6 Commits

Author	SHA1	Message	Date
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