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📝 Phase 1 – STM32 Foundations

• Completed the Udemy course on STM32 bare-metal driver development.
• Key topics: GPIO configuration, RCC/clock trees, USART/UART, DMA, timers, I2C/SPI, NVIC/interrupts.
• Deliverable: Summary.pdf – contains notes, concepts learned, and key challenges.

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📝 Phase 2 – UART Driver Development

• Implemented a bare-metal UART driver for loopback testing.
• Configurations:
  • Baud: 9600
  • Data format: 8N1 (8 data bits, no parity, 1 stop bit)
  • Data buffer: 50-byte test string
• Parts implemented:
  • Polling-based loopback
  • Interrupt-based loopback
  • DMA-based loopback (with circular mode exploration)
• Deliverables:
  • Source files (polling_uart.*, interrupt_uart.*, dma_uart.*)
  • README.md explaining:
    • GPIO speed vs signal integrity
    • Baud rate calculation
    • DMA NDTR usage
    • USART error flags and recovery
  • Demo video + debugger screenshot

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📝 Phase 3 – STM32 Custom Board Design

• Designed a 2-layer PCB with STM32F405 MCU, including:
  • 3.3V LDO regulator
  • 8 MHz crystal
  • Reset button
  • SWD debug header
  • UART header
  • Power and user LEDs
  • USB interface
• Deliverables:
  • schematic.pdf and pcb_layout.pdf
  • bringup_notes.md (assumptions, component reasoning, pinout diagram, bring-up checklist, routing notes)
  • gerber_files/ for fabrication
  • 3d_render.png (optional)

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✅ Submission Notes

• Each phase is in its own folder with clear structure.
• Code is well-documented with comments.
• Markdown notes include pinout diagrams and bring-up instructions.
• Gerbers are fabrication-ready and verified in Gerber Viewer.
• Without the git attributes file, loopback.mp4 would not be pushed(needed git lfs, due to its size).

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