哪位仁兄能帮我把这段换成库函数版

逍遥winter · 发表于 2014-8-2 17:23:08

   RCC->APB2ENR|=1<<11;           //设置TIM1定时器时钟开启
TIM1->SMCR&=0XFFF0;    //选择定时器TIM1时钟源为内部时钟，即SMS[2：0]为000B

TIM1->ARR=arr;                //设置自动重装载寄存器，16为寄存器
TIM1->

SC=psc;                 //设置TIM1 预分频器，16为寄存器
TIM1->RCR=0;     //设置重复计数器的值为0，即REP[7：0]为0
TIM1->CR1&=0xffef;   //设置DIR为0，即计数器向上计数

TIM1->CR1|=1<<2;      //选择更新请求源，设置URS
TIM1->DIER|=1;    //UIE=1;允许更新中断
TIM1->CR1|=1;        // 使能计数器，CEN=1

MY_NVIC_Init(1,3 ,TIM1_UP_IRQChannel,1);

逍遥winter · 发表于 2014-8-2 17:23:09

深感还是自己基础不好，对着中文参考手册和固件库，大概弄明白了
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_ICInitTypeDef  TIM_ICInitStructure;


GPIO_InitTypeDef  GPIO_InitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

TIM_SelectSlaveMode(TIM3,TIM_SlaveMode_External1);   //SMCR:SMS[2:0]=111,从模式选择,为外部时钟模式1
TIM_SelectInputTrigger(TIM3,TIM_TS_TI1FP1);     //SMCR:TS[2:0]=101,同步计数器的触发输入,滤波后的定时器输入1（TI1FP1）

TIM_ICInitStructure.TIM_Channel = TIM_Channel_1;   //CCMR1：CC1S[1:0]=01,选择输入端 IC1
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;   //CCMR1：CC1S[1:0]=01,映射到TI1上
   TIM_ICInitStructure.TIM_ICFilter = 0x00;   //CCMR1:IC1F[3:0]=0000,配置输入滤波器不滤波
   TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1; //CCMR:IC1PSC[1:0]=00,配置输入分频,不分频,一个事件捕获一次
   TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;   //CCER:CCIP=0,上升沿捕获
   TIM_ICInit(TIM3, &TIM_ICInitStructure);

TIM_TimeBaseStructure.TIM_Period = arr;
TIM_TimeBaseStructure.TIM_Prescaler =psc;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

TIM_Cmd(TIM3, ENABLE);