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楼主 |
发表于 2023-7-31 12:04:33
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被你说对了。
目前定位到,问题来自TIM2 驱动的EG2104S ,而 EG3116D没有问题。
TIM2输出PWM,第一次写,没看出来什么问题。
- GPIO_InitTypeDef gpio;
- TIM_TimeBaseInitTypeDef tim;
- TIM_OCInitTypeDef oc;
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- RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE);
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
- gpio.GPIO_Pin = GPIO_Pin_15;
- gpio.GPIO_Mode = GPIO_Mode_AF;
- gpio.GPIO_OType = GPIO_OType_PP;
- gpio.GPIO_Speed = GPIO_Speed_100MHz;
- GPIO_Init(GPIOA,&gpio);
- GPIO_PinAFConfig(GPIOA, GPIO_PinSource15, GPIO_AF_TIM2);
- tim.TIM_Prescaler = 0;
- tim.TIM_CounterMode = TIM_CounterMode_Up;
- tim.TIM_Period = 4000; //80000000/4000 = 20kHz
- tim.TIM_ClockDivision = TIM_CKD_DIV1;
- TIM_TimeBaseInit(TIM2,&tim);
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- oc.TIM_OCMode = TIM_OCMode_PWM1;
- oc.TIM_OutputState = TIM_OutputState_Enable;
- oc.TIM_Pulse = 0;
- oc.TIM_OCPolarity = TIM_OCPolarity_High;
- TIM_OC1Init(TIM2,&oc);
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- TIM_ARRPreloadConfig(TIM2,ENABLE);
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- TIM_OC1PreloadConfig(TIM2,TIM_OCPreload_Enable);
- TIM_Cmd(TIM2, ENABLE);
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