Main idea of introduced changes is to ease adding support for new flash chips
Major changes:
- move implementation of all memory chip specific functions to memory config file (no weak functions)
- add support for 1-2-2 write
To handle timer rollovers the test tests-mbed_hal-common_tickers_freq
calls intf->set_interrupt(0). For this to work correctly the ticker
implementation must fire an interrupt on every rollover event though
intf->set_interrupt(0) was called only once. Whether an interrupt will
fire only once or multiple times is undefined behavior which
cannot be relied upon.
To avoid this undefined behavior this patch continually schedules an
interrupt and performs overflow detection on every read. This also
removes the possibility of race conditions due to overflowCounter
incrementing at the wrong time.
When the define LPTICKER_DELAY_TICKS is set deep sleep can be randomly
disallowed when using the low power ticker. This is because a Timer
object, which locks deep sleep, is used to protect from back-to-back
writes to lp tickers which can't support that. This causes tests which
assert that deep sleep is allowed to intermittently fail.
To fix this intermittent failure this patch adds the function
sleep_manager_can_deep_sleep_test_check() which checks if deep sleep
is allowed over a duration. It updates all the tests to use
sleep_manager_can_deep_sleep_test_check() rather
than sleep_manager_can_deep_sleep() so the tests work even if deep
sleep is spuriously blocked.
Test is giving problems in some networks. Could be that DNS server
is regarding repeated DNS enquiries on the test to be caused by
malfunctioning device.
This is solution to issue #7724.
Ticker free tests have been removed since ticker free function has been implemented only for CI boards.
Implementation for the remaining platforms will be done on feature branch feature-hal-ticker-free.
RTX waits, such as sem.wait(N), delays for between N-1 and N cycles.
As lp_ticker is not so accurate as us_ticker,
sometines, wait is expiring just before the lp_timeout.
In `ticker speed` test case execution time of ticker API functions is measured using Timer object. Test replaces original ticker handler for testing purposes, so test should not relay on higher level ticker based features(like Timer).
Use low level ticker API for time measuring.
DEVICE_EMAC is defined only for boards with default Ethernet emac.
It is not defined for example for Realtek RTL8195AM board that
does not have Ethernet. Removed the check for device emac from emac
greentea tests.
Made to prevent timeout if a single test case fails. The goal is that
each test case might wait only half of the remaining time reserved for
running TCP test cases.
In mbed-os-tests-mbed_hal-common_tickers/Microsecond ticker overflow test, some targets
would fail to catch specified ticker value near overflow in time and so fail. This commit
alleviates the issue by checking ticker value range rather than one exact ticker value near
overflow.
Serial buffer must be flushed before entering deep sleep mode. In the test this is done by the additional delay which is implemented on the busy loop which decrements given value down to 0 (`void wait_cycles(volatile unsigned int cycles)`). This solution is not appropriate since it is very target specific and the cycles value has been already increased few times. Additionally very big number of loop cycles which is suitable for fast targets may take much longer on slower boards and results in test timeout.
It has been verified that 20ms is sufficient delay for the green-tea transmission. In this test we cannot simply use `wait_ms(20)` since this potentially may put board to sleep and wake up using lp ticker. The test re-initialzies the lp ticker(disables ticker interrupt) and this operation may break the schedule and time tracing by the upper layer. But we can use us ticker which is not affected by this test. The solution is to add a delay routine based on busy loop and us ticker only. This way are able to wait exactly 20 ms.
Martin Kojtal
Cruz Monrreal
Maciej Bocianski
Donatien Garnier
Russ Butler
David Saada
Nir Sonnenschein
Mika Leppänen
Przemyslaw Stekiel
jeromecoutant
Veijo Pesonen
ccli8
Jimmy Brisson
Deepika