--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/IWDG/IWDG_Reset/main.c	Mon Oct 03 21:19:15 2011 +1030
@@ -0,0 +1,244 @@
+/**
+  ******************************************************************************
+  * @file    IWDG/IWDG_Reset/main.c 
+  * @author  MCD Application Team
+  * @version V3.5.0
+  * @date    08-April-2011
+  * @brief   Main program body.
+  ******************************************************************************
+  * @attention
+  *
+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+  *
+  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x.h"
+#include "stm32_eval.h"
+
+/** @addtogroup STM32F10x_StdPeriph_Examples
+  * @{
+  */
+
+/** @addtogroup IWDG_Reset
+  * @{
+  */ 
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Uncomment/Comment depending on your STM32 device. 
+   The LSI is internally connected to TIM5 IC4 only on STM32F10x Connectivity 
+   line, High-Density Value line, High-Density and XL-Density Devices */
+#define LSI_TIM_MEASURE
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+__IO uint32_t TimingDelay = 0;
+__IO uint32_t LsiFreq = 40000;
+extern __IO uint16_t CaptureNumber;
+
+/* Private function prototypes -----------------------------------------------*/
+void Delay(__IO uint32_t nTime);
+void TIM5_ConfigForLSI(void);
+
+/* Private functions ---------------------------------------------------------*/
+
+/**
+  * @brief  Main program.
+  * @param  None
+  * @retval None
+  */
+int main(void)
+{
+  /*!< At this stage the microcontroller clock setting is already configured, 
+       this is done through SystemInit() function which is called from startup
+       file (startup_stm32f10x_xx.s) before to branch to application main.
+       To reconfigure the default setting of SystemInit() function, refer to
+       system_stm32f10x.c file
+     */     
+       
+  /* Initialize LED1 and Key Button mounted on STM3210X-EVAL board */       
+  STM_EVAL_LEDInit(LED1);
+  STM_EVAL_LEDInit(LED2);
+  STM_EVAL_PBInit(BUTTON_KEY, BUTTON_MODE_EXTI);
+
+  /* Setup SysTick Timer for 1 msec interrupts  */
+  if (SysTick_Config(SystemCoreClock / 1000))
+  { 
+    /* Capture error */ 
+    while (1);
+  }
+
+
+  /* Check if the system has resumed from IWDG reset */
+  if (RCC_GetFlagStatus(RCC_FLAG_IWDGRST) != RESET)
+  {
+    /* IWDGRST flag set */
+    /* Turn on LED1 */
+    STM_EVAL_LEDOn(LED1);
+
+    /* Clear reset flags */
+    RCC_ClearFlag();
+  }
+  else
+  {
+    /* IWDGRST flag is not set */
+    /* Turn off LED1 */
+    STM_EVAL_LEDOff(LED1);
+  }
+
+#ifdef LSI_TIM_MEASURE
+  /* Enable the LSI OSC */
+  RCC_LSICmd(ENABLE);
+  
+  /* Wait till LSI is ready */
+  while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
+  {}
+  
+  /* TIM Configuration -------------------------------------------------------*/
+  TIM5_ConfigForLSI();
+  
+  /* Wait until the TIM5 get 2 LSI edges */
+  while(CaptureNumber != 2)
+  {
+  }
+
+  /* Disable TIM5 CC4 Interrupt Request */
+  TIM_ITConfig(TIM5, TIM_IT_CC4, DISABLE);
+#endif
+  
+  /* IWDG timeout equal to 250 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: LSI/32 */
+  IWDG_SetPrescaler(IWDG_Prescaler_32);
+
+  /* Set counter reload value to obtain 250ms IWDG TimeOut.
+     Counter Reload Value = 250ms/IWDG counter clock period
+                          = 250ms / (LSI/32)
+                          = 0.25s / (LsiFreq/32)
+                          = LsiFreq/(32 * 4)
+                          = LsiFreq/128
+   */
+  IWDG_SetReload(LsiFreq/128);
+
+  /* Reload IWDG counter */
+  IWDG_ReloadCounter();
+
+  /* Enable IWDG (the LSI oscillator will be enabled by hardware) */
+  IWDG_Enable();
+
+  while (1)
+  {
+    /* Toggle LED2 */
+    STM_EVAL_LEDToggle(LED2);
+
+    /* Insert 240 ms delay */
+    Delay(240);
+
+    /* Reload IWDG counter */
+    IWDG_ReloadCounter();  
+  }
+}
+
+/**
+  * @brief  Inserts a delay time.
+  * @param  nTime: specifies the delay time length, in milliseconds.
+  * @retval None
+  */
+void Delay(__IO uint32_t nTime)
+{ 
+  TimingDelay = nTime;
+
+  while(TimingDelay != 0);
+}
+
+#ifdef LSI_TIM_MEASURE
+/**
+  * @brief  Configures TIM5 to measure the LSI oscillator frequency.
+  * @param  None
+  * @retval None
+  */
+void TIM5_ConfigForLSI(void)
+{
+  NVIC_InitTypeDef NVIC_InitStructure;
+  TIM_ICInitTypeDef  TIM_ICInitStructure;
+
+  /* Enable TIM5 clocks */
+  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);
+  
+  /* Enable the TIM5 Interrupt */
+  NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn;
+  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
+  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+  NVIC_Init(&NVIC_InitStructure);
+
+  /* Configure TIM5 prescaler */
+  TIM_PrescalerConfig(TIM5, 0, TIM_PSCReloadMode_Immediate);
+
+  /* Connect internally the TM5_CH4 Input Capture to the LSI clock output */
+  GPIO_PinRemapConfig(GPIO_Remap_TIM5CH4_LSI, ENABLE);
+  
+  /* TIM5 configuration: Input Capture mode ---------------------
+     The LSI oscillator is connected to TIM5 CH4
+     The Rising edge is used as active edge,
+     The TIM5 CCR4 is used to compute the frequency value 
+  ------------------------------------------------------------ */
+  TIM_ICInitStructure.TIM_Channel = TIM_Channel_4;
+  TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
+  TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
+  TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV8;
+  TIM_ICInitStructure.TIM_ICFilter = 0;
+  TIM_ICInit(TIM5, &TIM_ICInitStructure);
+  
+  /* TIM10 Counter Enable */
+  TIM_Cmd(TIM5, ENABLE);
+
+  /* Reset the flags */
+  TIM5->SR = 0;
+    
+  /* Enable the CC4 Interrupt Request */  
+  TIM_ITConfig(TIM5, TIM_IT_CC4, ENABLE);  
+}
+#endif
+
+#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
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/