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