高级会员
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- 积分
- 944
- 金钱
- 944
- 注册时间
- 2014-10-9
- 在线时间
- 93 小时
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5金钱
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOH, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;
GPIO_Init(GPIOH, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOH, GPIO_PinSource11, GPIO_AF_TIM5);
PrescalerValue = (uint16_t) ((SystemCoreClock /2) / 21000000) - 1;
TIM_TimeBaseStructure.TIM_Period = 665;
TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 333;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM5, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM5, TIM_OCPreload_Enable);
TIM_ARRPreloadConfig(TIM5, ENABLE);
TIM_Cmd(TIM5, ENABLE);
为什么我用PH10(TIM5CH1)输出PWM波就可以,为什么我用PH11(TIM5CH2)输出PWM就不行呢,是本来就不可以输出,还是配置错了,或者是因为IO口坏了?
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最佳答案
查看完整内容[请看2#楼]
TIM_OC1PreloadConfig——>TIM_OC2PreloadConfig
TIM_OC1Init——>TIM_OC2Init
已解决,希望别人不要和我一样犯一样的错误!
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