Designed and coded a real time embedded instrumentation system for
B1B flight test. The application code was written in ADA and ran on a
VxWorks real-time operating system. Ported VxWorks to a new VME based
board using C. Development was done on a DECstation running Ultrix.
The target platform consisted of 16 680x0 CPU's distributed between
three VME based systems tied together with Ethernet. Communications
between the distributed application was via Berkeley Sockets.
Boeing, Seattle, Washington
July 1992 - April 1993
Designed and coded embedded FORTH kernels to run on Boeing 777
avionics systems. The FORTH kernels are used for verification of
engineering design, verification of manufacturing, and debugging of
failed hardware units. The kernel was written in assembly language
for the 68030, 68332, and 80960 microprocessors. I taught
introductory FORTH programming classes to the hardware design
engineers, and assisted with problems in their FORTH code.
Development was done on a VAX computer using CMS (Code Management
System) to track source code development. Debug and integration of
the kernel was done using In-Circuit-Emulators.
HaL Computer Systems, Austin,
Texas February 1992 - July 1992
Ported EHLLAPI and LU6.2 programs and wrote test scripts for SNA.
Alcatel Network Systems,
Richardson, Texas January 1992 - February 1992
Modified the software for the LMX-24 Loop Multiplexer, developed when
the company was Rockwell International.
IBM, Austin, Texas November
1990 - October 1991
Product Verification Testing of AIX 3.2 Communications Products.
Primarily responsible for setting up and administering the testing
lab. This consisted of multiple Ethernet and Token Ring local area
networks tied together using RS6000's as gateways. The network
consisted of several IBM RISC 6000's, IBM RT's, IBM PS/2's (AIX,
OS/2, PC/DOS), a Sun, and a Dell (UNIX System V Release 4). The
networks ran TCP/IP and SNA protocols. Setup NFS servers and clients,
and AFS clients. The network was managed with NIS and DNS. Wrote and
ran test cases in shell scripts for the NFS product.
Texas Instruments, Dallas,
Texas July 1990 - September 1990
Designed and coded an LU6.2 application program to run on an Apollo
workstation under the system 5.3 environment. The software was
implemented in C.
Computalog, Ft Worth, Texas
March 1990 - June 1990
Software maintenance on a device to control oil well wireline tools.
This was an embedded 8088 microprocessor and the software was written
in PLM-86. Translated the console control program from basic to
Microsoft C. This was under an MS DOS environment.
Rockwell International,
Richardson, Texas January 1989 - March 1990
Programmed the LMX-24 Loop Multiplexer, a device to convert between
24 phone lines into a DS1 signal. The software was written in C using
an HP 9000 development environment. The target hardware was a
Motorola 68HC11. Software checkout and hardware/software integration
were aided by using an in-circuit-emulator (ICE).
Electrocom Automation Inc.,
Arlington, Texas June 1988 - December 1988
Used C language on an AT&T
3B2 computer with UNIX System V to program a message switch.
Installed the software at customer sites. The message switch is a
software product that ties Electrocom's Mobile Data Terminals to
other computer systems. These other computer systems can be Computer
Aided Dispatch computers or IBM main frames for accessing large
databases. The interfaces to the other computers are via RS-232 or
SNA 3270 emulation on an SDLC line.
IBM, Austin, Texas August 1987
- June 1988
Set up stations to test
connectivity software between PC's running PC DOS and OS/2 operating
systems to host computers. The software included 3270 terminal
emulation (SNA LU2 and LU3) and APPC (SNA LU6.2). Connections were
via Token Ring and SDLC lines between the PC's and hosts. Also a
bridge was established between a Token Ring and PC Net LAN.
Unique Solutions, Arlington,
Texas December 1986 - August 1987
Computer Consultant:
Evaluation, recommendation, and integration of computer systems
(hardware, software, and communications) for customer companies.
Installed MSDOS and UNIX based computers. Studied and evaluated
database systems (Oracle, Informix, Ingres, and Unify) for client
use. Custom programming in "C" and Unify database
management sys