可對初學者有一定借鑒作用

//開時鐘

CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER2, ENABLE);

//賦值前先關(guān)

TIM2_DeInit();

TIM2_Cmd(DISABLE);

TIM2_TimeBaseInit(TIM2_PRESCALER_2, 1427);//1427*1us=700HZ

//PWM1 Mode configuration: Channel3,50%

TIM2_OC3Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,713, TIM2_OCPOLARITY_HIGH);

//捕獲比較寄存器CCR1

TIM2_OC3PreloadConfig(ENABLE);

//自動裝載寄存器ARR

TIM2_ARRPreloadConfig(ENABLE);

TIM2_Cmd(ENABLE);