Jim Croyle Email & Phone Number

Harvard, Ma, Us

Harvard, Ma, Us

Detroit, Michigan(Mi), Us

Golden, Colorado, Us

Morehead, Kentucky, Us

Boxborough, Ma, Us

Soup to nuts development of firmware (bootloaders, peripheral drivers, IPC, host tools) for next-gen multi-core Risc-V motor controller ASIC. Full spectrum lone-wolf deliverables - architecture, design, implementation , test & doc. C, assembly, FreeRTOS, SiFive core libraries & GNU tools.

Seattle, Wa, Us

Oslo, No

Developed metal mask & product code for ARM based next-gen biometric fingerprint ASIC.

Andover, Massachusetts, Us

Developed stepper motor drivers for several axes on a new breed of autonomous robots. ARM / Ubuntu target, C++, ROS. Deliverables included a ROS Controls Robot HW API library with a test & integration framework for SQA and documentation.

Wilmington, Ma, Us

Developed autonomous mobile robot charger firmware for monitoring and controlling PM-Bus (I2C based) hot swappable power supply modules including fault recovery logic, charger pad contactor control, and basic network appliance support – DHCP, BOOTP, Telnet, and syslog.Team Lead and Principle Developer for a Safe Access System used to access autonomous robotic storage structure with 100s of active autonomous mobile robots. The safe access architecture provides a method of ensuring that quarantined access areas are safe for humans to enter for servicing. Bots are secured to a SIL-2 level of safety (per 61508.) SafetyCPU is a proprietary Symbotic hardware design centered around TI's Hercules ARM safety CPUs, written in C++ and assembly using IAR tools.Manager of a few talented real-time embedded software engineers. Provide direction and vision for embedded software on the autonomous mobile robot platform.

Bedford, Ma, Us

Led a small group of engineers to develop and maintain all Bio-reactor control systems, research lab control systems, and engineering prototype systems. Designed next generation wireless bio-reactor controllers to replace PLC centric architecture. Wireless implemented using MiWi RF stack. Tools/platforms: Microchip MPLAB X (and C16/32 compilers), ported Microchip software modules (IP/TCP, MiWi pro, ModBus), Real-ICE, DSO, DMM.

Bedford, Ma, Us

Re-architected/developed 1st gen legacy bio-reactor RTU system to include increased (x3) channels of I/O (analog and digitial), ethernet support (IP/TCP/UDP), ModBus over IP, Telnet, TFTP, and HTML server, flash file system with data logging, programmable PID control loops, remote firmware upgrade, and batch command (recipe) processing. Microchip based target (64K RAM, 128K Program flash) using MPLAB X IDE (C and assembler), standard test equipment (ICE, DSO, DMM, signal gen).

Us

Developed highly optimized network device drivers for core product, Packetshaper, a LAN/WAN bandwidth management box with patented TCP rate control tech. Principle responsibilities included development and support of performance critical functions including, device drivers, proprietary RTOS core, and internal packet handling and rate control systems. Based on Intel motherboard technology, programming in assembly and C. Utilized ICE, protocol analyzers, Windows and Linux GNU tools. Ported product to Red Hat Linux OS.

Us

Led small team of engineers in design and development of real-time Ethernet packet encryption product (early corporate VPN product with certificate server and Diffie-Hellman key exchange). Developed firmware using Windows target and host – C and assembler, ICE debugger platform. Ported product to Cisco 7500 series router plug-in module – an encryption accelerator PCI bus card built by Cylink in joint development program with Cisco software engineers.

Berkeley, Ca, Us

Designed and developed real-time embedded systems (incl RTOS) for ion spectrometer flight software on Cluster spacecraft (ESA project). Coordinated with French and Italian software engineers to interface with other spacecraft systems. Logic Analyzer for debug. Extreme real time constraints. Instrument D/A DMA control, A/D monitoring, alarm response, TDMA telemetry support, remote config and control. Target: 1750A (16-bit rad-hard military processor).

Support and Coding of wind turbine real-time control system. Multi-processor, Motorola 68K based target. Sun (Unix) development platform, GNU tools, ICE, logic analyzer. Optimized real-time performance characteristics in primary control algorithms, driver development and debug. Developed wind farm SCADA system (PC/Windows). Gathered periodic wind turbine data and reconfigured wind farm for optimal performance based on meteorological and power performance data.