esp_hw_support: Adds a msg when 32k xtal was stopped
@@ -135,8 +135,14 @@ uint64_t rtc_time_slowclk_to_us(uint64_t rtc_cycles, uint32_t period)
uint64_t rtc_time_get(void)
{
SET_PERI_REG_MASK(RTC_CNTL_TIME_UPDATE_REG, RTC_CNTL_TIME_UPDATE);
+ int attempts = 1000;
while (GET_PERI_REG_MASK(RTC_CNTL_TIME_UPDATE_REG, RTC_CNTL_TIME_VALID) == 0) {
esp_rom_delay_us(1); // might take 1 RTC slowclk period, don't flood RTC bus
+ if (attempts) {
+ if (--attempts == 0 && REG_GET_FIELD(RTC_CNTL_CLK_CONF_REG, RTC_CNTL_DIG_XTAL32K_EN)) {
+ ESP_HW_LOGE(TAG, "rtc_time_get() 32kHz xtal has been stopped");
+ }
+ }
}
SET_PERI_REG_MASK(RTC_CNTL_INT_CLR_REG, RTC_CNTL_TIME_VALID_INT_CLR);
uint64_t t = READ_PERI_REG(RTC_CNTL_TIME0_REG);
@@ -155,8 +161,14 @@ void rtc_clk_wait_for_slow_cycle(void)
REG_SET_FIELD(TIMG_RTCCALICFG_REG(0), TIMG_RTC_CALI_MAX, 0);
REG_SET_BIT(TIMG_RTCCALICFG_REG(0), TIMG_RTC_CALI_START);
esp_rom_delay_us(1); /* RDY needs some time to go low */
+ int attempts = 1000;
while (!GET_PERI_REG_MASK(TIMG_RTCCALICFG_REG(0), TIMG_RTC_CALI_RDY)) {
esp_rom_delay_us(1);
+ if (attempts) {
+ if (--attempts == 0 && REG_GET_FIELD(RTC_CNTL_CLK_CONF_REG, RTC_CNTL_DIG_XTAL32K_EN)) {
+ ESP_HW_LOGE(TAG, "32kHz xtal has been stopped");
+ }
+ }
}
}
