Hiroshi Tokita
プログラマ at Fujitsu
Chiyoda, Japan
Summary
🤩
Rockstar🎓
Top SchoolHiroshi Tokita is a seasoned embedded software engineer with 12 years of focused experience and over two decades at Fujitsu, currently working as a プログラマ in Chiyoda, Tokyo. He brings deep C/C++ and Java expertise, strong Linux systems knowledge, and a physics background from Nihon University that informs his pragmatic, hardware-aware approach to engineering. Hiroshi has hands-on experience contributing to the high-profile Zephyr RTOS upstream—implementing drivers and board support for Renesas and Raspberry Pi platforms, adding sensor, PWM, I2C, DMA-enabled SPI support, and improving display APIs for monochrome devices. He excels at bridging low-level hardware capabilities with maintainable software abstractions, often optimizing build and device-tree configurations for constrained IoT targets. Colleagues rely on him for reliable, production-ready driver work and pragmatic optimizations that make embedded platforms more capable and easier to integrate.
12 years of coding experience
22 years of employment as a software developer
Bachelor, Physics, Bachelor, Physics at Nihon University
Github Skills (14)
rt10
embedded10
device-tree10
rtos10
device-driver10
driver10
c-programming10
sys10
dt10
spi9
i2c9
cortex-m8
arm8
pwm8
Programming languages (9)
Github contributions (5)
zephyrproject-rtos/zephyr
Oct 2018 - Apr 2025
Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:1697 reviews, 272 PRs, 3 branches in 6 years 6 months
Contributions summary:Hiroshi primarily contributed to the Zephyr RTOS project by implementing drivers and board support for Renesas and Raspberry Pi hardware. Their work includes adding support for the Raspberry Pi Pico's temperature sensor, a new series of Renesas microcontrollers (RA4M1), and features like PWM and I2C, along with the supporting device tree configurations and build processes. The user also focused on optimizing existing functionalities by incorporating hardware-specific capabilities, such as DMA transfers for SPI, and providing improved API for the display, with improvements for monochrome displays.
bluetooth-lereal-timezephyrsecuregit-repository
soburi/contiki
Nov 2015 - Oct 2018
Contributions:1 PR, 16 pushes, 57 branches in 2 years 11 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.