RTC issue using STM32F4 and Keil uvision 4

Hi I'm struggling to get an RTC time to increment it just stays at the initial values, any help appreciated, I've reduced my code to below. Its now basically a while loop that calls a function to display the current date and time, the RTC is set up just before the while loop. I display the time to an LCD and the seconds don't increment and in debug they don't either.

int main(void)
{ volatile uint32_t dlycnt; int ch;

ADC3_CH12_DMA_Config(); ADC_SoftwareStartConv(ADC3); STM32f4_Discovery_LCD_Init();

/* wait the power stable */ for (dlycnt = 0; dlycnt < 10000000; dlycnt++);

RTC_config();

while (1) { RTC_TimeStampShow(); }
}

void RTC_config(void)
{ /* Enable the PWR clock */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); /* Allow access to RTC */ PWR_BackupAccessCmd(ENABLE); /* Select the RTC Clock Source */ RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE); RCC_RTCCLKCmd(ENABLE); RTC_StructInit(&RTC_InitStruct);

RTC_TimeStruct.RTC_Hours = 16; RTC_TimeStruct.RTC_Minutes = 30; RTC_TimeStruct.RTC_Seconds = 5; RTC_SetTime(RTC_Format_BCD,&RTC_TimeStruct);

RTC_DateStruct.RTC_WeekDay = RTC_Weekday_Thursday; RTC_DateStruct.RTC_Date = 14; RTC_DateStruct.RTC_Month = RTC_Month_March; RTC_DateStruct.RTC_Year = 13; RTC_SetDate(RTC_Format_BCD,&RTC_DateStruct);
}

void RTC_TimeStampShow(void)

{ /*RTC_GetTime(RTC_Format_BCD, &RTC_TimeStruct);*/ if I uncomment this line the time is all zeros?? sprintf((char*)time_display,"Time = %0.2d:%0.2d:%0.2d", RTC_TimeStruct.RTC_Hours, RTC_TimeStruct.RTC_Minutes,RTC_TimeStruct.RTC_Seconds); LCD_DisplayStringLine(LINE(8),0,(unsigned char*)time_display);

/*RTC_GetDate(RTC_Format_BCD, &RTC_DateStruct);*/ if I uncomment the date is always 01/01/00 sprintf((char*)date_display,"Date = %0.2d/%0.2d/%0.2d", RTC_DateStruct.RTC_Date, RTC_DateStruct.RTC_Month,RTC_DateStruct.RTC_Year); LCD_DisplayStringLine(LINE(9),0,(unsigned char*)date_display);