void TIM2_Configuration()
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_TimeBaseStructure.TIM_Period = ( );
    TIM_TimeBaseStructure.TIM_Prescaler = 3600-1;
    TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode( );
    TIM_TimeBaseInit(TIM2,&TIM_TimeBaseStructure);
    TIM_ClearFlag(TIM2,( ));//清除更新标志
    TIM_ITConfig(TIM2,( ),( ));//开中断
    TIM_Cmd(TIM2,( ));//使能定时器2
}

小括号中该填什么？？？

void TIM2_Configuration(void)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_TimeBaseStructure.TIM_Period = ( 2000-1 );
    TIM_TimeBaseStructure.TIM_Prescaler = 3600-1;
    TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode( _up );
    TIM_TimeBaseInit(TIM2,&TIM_TimeBaseStructure);
    TIM_ClearFlag(TIM2,( TIM_IT_Update ));//清除更新标志
    TIM_ITConfig(TIM2,( TIM_IT_Update ),( EIVABLE ));//开中断
    TIM_Cmd(TIM2,( EIVABLE ));//使能定时器2
}