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void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim){

  	  if(htim == &htim6){
  		  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2,GPIO_PIN_SET);
  		  HAL_UART_Transmit(&huart3, tx1, sizeof(tx1),10);
  		HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4,GPIO_PIN_RESET);
  		  HAL_TIM_Base_Stop_IT(&htim6);
  		HAL_TIM_Base_Start_IT(&htim7);

  	  }
  	  else if(htim == &htim7){

  	  		  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_3,GPIO_PIN_SET);
  	  		  HAL_UART_Transmit(&huart3, tx2, sizeof(tx2),10);
  	  		HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2,GPIO_PIN_RESET);
  	  		HAL_TIM_Base_Stop_IT(&htim7);
  	  	    HAL_TIM_Base_Start_IT(&htim13);

  	  	  }
  	  else if(htim == &htim13){

  	  		  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4,GPIO_PIN_SET);
  	  		  HAL_UART_Transmit(&huart3, tx3, sizeof(tx3),10);
  	  		HAL_GPIO_WritePin(GPIOA, GPIO_PIN_3,GPIO_PIN_RESET);
  	  		HAL_TIM_Base_Stop_IT(&htim13);
  	  	   HAL_TIM_Base_Start_IT(&htim6);
  	  	  }
    }


static void MX_TIM6_Init(void)
{

  /* USER CODE BEGIN TIM6_Init 0 */

  /* USER CODE END TIM6_Init 0 */

  TIM_MasterConfigTypeDef sMasterConfig = {0};

  /* USER CODE BEGIN TIM6_Init 1 */

  /* USER CODE END TIM6_Init 1 */
  htim6.Instance = TIM6;
  htim6.Init.Prescaler = 40000;
  htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim6.Init.Period = 10000-1;
  htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim6) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM6_Init 2 */

  /* USER CODE END TIM6_Init 2 */

}


static void MX_TIM7_Init(void)
{

  /* USER CODE BEGIN TIM7_Init 0 */

  /* USER CODE END TIM7_Init 0 */

  TIM_MasterConfigTypeDef sMasterConfig = {0};

  /* USER CODE BEGIN TIM7_Init 1 */

  /* USER CODE END TIM7_Init 1 */
  htim7.Instance = TIM7;
  htim7.Init.Prescaler = 40000;
  htim7.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim7.Init.Period = 20000-1;
  htim7.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim7) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim7, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM7_Init 2 */

  /* USER CODE END TIM7_Init 2 */

}


static void MX_TIM13_Init(void)
{

  /* USER CODE BEGIN TIM13_Init 0 */

  /* USER CODE END TIM13_Init 0 */

  /* USER CODE BEGIN TIM13_Init 1 */

  /* USER CODE END TIM13_Init 1 */
  htim13.Instance = TIM13;
  htim13.Init.Prescaler = 40000;
  htim13.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim13.Init.Period = 30000-1;
  htim13.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim13.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim13) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM13_Init 2 */

  /* USER CODE END TIM13_Init 2 */

}