Use esp_timer_get_time as time source for micros and mills #1424
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Awesome! How long does it take to call |
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Awesome! How long does it take to call esp_timer_get_time? It must not take more than a microsecond or two or it will make delayMicroseconds() inaccurate
Also please remove this line: https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/main.cpp#L17
esp_timer_get_time returns monotonic time in microseconds, as a 64-bit number. It can be called from tasks and interrupts, does not use any critical sections/mutexes, and is thread safe.
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We have a unit test in IDF which checks that
Done, PTAL. |
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Awesome! Just need Travis to get done building :) |
…#1424) esp_timer_get_time returns monotonic time in microseconds, as a 64-bit number. It can be called from tasks and interrupts, does not use any critical sections/mutexes, and is thread safe.
esp_timer_get_timereturns monotonic time in microseconds, as a 64-bit number. It can be called from tasks and interrupts, does not use any critical sections/mutexes, and is thread safe. Calls to it can be made while cache is disabled. Since IDF commit espressif/esp-idf@0d65f3b, the time returned by esp_timer is also updated after light sleep: it appears to the application as if the timer was running during light sleep.