Power Management: fix the issue of sleeping time error beacause external 32kHz xtal does not exist
@@ -687,8 +687,15 @@ esp_err_t esp_light_sleep_start(void)
// Re-calibrate the RTC Timer clock
#ifdef CONFIG_ESP_SYSTEM_RTC_EXT_XTAL
+ if (rtc_clk_slow_src_get() == SOC_RTC_SLOW_CLK_SRC_XTAL32K) {
uint64_t time_per_us = 1000000ULL;
s_config.rtc_clk_cal_period = (time_per_us << RTC_CLK_CAL_FRACT) / rtc_clk_slow_freq_get_hz();
+ } else {
+ // If the external 32 kHz XTAL does not exist, use the internal 150 kHz RC oscillator
+ // as the RTC slow clock source.
+ s_config.rtc_clk_cal_period = rtc_clk_cal(RTC_CAL_RTC_MUX, RTC_CLK_SRC_CAL_CYCLES);
+ esp_clk_slowclk_cal_set(s_config.rtc_clk_cal_period);
+ }
#elif CONFIG_RTC_CLK_SRC_INT_RC && CONFIG_IDF_TARGET_ESP32S2
s_config.rtc_clk_cal_period = rtc_clk_cal_cycling(RTC_CAL_RTC_MUX, RTC_CLK_SRC_CAL_CYCLES);
esp_clk_slowclk_cal_set(s_config.rtc_clk_cal_period);
