diff --git a/main.c b/main.c
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+++ b/main.c
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+/**
+  ******************************************************************************
+  * @file    main.c 
+  * @author  MCD Application Team
+  * @version V1.0.0
+  * @date    29-July-2013
+  * @brief   Main program body
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+#include "stm32l100c_discovery.h"
+/** @addtogroup STM32L100C-Discovery_Demo
+  * @{
+  */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+static __IO uint32_t TimingDelay;
+uint8_t BlinkSpeed = 0;
+
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/**
+  * @brief  Main program.
+  * @param  None
+  * @retval None
+  */
+int main(void)
+{
+  RCC_ClocksTypeDef RCC_Clocks;
+  
+  /* Configure LED3 and LED4 on STM32L100C-Discovery */
+  STM_EVAL_LEDInit(LED3);
+  STM_EVAL_LEDInit(LED4);
+  
+  /* Initialize User_Button on STM32L100C-Discovery */
+  STM_EVAL_PBInit(BUTTON_USER, BUTTON_MODE_GPIO);
+  
+  /* SysTick end of count event each 1ms */
+  RCC_GetClocksFreq(&RCC_Clocks);
+  SysTick_Config(RCC_Clocks.HCLK_Frequency / 1000);
+   
+  /* Initiate Blink Speed variable */ 
+  BlinkSpeed = 1;
+  
+  while(1)
+  {  
+    /* Check if the user button is pressed */
+    if(STM_EVAL_PBGetState(BUTTON_USER)== SET)
+    {
+      /* BlinkSpeed: 1 -> 2 -> 0, then re-cycle */
+      /* Turn on LD4 Blue LED during 1s each time User button is pressed */
+      STM_EVAL_LEDOn(LED4);
+      
+      /* wait for 1s */
+      Delay(1000);
+      
+      /* Turn off LD4 Blue LED after 1s each time User button is pressed */
+      STM_EVAL_LEDOff(LED4);
+      
+      /* Increment the blink speed counter */
+      BlinkSpeed++;
+      
+      /* Default value for blink speed counter */
+      if(BlinkSpeed == 3)
+      {  
+        BlinkSpeed = 0;
+      }
+    }
+    
+    /* Test on blink speed */
+    if(BlinkSpeed == 2)
+    {
+      /* LED3 toggles each 100 ms */
+      STM_EVAL_LEDToggle(LED3);
+      
+      /* maintain LED3 status for 100ms */
+      Delay(100);
+    }
+    else if(BlinkSpeed == 1)
+    {
+      /* LED3 toggles each 200 ms */
+      STM_EVAL_LEDToggle(LED3);
+      
+      /* maintain LED3 status for 200ms */
+      Delay(200);
+    }
+    else
+    {  
+      /* LED3 Off */
+      STM_EVAL_LEDOff(LED3);
+    }
+  }
+}
+
+/**
+  * @brief  Inserts a delay time.
+  * @param  nTime: specifies the delay time length, in 1 ms.
+  * @retval None
+  */
+void Delay(__IO uint32_t nTime)
+{
+  TimingDelay = nTime;
+
+  while(TimingDelay != 0);
+}
+
+/**
+  * @brief  Decrements the TimingDelay variable.
+  * @param  None
+  * @retval None
+  */
+void TimingDelay_Decrement(void)
+{
+  if (TimingDelay != 0x00)
+  { 
+    TimingDelay--;
+  }
+}
+
+#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 STMicroelectronics *****END OF FILE****/