Brenndon Lee

About Brenndon Lee

Successfully finished many SOC projects from scratch to productions by leading SW engineering team as hands-on lead and mentor: Linux/Windows-based application, communication protocol stack development, and device drivers for DMA, memory-mapped device, interrupt, and data transfer interface. Embedded software development and multi-discipline team leading experience in wireless digital communication baseband SOC for cellular (CDMA1x, EVDV, W-CDMA), Mobile TV/HDTV, and MoCA for the broadband home networking and Access Technology. The SW architecture and implementation of 3GPP/3GPP2 protocol stack, Mobile TV(DVB-T/H) protocol stack, GPS baseband, IP LNB for home networking system. Wireless protocol stack development for CDMA -1X MAC, RLP, MobileIP, and Handoff subsystem. Broad knowledge on network stack for data service on the communication system Strong knowledge on the low level embedded system design with C and Assembly language. Message driven embedded SW design utilizing RTOS CPU-based embedded system design for high-speed data communication. RTOS or scheduler-based Firmware design and implementation Good understanding of communication baseband standard Expert on 3gpp/3gpp2/MoCA protocol stack. Good understanding of peripheral interface: USB, UART, SDIO, I2C, SPI, JTAG, DMA and etc.

Experience

1. Plc Modem Lead Principal Fw Engineer

   Enphase Energy

   May 2021 — Present · Fremont, CA, US

   Developing PLC FW solution for a proprietary PLC modem ASIC chip • Enphase in-house Power Line Communication modem for Solar inverter control and configuration. • Data rate up to 50Kbps based on FSK modulation and Reed-Solomon Enc/Decoder with the specific implementation scheme for less channel bandwidth.• Developed Embedded FW with a proprietary MAC protocol stack and Layer 1 control- Master-Slave and 1-to-N network topology - Continuous Inverter management for the fault detection and recovery - A special FW discovery algorithm to blindly find modem devices - Bare-metal framework with tightly-coupled background/foreground context switching over ARM Cortex-M4- BSP and peripheral device drivers for TIMER, UART, CAN, PLL, DMA, INTERRUPT and GPIO- Debugging infrastructure with local CLI and remote diagnostics over PLC modem link- Developing an overall Embedded FW from the scratch over the simulator, FPGA and ASIC platform with the good understanding RF front-end circuit- Developed test cases in Python for FW verification/validation• Established CI/CD with test automation upon Atlassian infrastructure(Bitbucket, Jira and Pipeline)

Education

• Kyungpook National University

  MSEE, Embedded System Design

  1993 — 1995

• Kyungpook National University

  BSEE

  1986 — 1990