Embedded Systems & Microcontrollers for Robotics
Write hard real-time C++ firmware, manage hardware interrupts, CAN bus, and FreeRTOS for robotics hardware.
Dive deep into bare-metal registers, DMA transfers, FreeRTOS tasks, hardware PWM timers, CAN bus communication, and ultra-low-latency motor controller firmware on ARM Cortex-M and ESP32.
Roadmap Curriculum & Milestones
Complete each sequential phase to build production-grade robotics competencies.
Phase 1: Bare-Metal ARM Cortex & Register Manipulation
Directly configure timers, clocks (RCC), GPIO, and ADC registers without relying on slow abstraction layers.
STM32 Architecture, Clocks & Memory-Mapped I/O
Understand the Cortex-M core, memory maps, system clock trees, bit-banding, and direct register configuration.
- Memory Mapped I/O
- SysTick Timer
- Clock Tree (PLL/HSE/HSI)
- Bit Masking & CMSIS
- Bare-metal high-speed PWM generator on STM32F4
Direct Memory Access (DMA) & Nested Vector Interrupts (NVIC)
Offload CPU processing for ADC multi-channel sensor sampling and high-speed UART/SPI sensor streaming with zero CPU overhead.
- DMA Circular Buffering
- NVIC Priority Grouping
- ISR Latency Optimization
- Volatile Keyword & Race Conditions
- Non-blocking 1MSPS ADC audio/vibration sensor stream over DMA
Phase 2: Real-Time Operating Systems (FreeRTOS)
Architect multi-threaded firmware with preemptive priority scheduling, semaphores, mutexes, and queues.
FreeRTOS Tasks, Mutexes, Queues & Event Groups
Design deterministic robotic firmware: separating sensor acquisition, PID control loop, and telemetry into prioritized tasks.
- Preemptive Task Scheduling
- Queue Thread-Safety
- Binary & Counting Semaphores
- Priority Inversion & Mutex Inheritance
- Deterministic 1kHz PID motor control task with telemetry queue
Phase 3: Industrial Fieldbuses (CAN Bus & micro-ROS)
Transmit real-time telemetry across multi-joint robot networks using Controller Area Network (CAN) and micro-ROS.
CAN 2.0B / CAN-FD & Actuator Protocols
Implement differential signaling CAN bus transceivers, standard/extended ID filtering, and robust checksum validation.
- CAN Bus Physical Layer & Termination
- CAN Message Arbitration
- micro-ROS on ESP32/STM32
- DDS-XRCE Agent Bridge
- Multi-node CAN actuator bus connecting 4 BLDC motor drives to ROS 2
Ready to begin Phase 1?
Dive into our free hands-on tutorials and build your first physical prototype.