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Harsha-s210313/README.md

Hi, I'm Harsha Vardhan

Bare-metal embedded firmware engineer · STM32 · ARM Cortex-M4 · C · Assembly

What I build

Project Description
RTOS Scheduler Bare-metal round-robin + FreeRTOS scheduler on STM32F411RE — TCB structs, SysTick preemption, PendSV context switching in inline assembly. No HAL.
OTA Bootloader Secure OTA bootloader with SHA-256 integrity checks and ECDSA P-256 firmware signing. Python signing server included.
Fixed-Point DSP Library DSP primitives using ARM SIMD intrinsics on Cortex-M4 — 3–5x throughput gains over scalar floating-point.
LRU Cache Controller 4-way set-associative LRU cache on STM32F411RE — 85%+ hit rate, 75% latency reduction. Bare-metal ARM assembly.

Stack

C (bare-metal) ARM Assembly STM32F411RE ARM Cortex-M4 FreeRTOS SIMD intrinsics ECDSA / SHA-256 Python

Find me

  • LinkedIn: harsha-vardhan-7a45b1303
  • College: ECE @ RGUKT IIIT Srikakulam (2023–2027)
  • Status: Open to embedded firmware internships & full-time roles

Pinned Loading

  1. embedded-lru-cache embedded-lru-cache Public

    A bare-metal 4-way set-associative LRU cache controller for STM32F411RE achieving 85%+ hit rates and 75% latency reduction. Implements cache architecture principles on resource-constrained ARM Cort…

    Assembly

  2. fixed-point-dsp fixed-point-dsp Public

    Fixed-point DSP library for STM32F411RE — Q15 arithmetic with ARM SIMD intrinsics achieving 3x throughput over portable C, matching CMSIS-DSP performance.

    Assembly

  3. ota-bootloader ota-bootloader Public

    Secure OTA bootloader for STM32F411RE — SHA-256 integrity, ECDSA P-256 signing, ESP8266 WiFi bridge, staged flashing, Python signing server. No HAL.

    C

  4. rtos-scheduler rtos-scheduler Public

    Preemptive task scheduler on STM32F411RE — bare-metal (TCB, SysTick, PendSV assembly) and FreeRTOS (queues, semaphores, mutex, ISR) implementations. No HAL.

    C