STM32 RTC : skip rtc_write if possible

2018-11-16 14:32:32 +01:00 · 2018-11-16 14:32:32 +01:00 · 9da5e48941
parent 5047ea4f42
commit 9da5e48941
1 changed files with 5 additions and 0 deletions
--- a/targets/TARGET_STM/rtc_api.c
+++ b/targets/TARGET_STM/rtc_api.c
@ -207,6 +207,11 @@ void rtc_write(time_t t)
    RTC_DateTypeDef dateStruct = {0};
    RTC_TimeTypeDef timeStruct = {0};

+    /* if the requested time is the current time, no need to continue */
+    if (t == rtc_read()) {
+        return;
+    }
+
    core_util_critical_section_enter();
    RtcHandle.Instance = RTC;