Real-Time Embedded Systems & Device Drivers

KRAG delivers production-grade embedded firmware designed for determinism, ultra-low power consumption, and long-term field stability. We write close-to-the-metal code that brings silicon to life—from tiny 8-bit microcontrollers to multi-core 32-bit ARM Cortex-M, RISC-V, and Xtensa SoCs.

What We Engineer

• Real-Time Operating Systems (RTOS): Multi-threaded, deterministic embedded architectures on FreeRTOS, Zephyr RTOS, Azure RTOS (ThreadX), and bare-metal state machines.
• Low-Power Optimization: Duty-cycling, deep sleep state management, and clock gating to enable years of continuous battery life on coin cells and Li-Po batteries.
• Fail-Safe OTA Firmware Updates: Dual-bank flash bootloaders with cryptographic signature validation (ECDSA/RSA), CRC checks, and automatic rollback on corruption.
• Hardware Device Drivers & Buses: Custom, interrupt-driven drivers for I2C, SPI, QSPI, UART, CAN 2.0 / CAN-FD, RS-485, USB (CDC/HID), and custom proprietary fieldbuses.
• Silicon Root-of-Trust & Security: Secure boot, flash encryption, anti-tamper triggers, and integration with dedicated secure elements (e.g. ATECC608, TPM 2.0).

Supported Silicon & Platforms

• ARM Cortex-M: STM32 (F0/F4/G0/H7), Nordic Semiconductor (nRF52840, nRF5340, nRF9160 cellular)
• Wireless SoCs: Espressif ESP32, ESP32-S3, ESP32-C3 (Wi-Fi, BLE 5.x)
• RISC-V & Microchip: RP2040/RP2350, Microchip PIC & SAM series, TI MSP430
• Frameworks & Toolchains: GCC ARM Embedded, CMake, Clang, ESP-IDF, Zephyr SDK, Segger J-Link