pico-flight

How To Build

• Current two ways to build
• For device RPi pico board
• Tools
  • PF_BUILD_TOOLS=ON

• Investigate using "target or platform" instead of custom variable

Firmare for RP2040 (Pico)

mkdir builds
mkdir builds/firmware
cd builds/firmware
cmake ../..
make

Tools

mkdir builds
mkdir builds/tools
cd builds/tools
cmake ../.. -D PF_BUILD_TOOLS=ON
make

Plans

• PIO based on screen display
  • Vertical and horizontal sync tracking of existing NTSC/PAL signal
  • First steps to attempt to get simple "tvout" signal working, try starting from vga examples
  • Minimum voltages required

    Status	Voltage	Notes
    	NC	Not connected, leave existing signal intact
    	0V	sync level
    	1V	Black/Blanking
    	3.3v	White

  • Still has some v-sync issues, probably from end of frame to start of next frame timing inconsistencies.
    • Convert to chained dma transfer to automatically restart the frame.

      Pacing timers only govern when an individual transfer happens, not the entire channel trigger

• PIO based camera stream
• Configuration Protocol
  • Device maintains schema for transmition to configurator (any other device)
  • Key Value pairing treat like register map

  • Telemetry

  • Add config data to telemetry

    • Allow device to accept value mod messages to write to config data
    • Add littlefs for flash file storage
      • Read/Write to "file" all config vars
        • Write of text based config vars
      • Logging to flash/sdcard

  • Configurator

    • Native
      • Openframeworks based via serial port with read/write support
        • OF dependency is pretty large and I lost the ofApp.cpp file :(
      • Reimplementing using https://github.com/Immediate-Mode-UI/Nuklear and SDL/OpenGL
      • Reimplemented using Dear Imgui
        • Debug why settings not applying on device when sent from tool

  • Web

    • usb network endpoint
      • basic http server
      • route handling for subsystems

  • Host on device flash

    • Store current settings in human readable format.
    • Keep a backup of last settings?

Pico Pinouts