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Firmware ublox M8
Target
Purpose
Versions
Structure
OS and Libraries
Flashing
Interfaces
The firmware programs internal flash of the u-blox M8 GNSS chip. Location of this chip:
- in P3X and P3S it is on GPS Module board
- in other products, it is on their respective GPS boards
The firmware contains configurable operation code for various Global Navigation Satellite Systems: GPS, SBAS, QZSS, GLONASS, Galileo, BeiDou. It also implements a protocol with messages for communication over serial interface. The module can also receive a firmware update via the serial interface, although DJI firmwares never use this ability.
There are multiple versions released on the u-blox site.
| Marking | Packages | Timestamp | Overview |
|---|---|---|---|
| v2.01 | n/a | 2014-03-14 | In a significant change from previous firmware, this firmware supports parallel operation of any two of the supported GNSS systems. It also supports Chinese BeiDou system for the first time. |
| v3.01 | n/a | 2016-01-25 | This firmware supports parallel operation of any two of the supported GNSS systems. It also supports Galileo for the first time. |
The firmware is uncompressed and unencrypted. It starts with a header recognized by "UBX" magic value which contains parameters for the Flash Firmware Update Tool.
TODO
The firmware cannot be flashed by DJI firmware updates. It can only be flashed by Flash Firmware Update Tool provided by u-blox within the u-center GNSS evaluation software.
The flashing requires only serial connection to the chip, and a firmware file downloaded from u-blox website. It can be easily done with USB-to-TTL converter (aka FTDI interface) which supports 3.3V communication.
TODO
This page is created by drone enthusiasts for drone enthusiasts.
If you see a mistake, or you know more about specific subject, or you see an area for improvement for the wiki - create an issue in this project and attach your patch (or describe the change you propose).