示例#1
0
/*********************************************************************************************************//**
  * @brief  Period_Reload program,the example main funtion.
  * @retval None
  ***********************************************************************************************************/
void Period_Reload(void)
{

  NVIC_Configuration();               /* NVIC configuration                                                 */
  CKCU_Configuration();               /* System Related configuration                                       */
  USART_Configuration();              /* USART Related configuration                                        */
  SYSTICK_Configuration();            /* SYSTICK Related configuration                                      */
  LED_Configuration();

  /* WatchDog configuration */
  WDT_IntConfig(ENABLE);              /* Enable WDT Interrupt */
  WDT_SetPrescaler(WDT_PRESCALER_8);  /* Set Prescaler Value as 2 */
  WDT_SetReloadValue(0xEFF);          /* Set Reload Value as 0xEFF  */
  WDT_Restart();                      /* Reload Counter as WDTV Value */
  WDT_SetDeltaValue(0xA00);           /* Set Delta Value as 0xA00 */
  WDT_ProtectCmd(ENABLE);             /* Enable Protection  */

  //printf("\n\rWDT Period Reload Starts...\n\r");
  //printf("The Program Is Still Working If LED3 Keep Flashing\n\r");

  /* Enable the SYSTICK Counter */
  SYSTICK_CounterCmd(SYSTICK_COUNTER_ENABLE);

  while(1);
}
示例#2
0
/*******************************************************************************
* Function Name  : Set_System
* Description    : Configures Main system clocks & power.
* Input          : None.
* Return         : None.
*******************************************************************************/
void Set_System(void)
{
  /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration -----------------------------*/   
     
  /* RCC system reset(for debug purpose) */
  RCC_DeInit();

  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);

  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();

  if(HSEStartUpStatus == SUCCESS)
  {
    /* Enable Prefetch Buffer */
    FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

    /* Flash 2 wait state */
    FLASH_SetLatency(FLASH_Latency_2);
 
    /* HCLK = SYSCLK */
    RCC_HCLKConfig(RCC_SYSCLK_Div1); 
  
    /* PCLK2 = HCLK */
    RCC_PCLK2Config(RCC_HCLK_Div1); 

    /* PCLK1 = HCLK/2 */
    RCC_PCLK1Config(RCC_HCLK_Div2);

    /* On STICE the PLL output clock is fixed to 72 MHz */
    RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

    /* Enable PLL */ 
    RCC_PLLCmd(ENABLE);

    /* Wait till PLL is ready */
    while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
    {
    }

    /* Select PLL as system clock source */
    RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

    /* Wait till PLL is used as system clock source */
    while(RCC_GetSYSCLKSource() != 0x08)
    {
    }
  }

   /* Enable USART1, GPIOA, GPIOD and AFIO clocks RCC_APB2Periph_USART1 |*/
  RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA
                         | RCC_APB2Periph_AFIO | RCC_APB2Periph_USART1, ENABLE);

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
						   
  /* Configure the used GPIOs*/
  GPIO_Configuration();
  
  /* Configure the EXTI lines for Key and Tamper push buttons*/
  EXTI_Configuration();
  
  UART_Configuration();
  SYSTICK_Configuration();
}