- Unecessary definitions are removed.
- Since the 48-bit RTC hardware timer uses a RC oscillator as clock, it is pretty inaccurate and leads to a RTC time deviation of up to 3 seconds per minute. Therefore, a calibration during the boot time determines a correction factor for the 48-bit RTC hardware timer. Function _rtc_time_to_us uses now this correction factor and converts a raw 48-bit RTC time to a corrected time in microseconds. Thus, the 48-bit RTC timer becomes much more accurate, but it can't still reach the accuracy of the PLL driven 64-bit system timer. The Advantage of using RTC over 64-bit sydtem timer is that it also continues in deep sleep mode and after software reset.
- If the 64-bit system timer is used to emulate the RTC timer, it uses the RTC hardware timer to continue its operation after software .
It is possible to use different timers as RTC timer for the periph_rtc module. Either the 48-bit RTC hardware timer is used directly or the PLL driven 64-bit system timer emulates a RTC timer. The latter one is much more accurate. Pseudomodule esp_rtc_timer controlls which timer is used. Only if esp_rtc_timer is enabled explicitly, the 48-bit RTC hardware timer is used. Otherwise the 64-bit sytstem timer is used to emulate the RTC timer.
The explicit call of rtc_init during the CPU start was removed because rtc_init is called within the function periph_init. The display of the system time at startup had to be placed after the call to periph_init.
There is an existing function that returns the system time in us as a 64 bit value. Converting this 64 value in us to a 32 bit value in ms is more easier and uses the complete 32 bit range. Using only the low part of the 64 bit system time in us and dividing it by 1e3 cuts the 32 bit range.
b-l475e-iot01a can become unflashable when hardfaults occure.
To make sure flashing succeeds `connect_assert_srst` is called
before connecting to flash through openocd.
For some boards `make reset` is only possible if a serial connection
is not already open or its execution might disrupt it. This
causes some tests to fail since before running a test the board
is reset.
`make reset` is currently used as a synchronization mechanism between
the application and the test script. With `test_utils_interactive_sync`
this is no longer needed so call `make reset` before `cleanterm` instead
of after when `test_utils_interactive_sync` is used.
Allow setting TESTRUNNER_RESET_AFTER_TERM=1 to keep the previous
behaviour for `examples/%/tests`.
Having the definitions sit in the `net/gnrc/sixlowpan/frag.h` header
does not make much sense, when using Selective Fragment Forwarding
(and the fragmentation buffer already includes a
`net/gnrc/sixlowpan/frag/stats.h` header), so they are moved to their
own header. Since with this change it makes more sense to have the
statistics stored in their own sub-module, the pseudo-module is also
actualized.
On `native` when using `vfs` the `fmt` print functions do not work.
This is because the `fmt` module uses the `write()` system call which
is bend by the `native_vfs` module to use `vfs_write()`. However,
`native` does not use a `stdio` module to print. Instead, it just
writes to the hosts standard I/O directly. As such, STDIN, STDOUT, and
STDERR are never initialized for `vfs` so `vfs` does not recognize
`STDIN_FILENO`, `STDOUT_FILENO` and `STDERR_FILENO` as valid file
descriptors.
This test case showcases this bug.
