STM32F103，怎么解决 PWM1_CH1，PWM1_CH1N 和 PWM1_CH3，PWM1_CH3N 成对出现的问题。

桂某某

我没办法实现PWM1_CH1N和PWM1_CH3同时输出PWM，而不影响到PWM1_CH1和PWM1_CH3N （保持原来电平不变）。
我是这样配置的。
void TIM1_Configuration(void)
{
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
  TIM_OCInitTypeDef  TIM_OCInitStructure; 

GPIO_PinRemapConfig(GPIO_FullRemap_TIM1,ENABLE);//PE8  E13
TIM_TimeBaseStructure.TIM_Period=899; 
TIM_TimeBaseStructure.TIM_Prescaler=0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;  
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; 
TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure);
  
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; 

TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Set; 
TIM_OCInitStructure.TIM_OCIdleState  = TIM_OCIdleState_Reset; 
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low; 
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; 

TIM_OC1Init(TIM1, &TIM_OCInitStructure); 
TIM_OC3Init(TIM1, &TIM_OCInitStructure);  
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable); 
TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable); 

TIM_CtrlPWMOutputs(TIM1, ENABLE);
TIM_Cmd(TIM1, ENABLE);
TIM_CCPreloadControl(TIM1, ENABLE);

}

/*****************************************************************************
                                                            时钟
*****************************************************************************/

void RCC_Configuration(void)
{
SystemInit();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); //????????
}


/*****************************************************************************
                                            GPIO
*****************************************************************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOE , & GPIO_InitStructure);
}

PE8(CH1N), PE9(CH1) , PE12(CH3N), PE13(CH3)都输出了PWM。而我需要的仅仅是PE8(CH1N)，PE13(CH3)来输出PWM，PE9,PE12还能做其他事情

XCDesigner

TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Set; 
TIM_OCInitStructure.TIM_OCIdleState  = TIM_OCIdleState_Reset; 
 TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low; 
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; 

 TIM_OC1Init(TIM1, &TIM_OCInitStructure); 

TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Disable;

 TIM_OC3Init(TIM1, &TIM_OCInitStructure);

lycreturn

仅配置PE8 E13为复用功能输出，如果还不行则关掉互补输出功能

桂某某

求解答，急急急急急急急急急急急急急急急急急急急急急急急

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回复【4楼】lycreturn:
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醍醐灌顶啊！！  如此简单就将我的问题解决了。膜拜！！  
多谢，我把PE9  E12改成推挽输出问题就解决了，PE9 E12还能受我控制，不被PWM影响。

桂某某

回复【3楼】XCDesigner:
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在CH1N工作时关闭CH1的使能，在CH3工作时关闭CH3N的使能。  看懂了，多谢解答。