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esp_hw_support: Fix time jump after reboot

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Closes https://github.com/espressif/esp-idf/issues/9448
This commit is contained in:
KonstantinKondrashov
2022-10-27 21:45:38 +08:00
parent 755ce1077d
commit be904e4ae9
1 changed files with 5 additions and 1 deletions
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6
components/esp_hw_support/esp_clk.c
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@@ -46,7 +46,7 @@ extern uint32_t g_ticks_per_us_app;
#endif
static portMUX_TYPE s_esp_rtc_time_lock = portMUX_INITIALIZER_UNLOCKED;
static RTC_DATA_ATTR uint64_t s_esp_rtc_time_us = 0, s_rtc_last_ticks = 0;
static RTC_NOINIT_ATTR uint64_t s_esp_rtc_time_us, s_rtc_last_ticks;
inline static int IRAM_ATTR s_get_cpu_freq_mhz(void)
{
@@ -89,6 +89,10 @@ uint64_t esp_rtc_get_time_us(void)
{
portENTER_CRITICAL_SAFE(&s_esp_rtc_time_lock);
const uint32_t cal = esp_clk_slowclk_cal_get();
if (cal == 0) {
s_esp_rtc_time_us = 0;
s_rtc_last_ticks = 0;
}
const uint64_t rtc_this_ticks = rtc_time_get();
const uint64_t ticks = rtc_this_ticks - s_rtc_last_ticks;
/* RTC counter result is up to 2^48, calibration factor is up to 2^24,