cwespressif commented on a change in pull request #3794:
URL: https://github.com/apache/incubator-nuttx/pull/3794#discussion_r647922914
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File path: arch/risc-v/src/esp32c3/esp32c3_rtc.c
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@@ -2135,3 +2246,415 @@ void IRAM_ATTR
esp32c3_rtc_sleep_set_wakeup_time(uint64_t t)
modifyreg32(RTC_CNTL_INT_CLR_REG, 0, RTC_CNTL_MAIN_TIMER_INT_CLR_M);
modifyreg32(RTC_CNTL_SLP_TIMER1_REG, 0, RTC_CNTL_MAIN_TIMER_ALARM_EN_M);
}
+
+/****************************************************************************
+ * Name: esp32c3_rtc_set_boot_time
+ *
+ * Description:
+ * Set time to RTC register to replace the original boot time.
+ *
+ * Input Parameters:
+ * time_us - set time in microseconds.
+ *
+ * Returned Value:
+ * None
+ *
+ ****************************************************************************/
+
+void IRAM_ATTR esp32c3_rtc_set_boot_time(uint64_t time_us)
+{
+ putreg32((uint32_t)(time_us & 0xffffffff), RTC_BOOT_TIME_LOW_REG);
+ putreg32((uint32_t)(time_us >> 32), RTC_BOOT_TIME_HIGH_REG);
+}
+
+/****************************************************************************
+ * Name: esp32c3_rtc_get_boot_time
+ *
+ * Description:
+ * Get time of RTC register to indicate the original boot time.
+ *
+ * Input Parameters:
+ * None
+ *
+ * Returned Value:
+ * time_us - get time in microseconds.
+ *
+ ****************************************************************************/
+
+uint64_t IRAM_ATTR esp32c3_rtc_get_boot_time(void)
+{
+ return ((uint64_t)getreg32(RTC_BOOT_TIME_LOW_REG))
+ + (((uint64_t)getreg32(RTC_BOOT_TIME_HIGH_REG)) << 32);
+}
+
+#ifdef CONFIG_RTC_DRIVER
+
+/****************************************************************************
+ * Name: up_rtc_time
+ *
+ * Description:
+ * Get the current time in seconds. This is similar to the standard time()
+ * function. This interface is only required if the low-resolution
+ * RTC/counter hardware implementation selected. It is only used by the
+ * RTOS during initialization to set up the system time when CONFIG_RTC is
+ * set but neither CONFIG_RTC_HIRES nor CONFIG_RTC_DATETIME are set.
+ *
+ * Input Parameters:
+ * None
+ *
+ * Returned Value:
+ * The current time in seconds
+ *
+ ****************************************************************************/
+
+#ifndef CONFIG_RTC_HIRES
Review comment:
Done
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