From 7d849b41e7de907a8d458f7e7282733fe32d6110 Mon Sep 17 00:00:00 2001
From: Rahix <rahix@rahix.de>
Date: Sat, 17 Aug 2019 08:53:24 +0200
Subject: [PATCH] fix(rtc): Trigger immediately if alarm is scheduled in the
past
Signed-off-by: Rahix <rahix@rahix.de>
---
epicardium/modules/rtc.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/epicardium/modules/rtc.c b/epicardium/modules/rtc.c
index a72ffe8f..8aa2e3f6 100644
--- a/epicardium/modules/rtc.c
+++ b/epicardium/modules/rtc.c
@@ -58,6 +58,15 @@ int epic_rtc_schedule_alarm(uint32_t timestamp)
{
int res;
+ /*
+ * Check if the timestamp lies in the past and if so, trigger
+ * immediately.
+ */
+ if (epic_rtc_get_seconds() >= timestamp) {
+ api_interrupt_trigger(EPIC_INT_RTC_ALARM);
+ return 0;
+ }
+
NVIC_EnableIRQ(RTC_IRQn);
while ((res = RTC_SetTimeofdayAlarm(MXC_RTC, timestamp)) == E_BUSY)
--
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