ArduPilot configures a connected DroneCAN GPS based on its GPS Type.
Given parameter name changes, ArduPilot must be able to configure both new and old AP_Periphs, and new AP_Periphs have to cope with being configured by old ArduPilots.
this allows for redundent RTCM links (eg. WiFi and SiK links for light
show drones) without causing corruption into the GPS.
If the GPS_DRV_OPTION bit is set then we instantiate a separate RTCM3
decoder per mavlink channel, and only inject when we get a full packet
that passes the RTCM 24 bit CRC
* Zero every iteration in case GPS quality degrades or fix is lost
* Use float precision for now
Signed-off-by: Ryan Friedman <ryanfriedman5410+github@gmail.com>
This moves us towards being able to compile the GPS library without having the MAVLink headers available. We shouldn't need those headers when building for Periph.
If the headers are available then we ensure our values match mavlink so we can do a simple cast from one to the other
The initialisation of the GPS_Fix enumeration is made from the mavlink headers.
We should probably move away from this, converting from our own enumeration to the mavlink enumeration when required (emitting mavlink packets and receiving in AP_GPS_MAV)
This means we don't need the goto to handle the case of a detected GPS,
and it also allows for restructure remove the "else" statements, which
will allow compilinmg out the uBlox driver
this changes yaw handling in a few ways:
- GPS yaw now has a timestamp associated with the yaw separate from
the timestamp associated with the GPS fix
- we no longer force the primary to change to the UBLOX MB rover when
it has a GPS yaw. This means we don't change GPS primary due to GPS
loss, which keeps the GPS more stable. It also increases accuracy
as the rover is always less accurate in position and velocity than
the base
- now we force the primary to be the MB base if the other GPS is a
rover and the base has GPS lock
Also swaps to using an AP_Enum for the SBAS type, and fixes up the fact
that the prearm/failure reasons should be using the config step, rather
then the init blob index
