1 files changed, 13 insertions, 0 deletions

diff --git a/firmware/drivers/rtc/rtc_mc13783.c b/firmware/drivers/rtc/rtc_mc13783.c
index a1f78f738d..aedf5f6fa5 100644
--- a/firmware/drivers/rtc/rtc_mc13783.c
+++ b/firmware/drivers/rtc/rtc_mc13783.c
@@ -69,6 +69,7 @@ static const unsigned char rtc_registers[RTC_NUM_REGS_RD] =
 
 /* was it an alarm that triggered power on ? */
 static bool alarm_start = false;
+static unsigned long rtc_is_dirty = 1; /* force a read right away */
 
 static const unsigned short month_table[13] =
 {
@@ -96,6 +97,16 @@ static bool read_time_and_day(uint32_t regs[RTC_NUM_REGS_RD])
     return true;
 }
 
+void MC13783_EVENT_CB_1HZ(void)
+{
+    rtc_is_dirty = 1;
+}
+
+bool rtc_mc13783_dirty(void)
+{
+    return bitclr32(&rtc_is_dirty, 1);
+}
+
 /** Public APIs **/
 void rtc_init(void)
 {
@@ -105,6 +116,8 @@ void rtc_init(void)
         alarm_start = true;
         mc13783_write(MC13783_INTERRUPT_STATUS1, MC13783_TODAI);
     }
+
+    mc13783_enable_event(MC13783_INT_ID_1HZ, true);
 }
 
 int rtc_read_datetime(struct tm *tm)