Hardware/software projects
2022 - ...

• rp2040/2350 Microcontroller
  My projects include:
  • Basic setup of the pr2040 and WIFI.
  • The task threader
  • VGA graphics and graphics input devices
  • External memory (FRAM, SD card, USB stick)
  • Networking using WIFI (TCP, UDP, web server, NTP)
  • USB host conrollers for mouse, keyboard, USB drives.
  • DSP, sound synthesis
  • PIO use
  • Interpolator use
    
    
• rp2350 Microconttoller only
  Projects specific to rp2350:
  • Basic toolchain setup now handled by VScode extension
    OpenOCD docs are also useful.
  • Protothreads 1.3 just works.
    BUT you need a 10 mSec sleep upon entering main.
  • VGA graphics port requires minor timing changes in the low-level driver.
    And more memory means more graphics possibilities.
  • Fixed point and floating point arithmetic are about the same speed, but fixed
    is slightly faster in some cases.
• Analog
  • Antialiasing a ADC input
  • Building a motor controller
    
    
• Older rp2040 work with Micropython and Adruino/MBED
  • Stepper motor conrol
  • NTSC television generation
  • CEPSTRAL extraction of vowel format frequencies

Copyright Cornell University April 30, 2025