return a struct from a function to main.c?

Question

Hello I need RTC_TimeStruct and RTC_DateStruct from this function from hw_rtc.c file because these have time datas like second and minute or day. This function return ticks but i can not convert it to time and data. So, I decided to get this struct to my main file and read time.

 * @brief Get the RTC timer value
 * @param none
 * @retval RTC Timer value in ticks
 */
uint32_t HW_RTC_GetTimerValue( void )
{
  RTC_TimeTypeDef RTC_TimeStruct;
  RTC_DateTypeDef RTC_DateStruct;

  uint32_t CalendarValue = (uint32_t) HW_RTC_GetCalendarValue(&RTC_DateStruct, &RTC_TimeStruct );

  return (CalendarValue);

}

In my main file I tried something like this but unfortunately failed.

void rxDoneEventCallback(uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr)
{
    //BSP_LED_On(LED2);

    TimerStart(&ledTimer);
    RTC_TimeTypeDef *tStruct = {0};
    tStruct = HW_RTC_GetTimerValue();

        if( (payload[0] + (payload[1]<<8)) > 4095 )  
            {

            garbageRxDataCount++ ;          
            }
        else
            {
                vcom_Send("Second: %d Minute: %d Data: %d"  ,tStruct->Seconds, tStruct->Minutes, payload[0] +  (payload[1]<<8));
                PRINTF("\n");
            }
}

Answer 1

All you need to do is call HW_RTC_GetCalendarValue() directly.

HW_RTC_GetTimerValue() is calling HW_RTC_GetCalendarValue() and discards the structured data.

  RTC_TimeTypeDef time ;
  RTC_DateTypeDef date ;

  HW_RTC_GetCalendarValue( &date , &time ) ;

RTC_DateStruct and RTC_TimeStruct will be filled with the date and time data by HW_RTC_GetCalendarValue() .