MAX8U Driver¶

This driver supports a wide range of functions provided by the MAX8U chip. Most of the essential features are supported. It lays a framework to add more commands easily, with only a little extra work.

Driver was originally made for the USC Rocket Propulsion Lab by Adhyyan Sekhsaria and Jamie Smith

Features¶

Currently supports:

• Getting coordinates in latitude, longitude, accuracy...
• Velocity measurements in each axis
• Individual satellite information
• Time of last message
• Antenna Power Status
• GPS Fix Quality
• Save configuration in memory

Documentation¶

Full documentation is available here

Usage¶

Code Structure:

update() to be called periodically by the user. Processes and reads all the messages currently stored in the GPS. Calls processMessage() on every message. processMessage(): processes the message currently in the buffer by calling the respective functions. Each message is read, and its relevant information is then stored in the public variables.

In factory settings, the module is not configured to send any messages. For the GPS to give updates, we need to configure it by sending messages using setMessageEnabled() which internally calls sendMessage() and waitForAck().

By default, the GPS sends messages in NMEA format (but we reconfigure it to UBX format), so readNextMessage() has to determine which format the message is.

Example¶