void MX_TIM3_Init(void)

{

  TIM_ClockConfigTypeDef sClockSourceConfig;

  TIM_MasterConfigTypeDef sMasterConfig;

  htim3.Instance = TIM3;

  htim3.Init.Prescaler = ;

  htim3.Init.CounterMode = TIM_COUNTERMODE_UP;

  htim3.Init.Period = ;

  htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;

  htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;

  if (HAL_TIM_Base_Init(&htim3) != HAL_OK)

  {

    _Error_Handler(__FILE__, __LINE__);

  }

  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;

  if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)

  {

    _Error_Handler(__FILE__, __LINE__);

  }

  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;

  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;

  if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)

  {

    _Error_Handler(__FILE__, __LINE__);

  }

}

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)

{

    static int counter = ;

    if(counter %  == ){

        LED_RED_ON;

        LED_BLUE_OFF;

        LED_GREEN_OFF;

    }else if(counter %  == ){

        LED_RED_OFF;

        LED_BLUE_ON;

        LED_GREEN_OFF;

    }else if(counter %  == ){

        LED_RED_OFF;

        LED_BLUE_OFF;

        LED_GREEN_ON;

    }

    counter ++;

}