Ravi Prakash

צרפת

צור קשר

אודותינו

Sr. Embedded Firmware Engineer (in Sensor R&D Dept.) at Trueyes Inc., South Korea.
Firmware Development for 32 Bit ARM Cortex M 0/3/4, ARM7 embedded processors, Aurduino & 8051 µC based products in Embedded C and LabVIEW based Software Development.

• Reads & understand flow charts, circuit schematics, user manuals of mcu/processors & peripherals, and examples to write/modify concerned device drivers, I/O Configurations, Initialization/functional routines.
• Well versed in using CMSIS/HAL abstraction, Data Structures & Pointers in C.
• Writes/modify/debug common low/register level drivers for on/off-chip peripherals, integration and firmware with/without RTOS.
• Works from low level to product level firmware development/integration of modules/protocols/libraries, debug, product level testing.
• LabVIEW application software development for testing products, calibration, production control & monitoring.
• Experienced in using Real Time Operating System which needs Multitasking, Task Scheduling, Synchronization & Inter task communication, memory/stack mgmt, task & interrupt priority mgmt....etc.
• Developed network socket level firmware for LAN & IoT modules, embedded HTTP server (on µC as host), to connect MCU over WIFI/Wired LAN...etc.
• Some of the key firmware projects were: home & lighting automation processors, digital & analog IR sensors (flame & motion) and multiple other module level products like touch keypad, displays, extended keypads, n/w scanner, motor control, eeprom/fram/nor flash,...etc on ARM Cortex & 8051 based MCUs.
• Libraries: MDK ARM (EMAC, TCP, UDP, HTTP, SMTP), LabVIEW VI Libraries, Python (threading, serial, socket, tkinter...).
• RTOS: Keil RTX.
• Tools: Keil, Debuggers (Ulink/STLink/SiLab), ST Cube MX, h/w test kits (like Analog & Digital Discovery, Digilents' EExplorer), Arduino, Logic Analyzers, Terminals, Socket Emulators, LabVIEW, Sniffers, PyCharm...etc
• Can design basic digital logic, understands common board level circuits (but, not interested in hardware jobs).
• Basic know how of Python, Logic/PLC, HTML, OOP.
Consumer Electronics

שפות

הינדי

שפת אם

אנגלית

שליטה בינונית

תחומי התמחות

טכנולוגיה

51 ₪ לשעה

Real-Time / Embedded / DSP

A full time embedded firmware engineer with 5 years experience in Embedded C (a specialized version of C for developing device drivers & firmware abstraction layers right from low level driver layer to transport layers & real time operating system (RTOS)). I have developed, debugged & tested complex embedded systems like home automation processors, lighting automation processors, analog & digital IR sensors for flame & motion detection which involves development of device drivers & interfaces of various types of onchip & off chip peripherals/devices & protocols along with algorithm implementation, in my full time jobs.

LabView

Develops LabVIEW based software Production/Calibration/Product Support (Data/Graphical Monitor (over serial bus/TCP/UDP sockets), Report (in text/csv/xls format) Generation). VIs for DAQmx for logging & real time monitoring multiple channel analog/digital data.

תכנות ופיתוח תוכנה

51 ₪ לשעה

C, C++

Device Driver Development

עיצוב וגרפיקה

34 ₪ לשעה

ממשקים, שמישות, יצירת פרוטוטייפ

Develops LabVIEW based software/Uer Interfaces for Production/Calibration/Product Support (Data/Graphical Monitor (over serial bus/TCP/UDP sockets), Report (in text/csv/xls format) Generation).

נסיון תעסוקתי

פברואר 2017 - היום

Sr.Embedded Firmware Engineer

Truryes Inc. , Gwangmyeong Technopark, Gwangmyeong-Si, South Korea

Domain: Embedded Systems (Firmware (Main) & Test/Product Software (Secondary)).
Industry: Consumer Electronics (Product Company).
Location: Seoul, South Korea.
MCU used: ARM Cortex M4, 8051 based EFM8.
Firmware - Bare Metal (10%), RTOS (0-5%), Non-RTOS driver library based (65-75%), Test/Demo LabVIEW Software development & test (15-20%)
I. Primary Role:
*Firmware requirement gathering from sales/marketing team along with other team members in hardware, sales, applications & third party vendors.
* Firmware development in Embedded C to implement product concept & features, flow, command libraries, protocol implementation & libraries, serial/ip interfaces, test & calibration.
Products involves: Optimization for satisfactory SNR, Data acquisition (analog or digital multi frame data) & generic signal processing to detect some conditions (implementation of algorithms to process captured raw data and to produce simple outputs).
Testing/Calibration/Performance Tuning (35%): Data gathering (using traditional lab equipments or by developing custom labview software and NI DAQmx), Data Analysis (using excel), calibration & test (in lab as well as in KFI) of flame sensor modules using calibration equipment and oscilloscope (to tune various firmware parameters to get optimum signal & SNR in desired detection ranges in no flame & real flame conditions).
Sensor used for flame sensor: Pyreos' ezypyro flame sensor (smd type, i2c sensor interface, multi-frame data)
II. Secondary Role:
* Develops LabVIEW based software for Production/Calibration/Product Support (Data/Graphical Monitor (over serial bus/TCP/UDP sockets), Report (in text/csv/xls format) Generation).
MCU: STM 32 bit ARM Cortex M4, SiLabs' EFM8, Aurduino.
Language: Embedded C.
Tools: Keil uV5, RTX RTOS, ST Link/Ulink/SiLab Debugger, ST CubeMx, Digilent EExplorer, NI DAQmx, Logic Analyzers, Simplicity Studio, LabVIEW, Serial Terminal, Packet Sniffers, TCP/IP Emulators, MS-Excel.

