TIM1利用库函数TIM_CCxCmd();没法关闭指定PWM通道

星空遐想xxx

        程序已经配置好了TIM1定时器6路输出，且成功输出PWM互补波，但我想关闭指定的PWM输出通道，利用库函数TIM_CCxCmd()却关闭不了通道，但可以关闭TIM2定时器的通道。求大神指点迷津~~

        以下是程序：
#include "stm32f10x.h" 
#include "delay.h"

/******************************************************************

TM1互补PWM输出

*******************************************************************/

void GPIO_InitX(void)
{

   GPIO_InitTypeDef GPIO_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB,ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10; // Channel 1, 2 and 3 
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15; //Channel 1N, 2N and 3N
  GPIO_Init(GPIOB, &GPIO_InitStructure);

}


/**
  * @brief  Configures the nested vectored interrupt controller.
  * @param  None
  * @retval None
  */

void TIM1_Configuration()
{

   TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
   TIM_OCInitTypeDef       TIM_OCInitStructure;
   TIM_BDTRInitTypeDef     TIM_BDTRInitStructure;

   TIM_DeInit(TIM1);

   RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1|RCC_APB2Periph_AFIO, ENABLE);

  TIM_TimeBaseStructure.TIM_Prescaler = 0;              // Time Base configuration 
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseStructure.TIM_Period = 3300;
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;

  TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
  TIM_ARRPreloadConfig(TIM1,ENABLE);

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;      // Channel 1, 2,3 and 4 Configuration in PWM mode 
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
  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;        // Automatic Output enable, Break, dead time and lock configuration
  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_BreakPolarity = TIM_BreakPolarity_High;
  TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;

  TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);  

  TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable);     //预装载使能
  TIM_OC2PreloadConfig(TIM1,TIM_OCPreload_Enable);
  TIM_OC3PreloadConfig(TIM1,TIM_OCPreload_Enable);

  TIM_Cmd(TIM1, ENABLE);

  TIM_CCPreloadControl(TIM1, ENABLE);

  TIM_CtrlPWMOutputs(TIM1, ENABLE);


  // Channel1 configuration
  TIM_CCxCmd(TIM1, TIM_Channel_1, TIM_CCx_Disable);
  TIM_CCxNCmd(TIM1, TIM_Channel_1, TIM_CCxN_Disable);
 
  // Channel2 configuration 
  TIM_CCxCmd(TIM1, TIM_Channel_2, TIM_CCx_Enable);
  TIM_CCxNCmd(TIM1, TIM_Channel_2, TIM_CCxN_Enable);
 
// Channel3 configuration
TIM_CCxCmd(TIM1, TIM_Channel_3, TIM_CCx_Disable);
  TIM_CCxNCmd(TIM1, TIM_Channel_3, TIM_CCxN_Disable);


}

int main(void)
{
  u16 load = 0;
 
  delay_init();

  GPIO_InitX();

  TIM1_Configuration();

   while (1)
  {
     delay_ms(10);

     if(load>=3150) load = 0;
     load++;
     TIM_SetCompare1(TIM1,load); 
     TIM_SetCompare2(TIM1,load); 
     TIM_SetCompare3(TIM1,load); 
    }
}

正点原子

帮顶....

sweetstandard

让PWM脉宽为0吧，就相当于关上了。