William N. Butler

1304 Breanna Way

Coppell, Texas 75019

(972) 304-0545

bbutler@netbutler.com

Education:

Texas A&M University, College Station, Texas Bachelor of Science in Computer Science, 1991 Minor: Electrical Engineering Microsoft Visual Basic Programming Course, 1994 Booch OO Design Training, 1995 TI DSP 320X2xx Training, 1997 TI DSP 32055xx Training, 2003

TECHNICAL SUMMARY:	Hardware:	MCF5xxx, MCP860, MC68xxx, TI DSP 320C240, 320C54CST, 320C5402, 320C5502, ADSP2185, 8051, 68HC812, IBM PC/x86 and Compatibles, HP730, Sun, Sparc, DEC6xxx, 8xxx, 11/750, 11/785, GPIB-488, MIL-STD-1553
	Operating System:	RTEMS, PSOS, LINUX, Windows 9x/NT/2K/XP, UNIX, VRTX, USX, Nucleus, OS2/WARP, MS/DOS 6.2, VMS
	Languages:	C, C++, MC68xxx/TI Assembly, Windows SDK, ZAPP, MFC, OWL, YACC, MEWEL, PASCAL, FORTRAN, Visual Basic.
	Design Tools:	Evergreen Case Tools, CADRE Case Tools
	Debugging Tools:	Single Step ICE, TI Debuggers, GDB, HP 7400 series ICE, Tektronics and HP Oscilloscope, Tektronics Logic Analyzer (Prism 3000, DAS), CADRE in-circuit emulator, HP4951a Protocol Analyzer, IO-Tech 488 Analyzer.

Professional Employment

September, 2002 to Present

Estech systems Inc, Plano, TX Senior Firmware Embedded Software Engineer Responsible for architecture, design, development, and testing of real-time, embedded code for a market leader in telephony equipment utilizing TDM and VOIP technologies. Extensive experience with Motorola/Freescale MCF5206e, MCF5272, MCF5407; TI TMS320C5402, TMS320C5502; and ADSP-2185 processors using C/C++ and assemble. Responsible for low-level board bring- up, including drivers for flash, SDRAM, network chips, RTC, Compact Flash, IC2, and T1 Framers. Ported, expanded and maintained many DSP algorithm in assembly to different DSP brands to take advantage of vendor pricing. Algorithm familiarity include: tone generators, CID & DTMF codecs, and echo-cancellers. Very comfortable with working on board at the hardware interface level. Familiar with TDM serial bus interfaces as well with VOIP technologies.

January, 2002 to September, 2002

Advanced IP COmmunication, Richardson, TX Senior Embedded Software Engineer / Project Leader -Contractor Responsible for architechure, design, development, and testing of real-time, embedded code for a startup company to produce a small business phone switch use VoIP. Developed code for the Motorola MCF5307 processor using C/C++ coupled with RTEMS real-time OS. Wholly responsible for board check out, Gnu Tools, bring up of the board, writing bios, which provided a network boot, and 80% of the application. The proprietary board included flash, SDRAM, a network chip, a RTC, and Compact Flash. Also developed code for the TMS32054CST DSP to interface to the coldfire utilitising the Host interface port. Used Assembly for low-level startup, driver ISR and debugging. Administered a Linux Server running 6.2, which we migrated, to 7.3.

August, 2000 to December, 2001	ComSpace Corp, Coppell, TX Senior Embedded Software Engineer Responsible for design, development, and testing of real-time, embedded code for a startup company that provided spectrum efficiency over RF. Developed code for the Motorola MPC860 processor using C coupled with the PSOS real-time OS. Also developed code for a VLSI ARM processor using C coupled with the Nucleus OS. Further, developed network data interface applications using LINUX on a PC target, compiled with GNU tools. Used Assembly for debugging and specialize in the areas of serial and network interfacing.
December, 1995 to August, 2000	Vari*LITE, Irving, TX Senior Embedded Software Engineer - Project Lead Responsible for design, development, and testing of real-time, embedded code for the industry leader in concert and stage automated lighting. Products use Motorola HC12, 68360, 68302, 68332, 68040, and TI Dsp 320C240 processors on custom boards. Code generated in C, C++ and Assembly with the MicroTec C, GoDsp C and by HiCross embedded C/C++ compilers hosted on PC and UNIX platforms. Trained in Booch Design model. Experience in Microsoft C++ for Windows 95 user interfaces. Managed several projects and a team of 3 people.
July, 1994 to December,1995	AMR- Sabre Decision TECHNOLOGY, Irving, TX Software Engineer - Contractor Team member developing a large commercial fourth generation compiler (QIK2) to produce user-friendly interfaces for complex host environments in call centers. Development under Watcom C++ for multi-platforms (DOS, Windows 3.X, OS2/16 and OS2/PM) using ZAPP class framework, MEWEL for DOS and OS/16 capability, and YACC as the lexical engine. Software Engineer/Project Manager - Contractor Designed and maintained an Automated Travel Authorization Certificate (AutoTAC) program developed in Microsoft Visual Basic (VB) using Q&E database extensions. Work closely with clients and operators to increase TAC processing efficiency, increase user-friendliness, and decrease operator-training time. Increased processing from 2100 TAC’s/month to 21,000 TAC’s/month. Other duties included Novel LAN administrator and configuration administrator Software Engineer - Contractor Developed Window 3.X printer drivers for specialize Europe ticket printer. Development under Microsoft Visual C++ 1.5 compiler.
January, 1990 to July, 1994	ElectroSpace SYstems, Inc., Richardson, TX Software Engineer/ Software Lead Team member designing DF calibration controller required to control and collect data from several GPIB-488, serial (RS232, RS485), MIL-STD-1553, and TTL devices. System requirements included time critical control, recovery from equipment errors with reduced mode capability, and wireless synchronization timing between controllers. Selected hardware and software for project including PC 486 notebooks, interfaces, networking, and programming environment. Development under Windows 3.11 using Borland C++ 3.1/4.0. Designed using C++ OOP with class structures and data encapsulation. Software Embedded Engineer Team member implementing a project design using C++ OOP on Sun Sparcs. Developed control algorithms for HP signal generators controlled using GPIB-488 bus. Software Embedded Engineer / Project Lead Designed, developed, and tested embedded software for large earth station antenna control systems. Responsible for projects developed using C hosted on pc and Unix environments cross-compiled using MircoTec C coupled with the VRTX real-time OS based on the MC68xxx platforms. Used Tektronics Logic Analyzer (Prism 3000, DAS) and CADRE in-circuit emulator to debug code.
February, 1989 to December, 1989 June, 1987 to December, 1987	Tees Engineering computer services, College Station, TX DEC VAX System Programmer /Operator Solved programming problems and assist with the VAX/VMS environment.
January, 1988 to January, 1989	US ARMY, TEST AND EXPERIMENTATION COMMAND (TEXCOM), Fort Hood, TX Computer Specialist (COOP) Team member designing, implementing, and testing programs used for critical reliability testing for the Department of Defense. Developed using Clipper/ dBase 3.