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Many things, including a log timing report in the test

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Timing report:

I (52322) LOG_TEST: === WRITE TIMING REPORT ===
I (52322) LOG_TEST:   Iterations:       200
I (52322) LOG_TEST:   Payload size:     39 bytes
I (52322) LOG_TEST:   Min:              49960 us
I (52332) LOG_TEST:   Max:              54476 us
I (52332) LOG_TEST:   Avg:              50005 us
I (52342) LOG_TEST:   Sector crossings: 2 (max 49983 us)
I (52342) LOG_TEST:   WDT margin:       4.9s (WDT=5s, worst=54476us)
I (52352) LOG_TEST: ===========================

so a write takes up to 54ms - not negligible!
This commit is contained in:
Thaddeus Hughes
2026-03-12 19:58:39 -05:00
parent 59e7071023
commit ff1ea6615c
13 changed files with 279 additions and 154 deletions
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18
main/rtc.c
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@@ -44,7 +44,9 @@ static uint64_t rtc_hw_time_us(void)
uint64_t last_activity_tick = 0;
// RTC_DATA_ATTR keeps these in RTC memory; persists across software resets (panics, WDT)
// RTC_DATA_ATTR keeps these in RTC memory; persists across software resets (panics, WDT).
// AUDIT: no init path zeroes these — rtc_restore_time() recovers via RTC HW counter,
// rtc_set_s() is only called explicitly by the user. Verified 2026-03-12.
RTC_DATA_ATTR int64_t next_alarm_time_s = -1;
RTC_DATA_ATTR bool rtc_set = false;
RTC_DATA_ATTR int64_t sync_unix_us = 0; // Unix time in µs at last rtc_set_s() call
@@ -160,22 +162,14 @@ int64_t rtc_get_s_in_day(void)
return rtc_get_s() % 86400UL;
}
esp_sleep_wakeup_cause_t rtc_wakeup_cause(void)
{
esp_sleep_wakeup_cause_t c = esp_sleep_get_wakeup_cause();
switch (c) {
case ESP_SLEEP_WAKEUP_EXT0: ESP_LOGI("RTC", "Wakeup: GPIO"); break;
case ESP_SLEEP_WAKEUP_TIMER: ESP_LOGI("RTC", "Wakeup: timer"); break;
default: ESP_LOGI("RTC", "Wakeup: normal boot"); break;
}
return c;
}
/* -------------------------------------------------------------------------- */
/* Unified periodic update */
/* -------------------------------------------------------------------------- */
void rtc_check_shutdown_timer(void)
{
// Unsigned subtraction handles TickType_t (uint32_t) wraparound correctly:
// e.g. if tick wrapped from 0xFFFFFFFE to 5, elapsed = 5 - 0xFFFFFFFE = 7.
// At 1ms/tick, uint32_t wraps after ~49.7 days — well beyond the 180s timeout.
TickType_t elapsed = xTaskGetTickCount() - last_activity_tick;
if (elapsed * portTICK_PERIOD_MS >= POWER_INACTIVITY_TIMEOUT_MS)
soft_idle_enter();