ssyx1234 发表于 2016-9-21 09:40:03

我想用tim1输出pwm。这样配置了。不知道哪里错了。没有输出

#include "bsp_spwm_output.h"

static void TIM1_Mode_Config(void)
{
   
GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_OCInitTypeDefTIM_OCInitStructure;

    /* GPIOA clocks enable */
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
    /* TIM1 clock enable */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOA,&GPIO_InitStructure);

    /* Connect TIM pins to AF6 */
    GPIO_PinAFConfig(GPIOA, GPIO_PinSource8, GPIO_AF_2);

    /* Time Base configuration */
    TIM_TimeBaseStructure.TIM_Prescaler = 0;         
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_CenterAligned1;   
    TIM_TimeBaseStructure.TIM_Period = 600;         
    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;      
    TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;      
    TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure);
   
    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;      
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;   
    TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;   
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;      
    TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;      
    TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;   
    TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
    TIM_OCInitStructure.TIM_Pulse = 200;         
    TIM_OC1Init(TIM1,&TIM_OCInitStructure);            

    TIM_CtrlPWMOutputs(TIM1, ENABLE);            
    TIM_Cmd(TIM1,ENABLE);   
}

void TIM1_SPWM_Init(void)
{
   TIM1_Mode_Config();
}

ssyx1234 发表于 2016-9-21 09:58:20

我用的3203r8

高二毛 发表于 2016-9-21 10:41:12

请查看一下标准库提供的例子，例子是TIM3进行的PWM输出，你可以参考一下。

ssyx1234 发表于 2016-9-21 11:20:41

嗯，好的:)

eefishing 发表于 2016-10-2 15:24:15

楼主解决了吗
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