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0c40b2ec9dcff8e8dd2db7ced3ce601a4e824832
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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