Commit graph

12 commits

Author SHA1 Message Date
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