Overview

The FMT parameter group (specifically FMT_VER or FORMAT_VERSION) is an internal system parameter for AP_Periph (DroneCAN) hardware.

Key Concepts

1. Storage Versioning

As firmware evolves, the way parameters are stored in Flash memory might change.

• FMT_VER: An integer that tells the firmware which "layout" of parameters is currently on the chip.
• Mismatch Behavior: If you flash new firmware that expects Format 2, but the chip has Format 1, the firmware will detect the mismatch and perform a "Factory Reset" (EEPROM wipe) to ensure data integrity.

Parameter Breakdown

• FMT_VER: Internal format version number.

Integration Guide

• Warning: Do not edit manually. Changing this value will likely wipe all your settings on the next reboot.

Developer Notes

• Library: Tools/AP_Periph.