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Independent Watchdog Timer

Question asked by arslan.bahadir on Dec 8, 2013
Latest reply on Dec 8, 2013 by Clive One
hello I want to learn how to use independent watchdog so I wrote this code but it doesnt work .
here is my code :
#include "stm32f10x.h"
#include "stm32_eval.h"
#include <stdio.h>




GPIO_InitTypeDef GPIO_Config_Anahtari;




void Rcc_Configuration(void);
void IWDG_Configuration(void);
void GPIO_Rcc_Configuration(void);
void GPIO_Configuration(void);
void _Delay(uint16_t);


int main(void)
{
     GPIO_Rcc_Configuration();
     GPIO_Configuration();
     Rcc_Configuration();
     IWDG_Configuration();
     IWDG_Enable();
     GPIO_SetBits(GPIOD,GPIO_Pin_7);     
     while(1);
}






#ifdef  USE_FULL_ASSERT


/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t* file, uint32_t line)

  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */


  /* Infinite loop */
  while (1)
  {
  }
}
#endif


void Rcc_Configuration()
{
     RCC_LSICmd(ENABLE);
     while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY)==RESET);     
}


void IWDG_Configuration()
{
     IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);     
     IWDG_SetPrescaler(IWDG_Prescaler_16);     
     IWDG_SetReload(0xFFF);
     IWDG_ReloadCounter();
     IWDG_WriteAccessCmd(IWDG_WriteAccess_Disable);
}


void GPIO_Rcc_Configuration()
{     
     RCC_HCLKConfig(RCC_SYSCLK_Div1);
     RCC_PCLK2Config(RCC_HCLK_Div1);
     RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD,ENABLE);
}
void _Delay(uint16_t t)
{
     uint8_t i=0;
    while(t--)
        for(i=0;i<10;i++);
}
void GPIO_Configuration()
{
     GPIO_Config_Anahtari.GPIO_Mode = GPIO_Mode_Out_PP;
     GPIO_Config_Anahtari.GPIO_Pin = GPIO_Pin_7;
     GPIO_Config_Anahtari.GPIO_Speed = GPIO_Speed_50MHz;
     GPIO_Init(GPIOD,&GPIO_Config_Anahtari);
}

So in this code I expect , iwdg creates an reset signal. So when reset signal created , led must be turn off and then turn on again. But in my board nothing change. So what is the problem ? 

Thanks for your help and sorry about my english

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