commit ccde09b7e4fc94958f22de49b45efee6c25e0837
author Ali Labbene <ali.labbene@st.com> Mon May 23 15:35:57 2022 +0100
committer Ali Labbene <ali.labbene@st.com> Mon May 23 15:35:57 2022 +0100
tree 8af2f4bddd218011aa25c6aa4abb57c6c7663353
parent 8d5c18d7ba3b6065dc103338b2ed176b6c74e0ad

[LL][RTC] Avoid waiting for the RSF bit to be cleared in the LL_RTC_WaitForSynchro() API to prevent getting stuck in an infinite loop

Src/stm32l4xx_ll_rtc.c

diff --git a/Src/stm32l4xx_ll_rtc.c b/Src/stm32l4xx_ll_rtc.c
index 956e1a5..179e76f 100644
--- a/Src/stm32l4xx_ll_rtc.c
+++ b/Src/stm32l4xx_ll_rtc.c
@@ -808,7 +808,7 @@
 
   /* Wait the registers to be synchronised */
   tmp = LL_RTC_IsActiveFlag_RS(RTCx);
-  while ((timeout != 0U) && (tmp != 0U))
+  while ((timeout != 0U) && (tmp != 1U))
   {
     if (LL_SYSTICK_IsActiveCounterFlag() == 1U)
     {
@@ -821,24 +821,6 @@
     }
   }
 
-  if (status != ERROR)
-  {
-    timeout = RTC_SYNCHRO_TIMEOUT;
-    tmp = LL_RTC_IsActiveFlag_RS(RTCx);
-    while ((timeout != 0U) && (tmp != 1U))
-    {
-      if (LL_SYSTICK_IsActiveCounterFlag() == 1U)
-      {
-        timeout--;
-      }
-      tmp = LL_RTC_IsActiveFlag_RS(RTCx);
-      if (timeout == 0U)
-      {
-        status = ERROR;
-      }
-    }
-  }
-
   return (status);
 }