add bi-directional dshot
add back in features.
juggle DMA allocations to allow CRSF to work correctly
disable dshot on PWM 10 as it is not used
do not enable quadplane by default
do not disable arming checks
run ICM42688 at 1Mhz for low speed to avoid gyro noise
add HEEWING README and picture
this was already done on many (most?) boards, and greatly reduces DMA
sharing which improves performance of UARTs. This changes the default
to no DMA on I2C
this fixes an issue where a lua library function triggers an exception
after it does a math operation which changes the floating point
registers on M7 MCUs (such as STM32H7). An example is math.random()
which calls math_random(), which pre-calculates a double value before
checking if the arguments to the call are valid. When it then checks
and finds invalid values the exception longjmp does not restore the
floating point registers.
this limits the amount that rate gains can reduce from the original
values in a quicktune. Large reductions in rate gains can be
incorrectly triggered by a frame resonance or gust of wind which can
result in gains that are dangerously low, which can trigger an angle P
oscillation
The check for the aircraft being lined up for a tangent exit has an early breakout condition if the next waypoint is too close to the loiter circle which can prevent the required ground course to waypoint ever being achieved. This check was using the WP_LOITER_RAD parameter value, not the actual radius being used which can be set differently by the mission plan. If a large value for WP_LOITER_RAD was set and being over-written by the mission plan with a smaller value compatible with the distance to the next waypoint, the aircraft would still exit early.
this fixes a bug where TECS maintains its slow integrator while in a
VTOL hover mode in AUTO or GUIDED.
Among other things this affects PAYLOAD_PLACE and
DO_VTOL_TRANSITION. In those states the height can change while
hovering outside the control of TECS. When TECS regains control in a
fwd transition then can lead to a very large height loss or gain until
the TECS integrator can catch up
