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標(biāo)題: stm32產(chǎn)生100%占空比的PWM,定時器TIM_Period參數(shù)設(shè)置問題 [打印本頁]

作者: gaoyijn 時間: 2019-2-22 14:28
標(biāo)題: stm32產(chǎn)生100%占空比的PWM,定時器TIM_Period參數(shù)設(shè)置問題
TIM_TimeBaseInitTypeDef TIM_BaseInitStructure;

TIM_BaseInitStructure.TIM_Prescaler = 2-1;
TIM_BaseInitStructure.TIM_Period = 1500-1;
TIM_BaseInitStructure.TIM_ClockDivision = 0;
TIM_BaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_BaseInitStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM1, &TIM_BaseInitStructure);

如果使用上面的設(shè)置，產(chǎn)生100%占空比的PWM，參數(shù)TIM1_OCInitStructure.TIM_Pulse應(yīng)該設(shè)置1500還是1499

作者: kelle 時間: 2020-3-9 15:34
pulse = (period + 1)*Dutycycle / 100

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