saramonteiro commented on a change in pull request #3794:
URL: https://github.com/apache/incubator-nuttx/pull/3794#discussion_r642420514
##########
File path: arch/risc-v/src/esp32c3/esp32c3_rtc.c
##########
@@ -1263,6 +1330,50 @@ static void IRAM_ATTR
esp32c3_rtc_clk_cpu_freq_to_pll_mhz(
ets_update_cpu_frequency(cpu_freq_mhz);
}
+#ifdef CONFIG_RTC_DRIVER
+
+/****************************************************************************
+ * Name: esp32c3_rt_cb_handler
+ *
+ * Description:
+ * RT-Timer service routine
+ *
+ * Input Parameters:
+ * arg - Information about the RT-Timer configuration.
+ *
+ * Returned Value:
+ * None
+ *
+ ****************************************************************************/
+
+static void IRAM_ATTR esp32c3_rt_cb_handler(FAR void *arg)
+{
+ FAR struct alm_cbinfo_s *cbinfo = (struct alm_cbinfo_s *)arg;
+ alm_callback_t cb;
+ FAR void *cb_arg;
+ int alminfo_id;
+
+ DEBUGASSERT(cbinfo != NULL);
+ alminfo_id = cbinfo->index;
+ DEBUGASSERT((RTC_ALARM0 <= alminfo_id) &&
+ (alminfo_id < RTC_ALARM_LAST));
+
+ if (cbinfo->ac_cb != NULL)
+ {
+ /* Alarm callback */
+
+ cb = cbinfo->ac_cb;
+ cb_arg = (FAR void *)cbinfo->ac_arg;
+
Review comment:
```suggestion
```
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