param_t is only used as an offset and we have <1000 params, so an uint16_t
is enough.
This saves roughly 1KB of RAM. We only do that on NuttX because normal
integers have better performance in general.
Previously on amd64, this was even 64bits because it was an uintptr_t.
We need to protect access to the param_values array. This is dynamically
allocated and resized (utarray_reserve() calls realloc). If some thread
was iterating the array while another was resizing the array, the first one
would iterate on a freed array, thus accessing invalid memory.
On NuttX this could lead to hardfaults in rare conditions.
Unfortunately we need to initialize the semaphore on startup, by calling
sem_init(). This adds a param_init() method called by every board/config
that uses the params (at least I think I've found all of them)
Remove the notion of legacy from the api. The board level code
will perform the traslation to lecacy format on the STM32.
new targets will not need to do this as there is no case
where the serial number were used by mfg for tracking.
Extend board common api to get mfguid and mfguid formatted
This adds an api that return the MFGUID as an array of bytes
or a string.
The data is returned with the MSD at index 0 and the LSD at
index PX4_CPU_MFGUID_BYTE_LENGTH-1.
Removed all reodering defines from the api and hal
This adds a src/board/<bebop|eagle|excelsior|rpi|sitl>/board_config.h
to configure the build as is done with the Nuttx targets
src/platforms/posix/include/board_config.h has been renamed to
src/platforms/posix/include/system_config.h to allow the common
posix defines to be included with the board specific defines.
Steps to debug:
* Run gazebo (or any other sim) server and client viewers via the terminal: `make posix_sitl_default gazebo_none_ide`
* In your IDE select `px4_<mode>` target you want to debug (e.g. `px4_iris`)
* Start debug session directly from IDE
This approach significantly reduces the debug cycle time because simulator (e.g. gazebo) is always running in background and you only re-run px4 process which is very light.
Beat Küng