Allow tickers to specify their native frequency and number of bits.
This allows the conversion to happen in common code rather than in
each vendor's implementation.
2 test cases added, one for event in the past, one for event in future but very close
to the current time, thus once is set, it is already in the past, and we fire
interrupt immediately.
This test was removed because of its memory footprint.
Most of the memory consummed by the test itself was related to the instantion of test cases in RAM.
With the introduction of case_t which allows tests cases to live in FLASH, the memory footprint has been drastically reduced (860 bytes of RAM saved) and the ticker test can be reintroduced in the code base.
This is temporary, as this test does not fit to some 16kB RAM devices. This requires few more steps: some small devices are using big async HAL structures, RTX changes increased the RAM footprint, plus this test seems to be too big. With all these, it won't fit in RAM regions for some devices.
Martin Kojtal
Russ Butler
Marc Emmers
Martin Kojtal
Vincent Coubard