From 0549ebe68dbc6a35a8b1b30e806702752c169050 Mon Sep 17 00:00:00 2001
From: Anatole SCHRAMM <anatole.schramm@st.com>
Date: Thu, 31 Jul 2025 16:15:31 +0200
Subject: [PATCH] Added a function to the app_utils collection which parses a
 time and date string to fill a struct tm

---
 app/app_lib/app_utils.c | 36 +++++++++++++++++++++++++++++++++++-
 app/app_lib/app_utils.h |  9 +++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/app/app_lib/app_utils.c b/app/app_lib/app_utils.c
index 308a531..e91eb2e 100644
--- a/app/app_lib/app_utils.c
+++ b/app/app_lib/app_utils.c
@@ -1,5 +1,6 @@
 #include "app_utils.h"
 #include <math.h>
+#include "utils.h"
 #include "wm_crypto_hard.h"
 
 static uint32_t millis_cnt = 0;
@@ -73,4 +74,37 @@ uint32_t random_gen_6_digit(void)
 	}
 
 	return output_num;
-}
\ No newline at end of file
+}
+
+void time_date_to_tm(const char *time_date, struct tm *time)
+{
+  if(!time_date) return;
+
+  /* Months are on three letters :
+     Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
+  */
+  const char *MONTHS[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+  const unsigned long int MONTHS_CNT = sizeof(MONTHS)/sizeof(*MONTHS);
+  char month[4];
+  time->tm_mon = 0;
+
+  sscanf(time_date, "%d:%d:%d %s %d %d",
+  &time->tm_hour,
+  &time->tm_min,
+  &time->tm_sec,
+  month,
+  &time->tm_mday,
+  &time->tm_year);
+
+  for(unsigned long int i = 0; i < MONTHS_CNT; i++)
+  {
+    if(strcasecmp(MONTHS[i], month) == 0)
+    {
+      time->tm_mon = i;
+      break;
+    }
+  }
+
+  // Adjust year value
+  time->tm_year -= 1900;
+}
diff --git a/app/app_lib/app_utils.h b/app/app_lib/app_utils.h
index f339a3c..2829936 100644
--- a/app/app_lib/app_utils.h
+++ b/app/app_lib/app_utils.h
@@ -13,4 +13,13 @@ void ms_delay(uint32_t ms);
 
 uint32_t random_gen_6_digit(void);
 
+/**
+ * @brief Function parsing a string having format : __TIME__" "__DATE__
+ *        and filling the given struct tm accordingly.
+ * 
+ * @param time_date a string having the proper time and date format
+ * @param time      a pointer to the struct tm to fill
+ */
+void time_date_to_tm(const char *time_date, struct tm *time);
+
 #endif //APP_UTILS_H
\ No newline at end of file