刚刚接触嵌入式，请大神指教一下这个程序段（想要定时1S）

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
}