If user has initiated a delayed event (either with call_in or call_every),
user might need to know how much time is left until the event is
due to be dispatched.
Added time_left() function can be used to get the remaining time.
CPUID base register is available for Cortex-M processors only.
Cortex-A devices have Main ID Register, which can be used in future to
get processor info.
Currently test assumes that 1 sec is long enough to set RTC time and read same time which has been set.
In some cases extra time for synchronisation between clock domains is needed and after setting/reading operations the read value might be different than one which has been set (+1 sec).
Additionally in some cases when lp ticker is based on RTC, the RTC implementation may use mechanism to trace elapsed seconds without modifying RTC registers. In such case it is possible that second will change immediately after setting time.
Add 1 sec tolerance (min possible) for such checks.
The unified NRF51 target and feature BLE directories have been
reorganized to follow the naming and directory structure of the
NRF52 implementation.
This reorganization does not include TARGET_MCU_NRF51822 and
derived targets.
The flash clock test is disabled for the NRF52 series. This change
re-enables the test but with a higher tolerance to accommodate the
high jitter on the current ticker implementation.
Previously, the echo test followed a flow like the following:
-STEP- -HOST PC- -DEVICE-
0 send _sync
1 echo back _sync
2 send echo_count
3 echo back echo_count
4 send first echo packet
5 echo back echo packet
(repeat echo steps)
However, as noted by issue #6659, this test would somtimes fail between
steps 4 and 5. To ensure each KV pair makes to the correct destination,
we usually write the KV back. Step 4 does not wait for this to happen
and starts sending echo packets. So the device is acting as the "echo
server".
This change makes the host PC the "echo server". The idea being that the
device will be slower and the host pc should always be able to keep up
with it, not the other way around.
Update the SysTimer test to match the updated API. Changes are:
- increment_tick() renamed to _increment_tick() and explicitly
synchronized
-update_tick() replaced with resume() and a call to suspend() was added
before this
sleep_manager_racecondition test fix for devices with low CPU clock
This RP contains fix for sleep_manager_racecondition test
for very slow devices (like NRF51). It fixes the test itself
as well as side effects of fix introduced in
#5046 (us ticker: fix fire interrupt handling)
The idea of the test was to test race condition between main thread
and interrupt handler calling the same function.
To efficiently test this, each handler call should interrupt
main thread to make race more likely.
On very slow devices (like NRF51) when we set very low ticker period
(e.g less then 1000us for NRF51) there is no much time for thread scheduling.
On such slow devices, setting period to 500 us cause that
main thread is scheduled very rarely and only handler is
constantly called making test unreliable.
Fix introduced in #5046 (us ticker: fix fire interrupt handling)
changed fire_interrupt function implementation causing more
interrupt tailing thus even less time for main thread scheduling.
After introduction of #5046 (us ticker: fix fire interrupt handling)
when running sleep_manager_racecondition test on NRF51
(with ticker1.attach_us(&sleep_manager_locking_irq_test, 500);)
test is failing with timeout due to the fact that interrupt
handler is constantly called and main thread is never scheduled.
Kevin Bracey
Cruz Monrreal
Kimmo Vaisanen
Deepika
David Saada
Przemyslaw Stekiel
Marcus Chang
Andrzej Kurek
Martin Kojtal
Brian Daniels
Filip Jagodzinski
Russ Butler
Cruz Monrreal
Martin Kojtal
Bartek Szatkowski
Shrikant Tudavekar
Maciej Bocianski