- same pattern as other new drivers (state machine, checked register mechanism, no sleeps, etc)
- self test has been rolled into regular startup sequence
- still I2C only, but will be expanded in the future
- configure to high accuracy preset
- currently the main change is that it reduces the max number of ORB multi instances to 4, but usage will be expanded as needed
- limits number of EKF2 multi instances to 2.
- enabled on all cortex m4 boards
- simple state machine to reset, configure, etc
- checked register mechanism (sensor will reset itself on configuration error)
- configured in 16 bit mode (1320 LSB/Gauss instead of 330 LSB/Gauss)
- adjusted orientation handling in driver to match datasheet as closely as possible
- in many external compass units the rotation was wrong and very difficult to actual determine how to set correctly
- always check with state machine before reboot/shutdown
- respect BOARD_HAS_POWER_CONTROL (shutdown from command, low battery, power button)
- px4_shutdown_request add optional delay and always execute from HPWORK
- px4_shutdown_request split out px4_reboot_request
- increase stack sizes to run cleanly under stackcheck
- this is likely overkill for most boards, but using stackcheck to set our minimum ensures we have a very safe margin on regular builds and it's something we can currently afford
- remove holybro_durandal-v1_stackcheck from test rack (there's only one unit)
- interupt pin set active low and latch
- relax retry timeout if configure failed
- improve configured empty rate (sample rate) rounding
- fix RegisterCheck
- check FIFO count as part of full transfer and reset or adjust timing if necessary
- rename DRV_IMU_DEVTYPE_ICM20608 -> DRV_IMU_DEVTYPE_ICM20608G
- update to NuttX with stm32f4 and stm32f7 SPI DMA internal buffers
- remove explicit DMA buffer allocations from new IMU drivers
- restore original BOARD_DMA_ALLOC_POOL_SIZE
- decrease SPI DMA thresholds based on fmu-v2/v3/v4/v5 bench testing
Daniel Agar
Matthias Grob
David Sidrane
Tanja Baumann
SalimTerryLi
Beat Küng
mcsauder
Hyon Lim