STM32 通用定时器产生多通道PWM输出，会相互影响，怎么办？？？？

STM32通用定时器产生多通道PWM输出，会相互影响，怎么办？？？？#define_CH11

#define_CH22

#define_CH33

#define_CH44

#define_CH55

#define_CH66

#define_CH77

#define_CH88

#defineCH1_CH4_PWM_GPIO_CLKRCC_APB2Periph_GPIOC

#defineCH1_CH4_PWM_CLKRCC_APB1Periph_TIM3

#defineCH1_CH4_PWMTIM3

#defineCH1_PWM_GPIO_PORTGPIOC

#defineCH1_PWM_PINGPIO_Pin_9

#defineCH2_PWM_GPIO_PORTGPIOC

#defineCH2_PWM_PINGPIO_Pin_8

#defineCH3_PWM_GPIO_PORTGPIOC

#defineCH3_PWM_PINGPIO_Pin_7

#defineCH4_PWM_GPIO_PORTGPIOC

#defineCH4_PWM_PINGPIO_Pin_6

#defineCH5_CH8_PWM_GPIO_CLKRCC_APB2Periph_GPIOB

#defineCH5_CH8_PWM_CLKRCC_APB1Periph_TIM4

#defineCH5_CH8_PWMTIM4

#defineCH5_PWM_GPIO_PORTGPIOB

#defineCH5_PWM_PINGPIO_Pin_9

#defineCH6_PWM_GPIO_PORTGPIOB

#defineCH6_PWM_PINGPIO_Pin_8

#defineCH7_PWM_GPIO_PORTGPIOB

#defineCH7_PWM_PINGPIO_Pin_7

#defineCH8_PWM_GPIO_PORTGPIOB

#defineCH8_PWM_PINGPIO_Pin_6

#definePWM_Freq(500-1)

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

**名称:vLight_SetPWMInit

**描述:各通道PWM输出配置;

**开启外设时钟及配置输出模式

**

**输入:无

**输出:无

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

voidvLight_SetPWMConfig(void)

{

/*PWM输出GPIO配置*/

vLight_PWMGpioInit();

/*PWM输出模式配置*/

vLight_PWMModeInit();

}

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

**名称:vLight_PWMGpioInit

**描述:PWM输出GPIO配置;

**开启外设时钟及配置输出模式

**

**输入:无

**输出:无

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

voidvLight_PWMGpioInit(void)

{

GPIO_InitTypeDefGPIO_InitStructure;

/*使能外设时钟*/

RCC_APB2PeriphClockCmd(CH1_CH4_PWM_GPIO_CLK

CH5_CH8_PWM_GPIO_CLK

RCC_APB2Periph_AFIO,ENABLE);

RCC_APB1PeriphClockCmd(CH1_CH4_PWM_CLK

CH5_CH8_PWM_CLK,ENABLE);

/*引脚重映*/

GPIO_PinRemapConfig(GPIO_FullRemap_TIM3,ENABLE);

/*配置vLight_PWMGpio*/

GPIO_InitStructure.GPIO_Pin=CH1_PWM_PIN

CH2_PWM_PIN

CH3_PWM_PIN

CH4_PWM_PIN;

GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;

GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;

GPIO_Init(CH1_PWM_GPIO_PORT,&GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin=CH5_PWM_PIN

CH6_PWM_PIN

CH7_PWM_PIN

CH8_PWM_PIN;

GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;

GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;

GPIO_Init(CH5_PWM_GPIO_PORT,&GPIO_InitStructure);

}

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

**名称:vLight_PWMModeInit

**描述:PWM输出模式配置;

**设置PWM工作频率,计数模式,占空比

**

**输入:无

**输出:无

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

voidvLight_PWMModeInit(void)

{

TIM_TimeBaseInitTypeDefTIM_TimeBaseStructure;

TIM_OCInitTypeDefTIM_OCInitStructure;

//TIM_BDTRInitTypeDefTIM_BDTRInitStructure;

//定时器工作在单脉冲下

TIM_DeInit(CH1_CH4_PWM);

TIM_TimeBaseStructure.TIM_Period=PWM_Freq;//计数值，即定时周期

TIM_TimeBaseStructure.TIM_Prescaler=0;//预分频，不分频为72MHz

TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;//时钟分频系数

TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;//向上计数模式

TIM_TimeBaseInit(CH1_CH4_PWM,&TIM_TimeBaseStructure);

TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;//在向上计数

TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_Low;

