Projects
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- Kernal/FPGA Interaction debugging. Freescale 8270 based
system with kernel panics. Debugged interaction problems with custom
FPGA and linux, VHDL.
- USB 2.0 driver debugging
- PCI Ethernet driver debugging. Ethernet chip would become
non-responsive. Patches to driver.
- Perl/Mason/SQL based user interface infrastructure
- Atmel SAM7S Firmware
- Small ARM embedded system with
MMC, SPI, floating point. Flash update and serial protocol software.
- Atmel SAM7S CPU card
- Small CPU card with SAM7S ARM cpu, CS8900 ethernet chip and Xilinux CPLD.
TCP/IP Firmware, diagnostics, bootloader, board bringup, Verilog code for CPLD.
- Voice-over-Satellite-uplink prototype
- Sending compressed speech captured from aviation headset over low speed
satellite uplink.
- Voice-over-IP (VOIP) monitoring
- linux based VOIP
monitoring station. Protocol statistics and jitter measurements.
- SNMP monitoring and configuration
- Access to product status and configuration via SNMP.
- Power Management for new TI ARM cpu (PXA270)
- Added frequency and voltage change support for new ARM cpu. Kernel
interfaces and drivers to make changes automatically.
- uClinux port to ARM9 cpu
- Ported uClinux to ARM9 cpu for cell phone.
- Port and extend JavaVM on TI TMS320DM642 DSP (TMS320C6000 family)
- Ported existing JavaVM and added on-the-fly code generation for
DM642 DSP. Re-coded assembler interpreter for new CPU. Low level
assembler and pipeline scheduling.
- Software emulator for custom microcoded 32 bit cpu
- Emulator program in C, runs existing microcode and boots existing
operating system.
- Power Management for new Intel XScale (ARM) cpu - PXA270
- Added frequency and voltage change support for new ARM XScale cpu. Kernel
interfaces and drivers to make changes automatically. Extensive debugging
with new silicon.
- Low cost X86 based linux platform
- Brought up linux on an custom embdedded x86 platform, hardware debug,
boot code, file system, etc... Initial manufacturing runs of serial
peripheral cards. Manufacturing documentation.
- Ported existing JavaVM and added on-the-fly code generation for
DM642 DSP. Low level assembler and pipeline scheduling
- Low cost automotive vehicle interface
- Microchip 18F PIC platform for data collection from various
automotive vehicle interfaces. Designed hardware and
firmware. Supports CAN, J1850, SCI. Software to support TCP/IP,
J1850, CAN.
- Kernel port to new Broadcom MIPS CPU
- Brought up linux kernel on a new Broadcom MIPS CPU.
- Linux based wireless "picture frame"
- Sharp LH7A400 ARM 920 based platform. Designed hardware and
software. Platform has PCMCIA slot, CF slot, flash, sdram and LCD
interface, touch interface. Designed on low cost 6 layer PCB. Runs
full linux system and displays images and video over wireless link.
- Kernel port and network integration for hardware routing
chip
- Ported linux kernel to new ARM chip and added support for
hardware packet forwarding engine. Added interface to kernel NAT and
filter interface.
- MIPS based hand-held computer with touch screen
- Alchemy MIPS (Au1000, Au1100) kernel drivers for custom shared memory
hardware, Linux drivers and Atmel programming for touch screen, beep and power
management. File system developement for ramdisk, CF disk, flash booting.
Boot code for PCMCIA booting.
- Automotive protocol developement
- Protocol software (J1850, K-line, SCI, CAN, KW2000, J2534) development of drivers, servers, libraries and diagnostics. CAN drivers & diagnostics.
- PIC based ethernet device
- Hardware and software design for simple PIC based ethernet device
(CS8900, PIC18F458) with CAN, serial and parallel ports. TCP stack
and control software. Hardware design, PCB layout and prototype
fabrication.
- Wearable computing
- Linux running on a small cpu which can be worn around and used to interact
with the environment, a.k.a "Wearable computing". For
the MIThril project
I enabled USB on their PowerPC platform and for
the WearARM project I did a soup-to-nuts linux port which included early hardware debug and bringup,
boot rom, linux port and file systems.
- PowerPC platform bring-up
- Specification and debug of PowerPC 832 UPM microcode for DRAM interface.
Debugging and setup with JTAG debugger (Macraigor Wiggler).
- High Performance Ethernet
- Kernel VM debugging on 4 port gigabit ethernet device with PowerPC 7xx processor.
- USB Function drivers
- USB function (client) chip drivers and personality modules for various devices,
including devices designed to look like ethernet devices.
- Specialized I2C drivers
- StrongARM (SA1100) Linux drivers and firmware (Atmel 8051) to communicate over
i2c port for credit card strip reader.
- Audio drivers
- StrongARM (SA1111) Linux audio drivers.
- IPSEC integration and debugging
- Basic IPSEC port to PowerPC 405 processor with special changes to the libc
DNS "resolver" library.
- Custom OHCI USB Host controller
- Modifications to existing linux OHCI USB host controller driver to support
custom OHCI controller chip on PowerPC 405.
- StrongARM SA1111 USB Host controller driver
- Modifications to existing linux OHCI USB host controller driver to support
StrongARM SA1111 chip.
- USB Host controller software
- Complete USB host controller driver for the PowerPC 8xx processor.
Supports interrupt, bulk and isochronous transfers.
Contact Information
Brad Parker
Heeltoe Consulting
661 Massachusetts Avenue, Suite #2
Arlington MA 02476
781-483-3101
brad@heeltoe.com
http://www.heeltoe.com
Heeltoe Consulting
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