אוקטובר 2013 - אוקטובר 2016

R&D Engineer - Embedded Firmware Development

Raylogic Control Systems Pvt. Ltd. , Santacruz (West), Mumbai, India

Domain: Embedded Systems (Firmware - Bare Metal (25%), OS (35%) & Non-OS (20%), Testing (20%)).
Industry: Consumer Electronics (Electrical Lighting & Home Automation Processor Development).
Location: Mumbai, India.
Bus Interfaces: UART, I2C, SPI, RTC, Timers, WDT, EMC, DMA, EEPROM.
Board Peripherals: LAN IC, Capacitive Touch Keypad, Port Expander, NOR, FRAM, EEPROM, SRAM, IR Remote, LCD (Char./mini O-LED/GLCD), Relays, Leds, Push buttons, Wifi Module.
Libraries: MDK ARM (Networking Libraries - Ethernet, TCP/UDP/DHCP/HTTP/SMTP/DNS...etc).
Protocols/Data Structures: Wiznet, Many data structures for communication with Equipments, Android/iPad App & Windows Config/Control/Monitoring Softwares which are developed for Automation Processors.
RTOS: Keil RTX.
MCUs: ARM Cortex M based.
Role: Device Driver & Firmware Development in Embedded C for ARM Cortex M based Products.
1. Understanding System/Module Specs, studying associated Reference Documents/Manuals, Board Schematics, Processor/Peripherals Manuals, Code Examples...etc to filter out necessary information to write device drivers.
2. Writing/Customizing existing driver codes, interrupt handlers & firmware modules, Simulation and Debugging.
3. Development & Integration of various firmware abstraction layers, involving writing OS tasks, task scheduling, inter task communication, memory management, data structures, interrupt & task priorities, interrupt handlers, writing networking callbacks (tcp & udp sockets, smtp server, http server...) etc.
4. Firmware Migration: Porting firmware to different processors &/or boards, bare metal to OS based (and vice-versa).
5. Product testing as user at all levels of firmware from drivers to product features in networked environment connected with various types of equipment which this product is going to control.
Tools: Keil, Serial Data Analyzers/Terminal, Logic Analyzer, Network Analyzer (WireShark), JTAG Debugger (Ulink Pro), TCP/UDP Emulators, MAC/IP Scanners, Multimeter.

נובמבר 2012 - ספטמבר 2013

Embedded Engineer (Intern) - Bare Metal Firmware

Coders & Developers , Thane, Maharashtra, India

Domain: Embedded Systems (Device Drivers/Firmware).
Location: Mumbai, India.
Purpose: To learn & understand embedded systems for myself (not for certificate/approval/salary/money from somebody).
Role: Embedded - Device Driver Development: 8 Bit (8051) & ARM7.
Bus Interfaces - RS 232/485, UART, I2C, SPI, CAN.
1. Bare Metal Device Driver Development for following peripherals for 8051 & ARM7 microcontrollers in Embedded C & 8051 Assembly Language.
2. Drivers for peripherals like ADC, DAC, Port Expander, RTC, E2PROM.
3. UART Applications: Wireless with RF/GSM/GPS Modules, Serial Terminals,
4. ADC/DAC Applications: Analog Signal Acquisition & Digital Data Processing, Ex: for Channel inputs from sensors/analog outputs.
5. Motor Controllers for (DC, Servo, Stepper - low voltage motors) – Timer/PWM based.
6. GPIO Applications: LEDs, Seven Segments, Char LCD, Motor Controllers, Switches, Matrix Keypad,...etc.
Tools: Keil, MPLAB, EDK, Flash Magic, Multimeter, Function Generator, Oscilloscope.

תארים אקדמיים

אוגוסט 2003 - אפריל 2004

Post Graduate Diploma in VLSI Design Technology

PICT-SITM, Pune

Digital Logic Design, VHDL, Verilog, HDL Simulation, FPGA, ASIC design flows, CMOS Custom Layout design for Digital Gates.

אוגוסט 1999 - מרץ 2003

Bachelor's of Engineering in Electronics Engineering

Kavikulguru Institute Of Technology & Science, Ramtek

4 Year Full Time Electronics Engineering Degree Course

קישורים

linkedin.com/in/raviembedded

My Linkedin Profile

5 תחומי התמחות

51 ₪ לשעה