we now can exit an underspeed condition if we stay above min speed for
3 seconds and also reach 15% above min speed. This prevents a problem
with the thrust line causing downpitch leading to a crash due to too
much throttle
Initialization was also changed a little bit so we don't try to
initialize 25 times. We rather use the same methods as in the
AP_InertialSensor drivers.
Also move up the call to is_zero() in read_raw so we don't set
_mag_[x|y|z] in case of failure.
These are not used. The only place where raw fields are used are in the
compass calibrator and we don't need to store them.
Additionally remove duplicated documentation about the meaning of the
functions to avoid them getting out of sync.
We still need the BusDriver (in some places called SerialBus) interface
since this driver can also be used on an AuxiliaryBus and that has a
different interface.
- Capitalize and rename constants
- Make clear what gain is applied in calibration and what is the
"normal" gain
- Make the separation between HMC5883L and HMC5843 explicit when it
makes sense to improve readability
- Remove spurious delay in calibrate function
We still need the BusDriver (in some places called SerialBus) interface
since this driver can also be used on an AuxiliaryBus and that has a
different interface.
Besides the usual conversion some more improvements:
- Use generic function to convert endianness
- Minor cleanups
- Reorder per-board ifdefs in compass instantiation: distinguish when
there's a default compass to when it should probe other compasses
The find_realexec_path function was used for finding the toolchain path mostly
because of two reasons:
1) We couldn't really use CXX or CC variables because the user could set those
from the OS's environment and Waf wouldn't look for the executable file in
that case.
2) Our CI configuration sets up symlinks for ccache and find_realexec_path
works around that issue.
The bad side about using find_realexec_path() is that, besides working aroung
symlinks, it does the same thing that is done by Waf. This patch removes the
dependency for such a function by addressing each of the reasons above stated:
1) We create a local copy of os.environ and, if there's a variable with the
same name we are using, we remove it from the local copy.
2) As done before, we are looking for the cross ar program instead of gcc
program, since that is not used for ccache symlinks.
This is a better approach than checking command line options
--check-cxx-compiler and --check-c-compiler. Those values expect a list of
compilers to try instead of the compiler to use.
The benefits of this approach are:
- Allowing correct use of options --check-cxx-compiler and --check-c-compiler.
- Allowing user to pass CXX and CC environment variables, which is a common
way of selecting the compiler.
- Configuration is done *and committed* only for the specific compiler.
This is a better approach than checking command line options
--check-cxx-compiler and --check-c-compiler. Those values expect a list of
compilers to try instead of the compiler to use.
The benefits of this approach are:
- Allowing correct use of options --check-cxx-compiler and --check-c-compiler.
- Allowing user to pass CXX and CC environment variables, which is a common
way of selecting the compiler.
- Configuration is done *and committed* only for the specific compiler.
It makes more sense the toolchain Waf tool to be responsible of loading the
compilers. Furthermore, that allows toolchain tool to have control on doing
configuration before and after loading compiler tools.
Andrew Tridgell
Peter Barker
Gustavo Jose de Sousa
Lucas De Marchi