🔹 Embedded System Developer with hands-on experience in ophthalmic medical device industry (EN ISO 13485:2016, IEC 60601-1, IEC 62304, ISO 14971) and large-scale deployment (300+ retinal scanners with Windows IoT imaging and runtime operation).
🔹 Deep expertise in C programming, embedded Linux customization (U-Boot, SquashFS), and low-level system bring-up.
🔹 Embedded Linux projects include TFTP bootloader interfaces, partition analysis with binwalk, and firmware repackaging for routers.
🔹 Strong in firmware development, cross-compilation toolchains, and Git version control.
- Programming Languages: C, C++, Java , Assembly (on 8051 series)
- Embedded Platforms: PIC32, Arduino, Archer C7, 8051, TMP87CH38, TDA9351
- Operating Systems: FreeRTOS , OpenWRT, Ubuntu , Windows , bare-metal
- Circuit Design: Schematic , Electronic drawing , Circuit Analysis , Troubleshooting , Assembly , Soldering , Testing
- Drivers & Peripherals: U-Boot , TFTP , RS232 , UART, DMA, GPIO, I²C, SPI, Timers, Interrupts
- Debugging & Tools: GDB, JTAG, MPLAB X, GCC, Git , SquashFS , binwalk
- Others: Retina Photography , Specification Verification Report, Product Validation Report , Memory allocators (O1Heap), synchronization (mutexes, semaphores), software timers , Servo motor control, sensors drivers
🔹 Widefield Retinal Scanner Deployment (300+ Units)
Assembled, configured, verified and validated over 300 retinal scanners from 200+ individual components, following 50+ Work Instructions aligned with IEC 60601-1 and FDA regulatory.
Deployed Windows IoT–based software and custom medical applications across 300+ devices using the AOMEI Backupper tool, ensuring system consistency and operational integrity.
🔹 FreeRTOS labs on PIC32MZ EF board [https://github.com/viettronics868/FreeRTOSonPic32.git]
Utilize MPLAB X IDE v6.25 and Compiler Toolchain XC32 to create the labs to help developers to get used to with FreeRTOS Kernel on Curiosity 2.0 PIC32 MZ EF development board.
- Implementation of UART communication using DMA and FreeRTOS synchronization mechanisms.
- Protected shared DMA buffers with mutexes
- Used binary semaphores for ISR-to-task signaling
- Demonstrated efficient real-time communication
- Illustrated Priority Inversion and Priority Inheritance
🔹 Robot and C/C++ Development & Embedded Systems[https://github.com/viettronics868/firefighterRobot.git]
Build an Arduino-based robot equipped with flame/ultrasonic sensor, Servo/DC motors.
Completed 31+ C programming exercises (Exercism) [https://github.com/viettronics868/C_language.git]
Implement memory allocators, explored device drivers
- Demonstrated differences between static, heap, and stack allocations
- Useful for teaching and debugging embedded memory layout
🔹 TP-Link Archer C7 v3 Embedded Linux Customization[https://github.com/viettronics868/stock_archerc7v3.git]
Developed custom firmware projects:
- Accessed U-Boot,
- Configured TFTP booting,
- Dumped kernel/rootfs partitions,
- Analyzed SquashFS with Binwalk, and repacked firmware using mksquashfs.
- Experimented with cross-compilation and rootfs customization
🔹 Television R&D and Mass Production
Designed and developed TV hardware/software (TMP87CH38, TDA9351 chipsets).
Automated production alignment processes with 8051-based embedded C
I’m continuously expanding my expertise in Embedded Linux and real-time systems.
Some recent learning projects include:
- Practicing FreeRTOS on updating motor's angles and implementing MIPI CSI 2.0
- Exploring device driver development under Linux (GPIO, UART)
- Building and flashing custom Linux images for embedded hardware
✨ I’m always open to collaboration on Embedded Linux, device drivers, or real-time system projects. ✨