Meaning of TG[group_num]->hw_timer[timer_num].update = 1

[akashdeepsingh]

Can someone explain what this line of code does:

Code: Select all

TG[group_num]->hw_timer[timer_num].update = 1;

It is a part of the timer_get_counter_value() function here: https://github.com/espressif/esp-idf/bl ... er/timer.c

[ESP_igrr]

When 1 is written to this field, contents of the 64 bit counter are copied into cnt_high and cnt_low registers. Then you can read these registers and combine them into a 64-bit variable. You can think of this as a way to read two 32-bit values at the same cycle.