This formulation of the notch equations lets the user specify the depth of the Notch. The presence of a diveide by A prevents the gain going to zero and therefore achieving a perfect notch. It also provides the risk that a user may attempt to do this and cause a divide by zero error. This change adds the ability to achive a perfect notch and removes the possibility of a divide by zero.
Add Notch Filter parameter checking
This delegates updates to a bank of NotchFilters located at an rpm frequency and harmonics. Center frequency can be updated dynamically. Notch parameters are configurable, including the number of harmonics to filter on. Updates to the filter parameters are optimized across the notch bank. Convert notch bandwidth and frequency to floats.
allow all filter harmonics to be controlled.
add destructor to harmonic notch.
don't allocate sub-filters for harmonic notch if no harmonics set.
The header needs stdint.h which it was only getting because it was
included after stdint.h in the cpp file.
Stop including standard headers before other ArduPilot headers
we need to return the number of bytes that would have been printed if
the buffer was big enough to support use cases such as vasprintf()
which needs to know how many bytes to allocate
If there is another thread holding a lock that the main thread wants to
take while pretending to be the IO thread, we will wait forever as we do
not move SITL time forward while pretending to be the IO thread.
This patch simply allows time to move forward if we've failed to take a
semaphore immediately and need to wait.
this allows for common code between CAN and pin safety switches, as
well as making the code neater as most of the logic is related to
AP_BoardConfig options
Andy Piper
Leonard Hall
Randy Mackay
Andrew Tridgell
Peter Barker
Peter Hall
Rajat Singhal
ken