Posted on May 17, 2011 at 09:36Hi all,
Have any bode worked on RTC interrupts? I've a problem with the periodic interrupt. It is getting executed only once. When crosschecking in the debug mode, i noticed that even when the flag PISF is set, ISR is not getting executed from the second time onwards. I've even tried reinitializing the interrupt but it also is not working. My code with reinitializing the interrupt is:
#include
GPIO_InitTypeDef GPIO_InitStructure;
void SCU_Configuration(void);
void GPIO_Configuration(void);
void VIC_Configuration(void);
void RTC_Configuration(void);
extern u8 k;
void main()
{
u8 i=0x0f;
#ifdef DEBUG
debug();
#endif
SCU_Configuration();
GPIO_Configuration();
RTC_Configuration();
VIC_Configuration();
k=0;
while(1)
{
if (k==1)
{
k=0;
i=~i;
RTC_ITConfig(RTC_IT_Per, DISABLE);
RTC_ITConfig(RTC_IT_Per, ENABLE);
RTC_PeriodicIntConfig(RTC_Per_2Hz);
RTC_ClearFlag(RTC_FLAG_Per);
}
GPIO_Write (GPIO7,i);
}
}
/********************************Subroutines******************************/
void VIC_Configuration(void)
{
VIC_DeInit();
VIC_Config(RTC_ITLine, VIC_IRQ, 0);
VIC_ITCmd(RTC_ITLine, ENABLE);
}
void SCU_Configuration(void)
{
SCU_APBPeriphClockConfig(__GPIO7, ENABLE);
SCU_AHBPeriphClockConfig(__VIC,ENABLE);
SCU_APBPeriphClockConfig(__RTC, ENABLE);
SCU_APBPeriphReset(__RTC,DISABLE); /*RTC out of RESET state*/
}
void RTC_Configuration()
{
RTC_TIME time;
RTC_DATE date;
RTC_DeInit();
/************** RTC Time setting*******************/
date.day = 7 ; /* set day */
date.weekday = 1; /* set weekday */
date.month = 1; /* set month */
date.year = 7; /* set year */
date.century = 20; /* set century */
time.hours = 11; /* set hours */
time.minutes = 32; /* set minutes */
time.seconds = 30; /* set seconds */
time.milliseconds = 0; /* set milliseconds */
/*set time & date*/
RTC_SetDate(date); /* set date in RTC */
RTC_SetTime(time); /* set time in RTC registers */
/***************** RTC Periodic Interrupt Settings***************/
RTC_ITConfig(RTC_IT_Per, ENABLE);
RTC_ClearFlag(RTC_FLAG_Per);
RTC_PeriodicIntConfig(RTC_Per_2Hz);
}
void GPIO_Configuration(void)
{
GPIO_DeInit(GPIO7); /*Gonfigure LEDS*/
GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable;
GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt1 ;
GPIO_Init (GPIO7, &GPIO_InitStructure);
}
The ISR is:
u8 k;
void RTC_IRQHandler(void)
{
k=1;
}
Please give me a solution for this as quickly as possible. it is very urgently required.
Regards,
Neelima.
