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esp_hw_support: Fix time jump after reboot
Closes https://github.com/espressif/esp-idf/issues/9448
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@ -53,7 +53,7 @@ extern uint32_t g_ticks_per_us_app;
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static portMUX_TYPE s_esp_rtc_time_lock = portMUX_INITIALIZER_UNLOCKED;
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// TODO: IDF-4239
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static RTC_DATA_ATTR uint64_t s_esp_rtc_time_us = 0, s_rtc_last_ticks = 0;
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static RTC_NOINIT_ATTR uint64_t s_esp_rtc_time_us, s_rtc_last_ticks;
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inline static int IRAM_ATTR s_get_cpu_freq_mhz(void)
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{
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@ -100,6 +100,10 @@ uint64_t esp_rtc_get_time_us(void)
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#endif
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portENTER_CRITICAL_SAFE(&s_esp_rtc_time_lock);
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const uint32_t cal = esp_clk_slowclk_cal_get();
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if (cal == 0) {
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s_esp_rtc_time_us = 0;
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s_rtc_last_ticks = 0;
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}
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const uint64_t rtc_this_ticks = rtc_time_get();
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const uint64_t ticks = rtc_this_ticks - s_rtc_last_ticks;
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/* RTC counter result is up to 2^48, calibration factor is up to 2^24,
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