Use time_t instead of uint32_t to avoid year 2038 problem.

Author: paulbearddotname

src/STM32RTC.cpp

@@ -813,7 +813,7 @@ void STM32RTC::setAlarmDate(uint8_t day, uint8_t month, uint8_t year)
   * @param  subSeconds: optional pointer to where to store subseconds of the epoch in ms
   * @retval epoch time in seconds
   */
-uint32_t STM32RTC::getEpoch(uint32_t *subSeconds)
+time_t STM32RTC::getEpoch(uint32_t *subSeconds)
 {
   struct tm tm;
 
@@ -844,7 +844,7 @@ uint32_t STM32RTC::getEpoch(uint32_t *subSeconds)
   * @brief  get epoch time since 1st January 2000, 00:00:00
   * @retval epoch time in seconds
   */
-uint32_t STM32RTC::getY2kEpoch(void)
+time_t STM32RTC::getY2kEpoch(void)
 {
   return (getEpoch() - EPOCH_TIME_OFF);
 }
@@ -855,7 +855,7 @@ uint32_t STM32RTC::getY2kEpoch(void)
   * @param  Alarm_Match match enum
   * @param  subSeconds subSeconds in ms
   */
-void STM32RTC::setAlarmEpoch(uint32_t ts, Alarm_Match match, uint32_t subSeconds)
+void STM32RTC::setAlarmEpoch(time_t ts, Alarm_Match match, uint32_t subSeconds)
 {
   if (ts < EPOCH_TIME_OFF) {
     ts = EPOCH_TIME_OFF;
@@ -877,7 +877,7 @@ void STM32RTC::setAlarmEpoch(uint32_t ts, Alarm_Match match, uint32_t subSeconds
   * @param  epoch time in seconds
   * @param  subSeconds subSeconds in ms
   */
-void STM32RTC::setEpoch(uint32_t ts, uint32_t subSeconds)
+void STM32RTC::setEpoch(time_t ts, uint32_t subSeconds)
 {
   if (ts < EPOCH_TIME_OFF) {
     ts = EPOCH_TIME_OFF;
@@ -908,7 +908,7 @@ void STM32RTC::setEpoch(uint32_t ts, uint32_t subSeconds)
   * @brief  set RTC time from epoch time since 1st January 2000, 00:00:00
   * @param  epoch time in seconds
   */
-void STM32RTC::setY2kEpoch(uint32_t ts)
+void STM32RTC::setY2kEpoch(time_t ts)
 {
   setEpoch(ts + EPOCH_TIME_OFF);
 }

src/STM32RTC.h

@@ -189,11 +189,11 @@ class STM32RTC {
 
     /* Epoch Functions */
 
-    uint32_t getEpoch(uint32_t *subSeconds = nullptr);
-    uint32_t getY2kEpoch(void);
-    void setEpoch(uint32_t ts, uint32_t subSeconds = 0);
-    void setY2kEpoch(uint32_t ts);
-    void setAlarmEpoch(uint32_t ts, Alarm_Match match = MATCH_DHHMMSS, uint32_t subSeconds = 0);
+    time_t getEpoch(uint32_t *subSeconds = nullptr);
+    time_t getY2kEpoch(void);
+    void setEpoch(time_t ts, uint32_t subSeconds = 0);
+    void setY2kEpoch(time_t ts);
+    void setAlarmEpoch(time_t ts, Alarm_Match match = MATCH_DHHMMSS, uint32_t subSeconds = 0);
 
 #if defined(STM32F1xx)
     void getPrediv(uint32_t *predivA, int16_t *dummy = nullptr);