Make: fix incremental builds, add build tests
Four semi-related build changes in one:
* Add basic tests for make system sanity (can be expanded as we find corner cases)
* Fix incremental building of bootloader when source files change
* Don't regenerate component libraries or re-link the ELF file if nothing changed
* Rename `$(vecho)` to `$(summary)` and add a new `$(details)` macro to echo some helpful build details when V=1.
See merge request !20
The thread-local-storage feature in FreeRTOS attaches an application-usable array of pointers to a thread control block. These pointers usually point to a structure the thread allocates. When a thread gets (voluntarily or involuntarily) destroyed, this memory can leak. This merge adds a matching second array of user-settable pointers to destructor routines. As soon as the task gets cleaned up (which happens in the idle thread), the destructors get called and the memory can be freed.
See merge request !19
Add cr after a lf is printed (configurable)
Small menuconfig option to make the newlib stdout functions replicate the behaviour of ets_printf e.a. by sending out a \r before every \n.
See merge request !14
This commit fixes several issues with state handling in nvs::Page. It also adds extra consistency checks in nvs::PageManger initialization.
These changes were verified with a new long-running test ("test recovery from sudden poweroff"). This test works by repeatedly performing same pseudorandom sequence of calls to nvs_ APIs. Each time it repeats the sequence, it introduces a failure into one of flash operations (write or erase). So if one iteration of this test needs, say, 25000 flash operations, then this test will run 25000 iterations, each time introducing the failure point at different location.
rtos: change XT_CLOCK_FREQ from 13MHz to 80MHz
Freq has been change to `80MHz` in system_init, otherwise system tick will not be accurate now.
Maybe we can config freq by menuconfig.
See merge request !8
