* Firmware architecture and development for IoT solutions (asset tracking, industrial equipment monitoring)* Driver and application firmware for Nordic nRF528xx-based MCUs using Segger IDE/nRF52 SDK as well as nRF Connect SDK/Zephyr OS for Ribbiot's tracking product* Implementing BLE services and advertising features on Ribbiot's products* Integration of hardware/firmware with iOS devices* Design of low power ultra-wideband (UWB) products using modules from Qorvo* Firmware design, development and board bring-up for an ultra-low powered cellular IoT gateway based on the nRF9160 SiP using Zephyr OS on custom hardware* Integration of Ribbiot's product with AWS IoT (MQTT message definition, creation and provisioning of security certificates, setting device policies)* Bring up of new hardware designs and development of test modules for new components* Python script development to support manufacture testing of products* Implement best practices for CI/CD workflow using Github* Documentation of designs using UML class diagrams and state charts* Collaborate with Electrical Engineering manager to perform schematic reviews and feedback of hardware designs* Perform sprint planning and prioritizing deliverables for successful product launches

Consultant to local companies engaged in the automotive, aquaponics, environmental and security industries:Telematics========- Developed Python script (on a Windows 7 PC) used to control USB-based Data Acquisition (DAQ) devices- USB DAQ used to interface with a telematics platform to perform simulations and validationHead-Up Display=============- Performed a study of various ARM Cortex-Mx microcontrollers to meet the needs of a new product- Selected the STM32F4 MCU for the custom-designed platform- Architected the firmware for a prototype Head-Up Display using a the QP/C++ State-Machine Framework- Developed the board support package and ported the QP Vanilla Kernel to the platform- Developed various device drivers for UART, SPI and I2C based peripheralsMCU: STM32F407 TOOLS: Rowley Crossworks IDE, ST-Link debuggerAquaponics=========- Prototyped using an mbed based Internet of Things (IoT) platform to profile environment temperature- Experimented with both the TI CC3200 and ESP8266 SOC for Wifi connectivity of the platform- Integrated with both the AT&T M2X and ThingSpeak cloud service to upload temperature on an interval basisMCU: NXP LPC1768, TI CC3200 Launchpad, ESP8266TOOLS: mbed online IDE, TI CCS Cloud IDEEnvironmental============- Bring up new hardware for an environmental data acquisition instrument- Design and develop firmware for an STM32F7-based microcontroller- Initiate and provide support for Continuous Integration/Development for firmware developmentMCU: STM32F7TOOLS: mbed, Atollic TrueStudio, STM32CubeMx, ST-LinkCONFIGURATION MANAGEMENT: Mercurial with BitbucketSecurity=======- Stealth-mode startup engaged in location and identification services- Develop and design firmware based on STM32 MCUs interfacing with Wi-fi, Bluetooth, NFC, GPSMCU: STM32MP1, STM32L4, nRF9160TOOLS: Segger Studio, Visual Studio

* Firmware development for embeddable modules used for IoT solutions (asset tracking, industrial equipment monitoring, light electric vehicle industries)* Driver and application firmware for Nordic nRF52840-based SOMs using modern C++* Bring up of new hardware designs and development of test modules for new components* Test-driven development of GNSS drivers for various GPS modules* Contribute towards ensuring firmware runs on legacy as well as newer supply-secure hardware* Participate in reviews of pull requests and feature enhancements using Git for CI/CD* Perform sprint planning and prioritizing deliverables for successful product launches

* ARM Cortex-M33 MCU / Hifi4 DSP development using the NXP i.MXRT6xx family - bare metal and RTOS based designs* Development of digital audio drivers and applications - using DMA, PDM and UART peripherals* Porting of DSP and machine learning algorithms to embedded target* DSP Concepts Audio Weaver custom module development* Source code management using GitHub along with internal proprietary DevOps tools* Collobaration with cross-functional teams and international vendors* Develop user guides and documents for extended team members* Debug hardware designs with the use of lab measurement equipment and audio capture devices* Assist with project planning and provide technical feedback to managementTOOLS: MCUXpresso, XtensaXplorer, MATLAB, Visual Studio, Adobe Audition, Audacity

