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SourceVuESP-IDF Framework and ExamplesESP-IDFesp_clk_slowclk_cal_set()

esp_clk_slowclk_cal_set() function

Update the calibration value of RTC slow clock The value has to be in the same format as returned by rtc_clk_cal (microseconds, in Q13.19 fixed-point format). This value is used by timekeeping functions (such as gettimeofday) to calculate current time based on RTC counter value.

Syntax

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Summary

Declaration

Definition

from esp_clk.h:39

void esp_clk_slowclk_cal_set(uint32_t value);

Implemented in esp_clk.c:165

Arguments

Argument

Description

value

calibration value obtained using rtc_clk_cal

References

Code

Location

Referrer

void esp_clk_slowclk_cal_set(uint32_t new_cal)

void esp_clk_slowclk_cal_set(uint32_t value);

esp_clk_slowclk_cal_set(cal_val);

select_rtc_slow_clk()

esp_clk_slowclk_cal_set(cal_val);

esp_clk_tree_common.c:72

clk_tree_rtc_slow_calibration()

esp_clk_slowclk_cal_set(s_config.rtc_clk_cal_period);

sleep_modes.c:771

sleep_low_power_clock_calibration()

esp_clk_slowclk_cal_set(s_config.rtc_clk_cal_period);

sleep_modes.c:782

sleep_low_power_clock_calibration()

Call Tree

esp_clk_slowclk_cal_set() is called by 3 functions and calls 2 functions:

sleep_low_power_clock_calibration()

clk_tree_rtc_slow_calibration()

select_rtc_slow_clk()

esp_clk_slowclk_cal_set()

clk_ll_rtc_slow_store_cal()

esp_rtc_get_time_us()

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