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D5 - Implementation

Technology Stack​

  • MCU: Espressif ESP32-C6 (RISC-V).
  • Framework: ESP-IDF (C++17).
  • Build System: PlatformIO.
  • Documentation: Docusaurus.

Development Process​

Lead: Denis Ivan

We follow a feature-branch workflow.

  1. Core Logic: Implemented first to ensure stable UART bridging.
  2. Drivers: Custom drivers written for the display to maximize frame rates.
  3. Integration: Combining Bluetooth and Serial tasks on separate FreeRTOS cores (or cooperative scheduling on single-core C6).

Challenges Solved​

  • High-Speed UART: Optimized ISRs to handle 921600 baud without dropping packets.
  • Display Flicker: Implemented DMA (Direct Memory Access) for screen updates to offload the CPU.
  • Memory Management: Careful tuning of stack sizes for FreeRTOS tasks to fit within the ESP32-C6 RAM constraints.