4 commits

Author	SHA1	Message	Date
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