（已解决）TIM1_CH1N怎么才能输出PWM？要配置TIM1_CH1么？（已解决）

雨思小米粥 · 发表于 2014-12-5 17:09:42

是配置TIM1_CH1输出PWM波之后TIM1_CH1N就有互补的PWM波产生了么？
现在引脚领导定了，就是要用PA7输出PWM，怎么办啊？

雨思小米粥 · 发表于 2014-12-5 17:09:43

弄好了，，，配置程序如下~~
void TIM1_Mode_Config(uint16_t ADvalue1)
{
    u16 pulse;
    TIM_OCInitTypeDef TIM_OCInitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_BDTRInitTypeDef TIM_BDTRInitStructure;


    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
    GPIO_PinRemapConfig(GPIO_PartialRemap_TIM1,ENABLE);

       GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    pulse = (4295-ADvalue1)/2;

    TIM_TimeBaseStructure.TIM_Period    = (4295-ADvalue1);//ARR 10K
    TIM_TimeBaseStructure.TIM_Prescaler = 800;//每计一个数为1us
    TIM_TimeBaseStructure.TIM_ClockDivision     = 0;
    TIM_TimeBaseStructure.TIM_RepetitionCounter = 0x0000;
    TIM_TimeBaseStructure.TIM_CounterMode       = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

    //TIM_ARRPreloadConfig(TIM1, DISABLE); //预装载寄存器的内容被立即传送到影子寄存器

    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OCInitStructure.TIM_OutputState  = TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
    TIM_OCInitStructure.TIM_Pulse = pulse;//CCR
    TIM_OCInitStructure.TIM_OCPolarity   = TIM_OCPolarity_High;
    TIM_OCInitStructure.TIM_OCNPolarity  = TIM_OCNPolarity_High;
    TIM_OCInitStructure.TIM_OCIdleState  = TIM_OCIdleState_Set;
    TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
    TIM_OC1Init(TIM1, &TIM_OCInitStructure);

    TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
    TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
        TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
        TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_OFF;
        TIM_BDTRInitStructure.TIM_DeadTime = 0;  //这里调整死区大小0-0xff
        TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;
        TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
        TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
        TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);
    //TIM_OC1NPolarityConfig(TIM1, TIM_OCNPolarity_High);
    //TIM_OC1PolarityConfig(TIM1,TIM_OCPolarity_Low);

    //TIM_CCPreloadControl(TIM1, ENABLE);
    TIM_Cmd(TIM1, ENABLE);
    TIM_CtrlPWMOutputs(TIM1, ENABLE);

}