Commit graph

15 commits

Author SHA1 Message Date
KonstantinKondrashov
696d6867b4 esp_timer: Fix System time jumps back ~54secs
Closes: https://github.com/espressif/esp-idf/issues/2513
2019-10-29 17:17:26 +00:00
Ivan Grokhotkov
d3724dc35d esp_timer: fix occasional failures in "monotonic values" test
1. ref_clock used in unit tests occasionally produces time off by ~100
microseconds shortly after being started. Add a delay to let
ref_clock stabilise, until the cause is found.

2. Reduce roundoff error accumulation which would occasionally cause
the test to fail, by choosing an overflow value which can be divided
by APB frequency.

3. Move time sampling part of the test into an IRAM function to
reduce variations due to cache behavior.

4. Remove calculation of "standard deviation" in the test, as what was
calculated was not actually standard deviation, and it did not add any
useful information.
2019-02-26 02:01:29 +00:00
Le-Andrew
a8da9c1b96 Fixed typos on booleans.
Merges https://github.com/espressif/esp-idf/pull/2067
2018-07-09 14:36:06 +08:00
Ivan Grokhotkov
141e51b468 esp_timer: reduce overflow value in unit tests
This allows testing for race conditions which occur near timer
overflow point more effectively.
2018-06-11 02:37:19 +00:00
Ivan Grokhotkov
125bbf0882 esp_timer: don’t busy loop in esp_timer_impl_set_alarm
Previously the loop in esp_timer_impl_set_alarm was necessary to catch
the case when timer count wraps around (goes from 2^32 - 1 to 0).
Since ALARM_OVERFLOW_VAL was reduced from 2^32 - 1 to 0xefffffff,
this is no longer necessary.

Fixes https://github.com/espressif/esp-idf/issues/1891
2018-06-11 02:37:19 +00:00
Ivan Grokhotkov
8c307a5720 sleep: fix deadlock in esp_timer_impl_advance after light sleep
When light sleep is started, the other CPU gets halted using DPORT
stall mechanism. This can happen while it is inside an esp_timer
critical section, which may lead to a deadlock. This change adds
functions to take and release esp_timer lock before entering
DPORT critical section, preventing the deadlock.
2018-05-09 22:52:50 +08:00
Ivan Grokhotkov
296b280801 esp_timer: fix esp_timer_impl_advance not triggering expired timers 2018-05-09 22:52:41 +08:00
Ivan Grokhotkov
487210221b esp_timer: add internal function to adjust time 2018-04-26 18:52:45 +08:00
Ivan Grokhotkov
2d598d6fb7 esp_timer: use _ISR version of port{ENTER,EXIT}_CRITICAL from ISR 2018-04-19 18:28:55 +05:30
Tian Hao
127d213b29 component/esp32: fix esp_timer bug
1. fix the bug that cause esp_timer_get_time is not accuracy(the max margin may be 106s).
2. fix the bug that causes esp timer come too early.
2018-02-28 10:49:45 +08:00
Jack
0a1f81dc01 esp_timer:fix three bugs about timer get and timer alarm where overflow is not correct 2017-12-19 20:05:55 +08:00
Ivan Grokhotkov
eb0c34e5c9 esp_timer: add support for frequency scaling 2017-10-18 14:19:18 +08:00
Angus Gratton
094cf4d79d wifi/bt coexistence: Fix disabled cache access race when writing to flash
Moves the ets_timer_arm() / ets_timer_disarm() code paths to RAM

Overhead is 740 bytes of IRAM, 0 bytes DRAM

(For comparison: If all of esp_timer.c is moved to RAM, overhead is 1068 bytes IRAM and 480 bytes DRAM.)
2017-10-16 19:47:33 +08:00
Ivan Grokhotkov
1af6384349 esp_timer: lock-free implementation of esp_timer_get_time
The implementation of esp_timer_get_time used a critical section, which
resulted in a call time of ~1.8us. To make esp_timer_get_time more
useable as a high-resolution time source, this change replaces the lock
with polling. Call time is reduced to ~0.7us.
2017-09-01 10:34:36 +08:00
Ivan Grokhotkov
857a29872d esp_timer: add high resolution software timer API 2017-08-28 11:35:26 +08:00