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LeptonM7 Project

Lepton interface for the STM32F746G-DISCO board

Description

This project uses the STM32F746G-DISCO to acquire the thermal images from a FLIR Lepton module and displays it on the screen. It uses the Lepton Thermal Camera Breakout v1.3 from PURE Engineering (http://www.pureengineering.com/projects/lepton)

A prototype enclosure is also provided, in STL format, for 3D printing.

Pin mapping:

  • CS: "D10" - PA8
  • MOSI: "D11" - PB15 (Not required)
  • MISO: "D12" - PB14
  • SCLK: "D13" - PI1
  • SDA: "D14" - PB9
  • SCL: "D15" - PB8

Versions

  • v1.0: First working version, displays the image on the screen
  • v1.1:
    • Improved color representation using 6 colors (Black-Blue-Green-Yellow-Red-White) instead of 3 (Blue-Yellow-Red)
    • Added layout for buttons
    • Added level indicator on the left of the image
  • v1.2:
    • Changed the buffering principle to reduce SDRAM access
    • Fixed the gradient function not working after last compiler update

Known issues

  • Sync with the camera often not happening correclty at startup

Future work

  • Implement touch screen to select measurement points
  • Implement SD card and file system to save images