Embedded Systems & Firmware

Write firmware for microcontrollers and RTOS applications. Configure peripherals, write interrupt handlers, implement DMA transfers, debug timing issues, and optimize power consumption for STM32, ESP32, FreeRTOS, and bare-metal targets.

This skill helps you build embedded and IoT firmware. It configures microcontroller peripherals, writes ISRs and DMA transfers, structures real-time systems on FreeRTOS or bare metal, debugs timing and concurrency issues, and optimizes for low power — targeting STM32, ESP32, and similar platforms.

When to use

Use when developing firmware for microcontrollers, implementing RTOS applications, configuring peripherals, writing interrupt handlers or DMA transfers, debugging real-time timing issues, or optimizing power on STM32, ESP32, FreeRTOS, or bare-metal targets.

Examples

ESP32 sensor over FreeRTOS

Read a sensor on a real-time task

Write FreeRTOS firmware for an ESP32 that samples an I2C temperature sensor on a periodic task and publishes readings over MQTT

DMA + interrupt handler

Set up efficient peripheral I/O

Configure DMA-driven UART reception on an STM32 with a circular buffer and an idle-line interrupt, and explain the timing