写了个看门狗程序，可是却不工作，不知何原因，大家指点一二。
/*******************************************************************************
* Function Name : IWDG_Configuration
* Description : Configures IWDG.
* Input : None
* Output : None
* Return : None
* 备注 : 看门狗时长约为800ms
*******************************************************************************/
void IWDG_Configuration(uint16 dogtime)
{
/* IWDG timeout equal to 819 ms (the timeout may varies due to LSI frequency
dispersion) -------------------------------------------------------------*/
/* Enable write access to IWDG_PR and IWDG_RLR registers */
IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);
/* IWDG counter clock: 40KHz(LSI) / 8 = 5 KHz */
IWDG_SetPrescaler(IWDG_Prescaler_8);
/* Set counter reload value to 0xfff */
IWDG_SetReload(dogtime);
/* Reload IWDG counter */
IWDG_ReloadCounter();
/* Enable IWDG (the LSI oscillator will be enabled by hardware) */
IWDG_Enable();
} |
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