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esp32/rtc: fix xtal unstable in some cases when sleep

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1. add xtal buf wait to fix high temperature restart issue
2. add min sleep value to fix xtal stop due to too short sleep time issue
This commit is contained in:
jingli
2022-10-09 14:53:59 +08:00
parent a2086ca355
commit b6491464e1
10 changed files with 33 additions and 25 deletions
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20
components/esp_system/sleep_modes.c
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@@ -699,7 +699,7 @@ static esp_err_t esp_light_sleep_inner(uint32_t pd_flags,
rtc_vddsdio_config_t vddsdio_config)
{
// Enter sleep
esp_err_t err = esp_sleep_start(pd_flags);
uint32_t reject = esp_sleep_start(pd_flags);
// If VDDSDIO regulator was controlled by RTC registers before sleep,
// restore the configuration.
@@ -712,7 +712,8 @@ static esp_err_t esp_light_sleep_inner(uint32_t pd_flags,
// Wait for the flash chip to start up
esp_rom_delay_us(flash_enable_time_us);
}
return err;
return reject ? ESP_ERR_SLEEP_REJECT : ESP_OK;
}
esp_err_t esp_light_sleep_start(void)
@@ -825,11 +826,18 @@ esp_err_t esp_light_sleep_start(void)
wdt_hal_write_protect_enable(&rtc_wdt_ctx);
}
// Enter sleep, then wait for flash to be ready on wakeup
esp_err_t err = esp_light_sleep_inner(pd_flags,
flash_enable_time_us, vddsdio_config);
esp_err_t err = ESP_OK;
int64_t final_sleep_duration_us = (int64_t)s_config.sleep_duration - (int64_t)s_config.sleep_time_adjustment;
int64_t min_sleep_duration_us = rtc_time_slowclk_to_us(RTC_CNTL_MIN_SLP_VAL_MIN, s_config.rtc_clk_cal_period);
s_light_sleep_wakeup = true;
// if rtc timer wakeup source is enabled, need to compare final sleep duration and min sleep duration to avoid late wakeup
if ((s_config.wakeup_triggers & RTC_TIMER_TRIG_EN) && (final_sleep_duration_us <= min_sleep_duration_us)) {
err = ESP_ERR_SLEEP_TOO_SHORT_SLEEP_DURATION;
} else {
// Enter sleep, then wait for flash to be ready on wakeup
err = esp_light_sleep_inner(pd_flags, flash_enable_time_us, vddsdio_config);
s_light_sleep_wakeup = true;
}
// FRC1 has been clock gated for the duration of the sleep, correct for that.
#ifdef CONFIG_IDF_TARGET_ESP32C3