stm32f103的TIM1六路输出PWM控制问题

伪摇滚 · 发表于 2018-10-27 18:05:55

目前想做STM32F103的BLDC驱动，因为六步换向是每次有两个MOS管导通，那TIM1的三通道六路互补输出每次只有两路有输出，所以我需要不停开关各路PWM输出，可是我用了 TIM_CCxCmd(TIM1, TIM_Channel_1, TIM_CCx_Disable)函数不行，用CCER寄存器配置也不行，用TIM_OC3PolarityConfig(TIM1, 0)函数也不行，怎么设置都不影响六路的一起输出，请问是哪里出了问题？
以下是我配置TIM1的函数代码

TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_BDTRInitTypeDef TIM_BDTRInitStructure;

TIM_DeInit(TIM1);

TIM_TimeBaseInitStructure.TIM_Prescaler=23;
TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up;
TIM_TimeBaseInitStructure.TIM_Period=10000;
TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
TIM_TimeBaseInitStructure.TIM_RepetitionCounter=0;
TIM_TimeBaseInit(TIM1,&TIM_TimeBaseInitStructure);
TIM_ARRPreloadConfig(TIM1,ENABLE);

TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OutputNState=TIM_OutputNState_Enable;
TIM_OCInitStructure.TIM_Pulse=5000;
TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCNPolarity=TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState=TIM_OCIdleState_Reset;
TIM_OCInitStructure.TIM_OCNIdleState=TIM_OCNIdleState_Reset;

TIM_OC1Init(TIM1,&TIM_OCInitStructure);
TIM_OC2Init(TIM1,&TIM_OCInitStructure);
TIM_OC3Init(TIM1,&TIM_OCInitStructure);

TIM_BDTRInitStructure.TIM_OSSRState=TIM_OSSRState_Enable;
TIM_BDTRInitStructure.TIM_OSSIState=TIM_OSSIState_Enable;
TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_OFF;
TIM_BDTRInitStructure.TIM_DeadTime=0x08;
TIM_BDTRInitStructure.TIM_Break=TIM_Break_Disable;
TIM_BDTRInitStructure.TIM_AutomaticOutput=TIM_AutomaticOutput_Enable;
TIM_BDTRConfig(TIM1,&TIM_BDTRInitStructure);

TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable);
TIM_OC2PreloadConfig(TIM1,TIM_OCPreload_Enable);
TIM_OC3PreloadConfig(TIM1,TIM_OCPreload_Enable);

TIM_Cmd(TIM1,ENABLE);

TIM_CCPreloadControl(TIM1,ENABLE);

TIM_CtrlPWMOutputs(TIM1,ENABLE);
}
求大神帮助解答！