George timmermans
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Arduino Bit Bang Serial Driver

For an assignment for my embedded systems course we were required to write our own bit bang serial driver for an Arduino Uno. As the assignment progressed, more and more requirements were added. The final driver consists of:
  • 2400 Baudrate generated by timer interrupt
  • 1 start bit, 8 data bits, 2 stop bits, no parity
  • Circular buffer for data input
  • Circular buffer for data output
  • State machine to reduce CPU load
Picture
Final result. Channel 1 is used to measure CPU execution time.

Code

The code is available on my github page here.
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  • About Me
    • Resume
    • Press releases
  • Blog
  • Projects
    • Long Range WiFi Link
    • Embedded Systems >
      • Photo Booth
      • Classroom VU meter
      • USB Media Controller
      • Weather Station
      • Arduino Swimming Pool Controller
      • GRBL Android Controller
      • Arduino Serial Driver
      • Arduino Multitasking
      • 8x8x8 LED Cube
      • Analog -> Digital Geiger Counter
    • 3D Printing >
      • Simplify3d Configuration
      • 3D print repairs
    • Home Brewing >
      • Mead Recipes >
        • Cinnamon Mead
        • Sweet Chili Mead
        • Lemon & Ginger Mead
        • Mead Liqueur
        • Honey Beer
      • Glühwein (Spiced Wine)
      • Limoncello
    • House
    • Toolmaking
    • Laser Cutting
  • Weather Cam
  • Contact