/*配置通道1*/

TIM_OCInitStructure.TIM_Pulse=0;

TIM_OC4Init(CH1_CH4_PWM,&TIM_OCInitStructure);

TIM_OC4PreloadConfig(CH1_CH4_PWM,TIM_OCPreload_Enable);

/*配置通道2*/

TIM_OCInitStructure.TIM_Pulse=0;

TIM_OC3Init(CH1_CH4_PWM,&TIM_OCInitStructure);

TIM_OC3PreloadConfig(CH1_CH4_PWM,TIM_OCPreload_Enable);

/*配置通道3*/

TIM_OCInitStructure.TIM_Pulse=0;

TIM_OC2Init(CH1_CH4_PWM,&TIM_OCInitStructure);

TIM_OC2PreloadConfig(CH1_CH4_PWM,TIM_OCPreload_Enable);

/*配置通道4*/

TIM_OCInitStructure.TIM_Pulse=0;

TIM_OC1Init(CH1_CH4_PWM,&TIM_OCInitStructure);

TIM_OC1PreloadConfig(CH1_CH4_PWM,TIM_OCPreload_Enable);

TIM_ARRPreloadConfig(CH1_CH4_PWM,ENABLE);

TIM_Cmd(CH1_CH4_PWM,ENABLE);//先不使能能TIM

//定时器工作在单脉冲下

TIM_DeInit(CH5_CH8_PWM);

TIM_TimeBaseStructure.TIM_Period=PWM_Freq;//计数值，即定时周期

TIM_TimeBaseStructure.TIM_Prescaler=0;//预分频，不分频为72MHz

TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;//时钟分频系数

TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;//向上计数模式

TIM_TimeBaseInit(CH5_CH8_PWM,&TIM_TimeBaseStructure);

TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;//在向上计数

TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_Low;

/*配置通道5*/

TIM_OCInitStructure.TIM_Pulse=0;

TIM_OC4Init(CH5_CH8_PWM,&TIM_OCInitStructure);

TIM_OC4PreloadConfig(CH5_CH8_PWM,TIM_OCPreload_Enable);

/*配置通道6*/

TIM_OCInitStructure.TIM_Pulse=0;

TIM_OC3Init(CH5_CH8_PWM,&TIM_OCInitStructure);

TIM_OC3PreloadConfig(CH5_CH8_PWM,TIM_OCPreload_Enable);

/*配置通道7*/

TIM_OCInitStructure.TIM_Pulse=0;

TIM_OC2Init(CH5_CH8_PWM,&TIM_OCInitStructure);

TIM_OC2PreloadConfig(CH5_CH8_PWM,TIM_OCPreload_Enable);

/*配置通道8*/

TIM_OCInitStructure.TIM_Pulse=0;

TIM_OC1Init(CH5_CH8_PWM,&TIM_OCInitStructure);

TIM_OC2PreloadConfig(CH5_CH8_PWM,TIM_OCPreload_Enable);

TIM_ARRPreloadConfig(CH5_CH8_PWM,ENABLE);

TIM_Cmd(CH5_CH8_PWM,ENABLE);//先不使能能TIM

}

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

**名称:vLight_PWMModeInit

**描述:PWM输出模式配置;

**设置PWM工作频率,计数模式,占空比

**

**输入:无

**输出:无

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

voidvLight_SetPWM(uint8_tuCH,uint16_tuCycle)

{

switch(uCH)

{

case_CH1:

{

TIM_SetCompare4(CH1_CH4_PWM,uCycle);

break;

}

case_CH2:

{

TIM_SetCompare3(CH1_CH4_PWM,uCycle);

break;

}

case_CH3:

{

TIM_SetCompare2(CH1_CH4_PWM,uCycle);

break;

}

case_CH4:

{

TIM_SetCompare1(CH1_CH4_PWM,uCycle);

break;

}

case_CH5:

{

TIM_SetCompare4(CH5_CH8_PWM,uCycle);

break;

}

case_CH6:

{

TIM_SetCompare3(CH5_CH8_PWM,uCycle);

break;

}

case_CH7:

{

TIM_SetCompare2(CH5_CH8_PWM,uCycle);

break;

}

case_CH8:

{

TIM_SetCompare1(CH5_CH8_PWM,uCycle);

break;

}

default:break;

}

}

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不知道你想产生什么样的信号,别那一大堆毛病代码出来让人给你看病,好么

不会吧。

估计是你寄存器设置有问题。