Brenndon Lee
Plc Modem Lead Principal Fw Engineer @Enphase Energy
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WORK HISTORY
Plc Modem Lead Principal Fw Engineer @Enphase Energy
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
Kyungpook National University
BSEE
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.
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