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標(biāo)題: stm32輸出PWM波形輸出波形為什么有兩個請問程序怎么改 [打印本頁]

作者: 貪吃的老鱷魚 時間: 2019-9-3 14:21
標(biāo)題: stm32輸出PWM波形輸出波形為什么有兩個請問程序怎么改
stm32輸出PWM波形輸出波形為什么有兩個請問程序怎么改，請教各位

51hei圖片_20190903141954.jpg (128.81 KB, 下載次數(shù): 43)

51hei圖片_20190903141941.jpg (113.62 KB, 下載次數(shù): 35)

PWM輸出實驗PB5.7z

188.19 KB, 下載次數(shù): 6

作者: 貪吃的老鱷魚 時間: 2019-9-5 12:50
dd 自己頂貼

作者: fxw0620 時間: 2019-9-5 17:16
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
GPIO_PinRemapConfig(GPIO_FullRemap_TIM3, ENABLE);

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

TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR4_Val;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC1Init(TIM3, &TIM_OCInitStructure);
//TIM_OC2Init(TIM3, &TIM_OCInitStructure);
TIM_SelectOutputTrigger(TIM3,TIM_TRGOSource_Update);
TIM_SelectMasterSlaveMode(TIM3, TIM_MasterSlaveMode_Enable);
TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
//TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_ARRPreloadConfig(TIM3, ENABLE);

作者: fxw0620 時間: 2019-9-5 17:17
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
GPIO_PinRemapConfig(GPIO_FullRemap_TIM3, ENABLE);

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

TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR4_Val;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC1Init(TIM3, &TIM_OCInitStructure);
TIM_SelectOutputTrigger(TIM3,TIM_TRGOSource_Update);
TIM_SelectMasterSlaveMode(TIM3, TIM_MasterSlaveMode_Enable);
TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_ARRPreloadConfig(TIM3, ENABLE);

作者: l6931639 時間: 2019-9-5 17:29
定時器的參數(shù)發(fā)生了變化？還是你用了多個定時器干擾了？

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