Overview

The DRV parameter group (specifically DRV_OPTIONS or GPS_DRV_OPTIONS) provides a mechanism to enable experimental features or workarounds for specific hardware drivers (primarily GPS).

Key Concepts

1. Driver-Specific Flags

The meaning of the bits depends heavily on the specific GPS driver being used (u-Blox, SBP, NMEA).

• Examples: Enable/Disable specific NMEA messages, change baud rate negotiation, or enable experimental constellations (Galileo/BeiDou) if the driver doesn't support a dedicated parameter for it.

Parameter Breakdown

• DRV_OPTIONS: Bitmask.

Integration Guide

• Documentation: Refer to the full parameter list for your specific firmware version to see what the bits do. It changes frequently.

Developer Notes

• Library: libraries/AP_GPS
• Scope: Used inside AP_GPS_uBlox.cpp, etc.