* Microcontroller and application processor selection for end-to-end solution of an IoT and RF control product* Participate in schematic reviews and support new hardware bring-up - develop unit tests and utilities to aid hardware debugging* Control firmware design and development using an ARM Cortex-M4F MCU - device drivers for serial peripherals to control RF devices - bare metal architecture using event-driven design* Microcontroller driver interface and application development for a 5G mmWave phased array IC* Embedded Linux development using C/C++ - Microsoft Azure IoT SDK application development - BLE central application development using Gattlib - Multiprocessor serial communication with external MCU - State-machine architecture and design for each process* BLE peripheral firmware development for a SoC - multi-channel ADC monitoring and reporting via BLE* Low-power sensor driver development (I2C, SPI, UART interface) - environment sensors (humidity, pressure, proximity) - industrial sensors (TE, Bosch)* Microsoft Azure IoT Hub deployment - configuring Stream Analytics service - set up of Power BI sink for real-time data monitoring* Microsoft Power BI application development - creation of real-time data dashboard viewable on desktop and mobile devices

* IoT device-side development using Azure IoT Device SDK* Embedded Linux application development with C++11* Yocto Project development for NXP i.MX6

* Develop device drivers for an STM32-based MEMS control platform using C++11* Integrate a USB Video Class application for a Cypress FX3 USB3.0 controller to visualize point cloud data* Participate in formal code reviews using Differential* Adhere to in-house configuration management workflow using Mercurial* Develop Python scripts for validation testing of new ASIC and FPGA designs* Prototyping and testing using Python OpenCV processingMCU: STM32F7, ARM9TOOLS: Eclipse, Cypress USB Suite, Lauterbach Trace32, Phabricator, Gemini Tracker, PythonOS: uC/OS-IICONFIGURATION MANAGEMENT: Mercurial

* Product development and design for an IoT solution used in the hospitality industry* Architect and design firmware for ARM Cortex-M (STM32, Atmel SAMD) based consumer devices * Develop firmware for RTOS (TI-RTOS, FreeRTOS, etc) and OS-less embedded devices* Participate in hardware design reviews and assist Electrical Engineering staff with board bring-up* Develop test firmware for unit testing new hardware* Prototype embedded Linux solutions using the Raspberry Pi* Develop bootloaders for all MCU-based projects* Designed and developed an SSL client application for an embedded Linux platformMCU: Texas Instruments CC1310, ST Microelectronics STM32F4xx and STM32F7xx, Atmel SAMD20, Freescale i.MX6TOOLS: Atmel Studio, Atollic TrueStudio, Code Composer, Visual Studio, SmartRF StudioOS: FreeRTOS, TI-RTOS, LinuxCONFIGURATION MANAGEMENT: Git

* Architect, design and implement ARM Cortex-M4 based microcontroller firmware for an Class B ultrasound medical device using the QP Active Object Framework and UML Statecharts* Develop device drivers for serial flash memory, LCD, FPGA and Application Processor communications using C++. These make use of SPI, UART, I2C and GPIO peripherals.* Perform board bring up and BSP development in cooperation with staff Electrical Engineers.* Modify and debug OMAP35x Linux DVSDK Linux kernel to support touchscreen driver and custom SPI driver.* Participate in design reviews and developed-feature presentations.* Development done using Agile Scrum Methodology* Lead and mentor teammates in microcontroller development tasks* Investigate medical device corrective and preventative action (CAPA) issues for existing product line* Participate in IEC-62304 process developmentMCU: Kinetis-K20 (Cortex-M4), TI OMAP (Cortex-A8) TOOLS: IAR Workbench, Visual Studio, QT Creator, Freescale Processor Expert, Microsoft VisioOS: QK Kernel (QP Framework), Embedded LinuxCONFIGURATION MANAGEMENT: Microsoft Team Foundation Server

Product development and solutions for clients from various industries. Some projects include:* Implementation of a 9-bit UART protocol on a PIC18 microcontroller for a bus slave device. This includes developing SPI and serial (UART) device drivers.* Design a bootloader for a PIC18 device using a SPI bus connection to an Android-based hardware platform.* Design and develop a firmware update and Bluetooth connectivity (using the Infineon eBMU PMB8753/2 module) features for an ARM Cortex-M3 based medical device* Port QP Framework to an STM32 ARM Cortex-M0 deviceMCU: STM32 (Cortex-M0+, Cortex-M3), PIC18TOOLS: IAR Workbench, Visual Studio, MPLAB, Keil MDK-ARM , Eclipse, Microsoft VisioOS: QK Kernel (QP Framework), Keil RTX, Bare metalCONFIGURATION MANAGEMENT: Subversion, Git