TIM1产生6路PWM波不出波形！！！求指导

#include "stm32f10x.h"

#include "pwm.h"



void TIM1_GPIO_Configuration(void)

{

        GPIO_InitTypeDef GPIO_InitStructure;

        GPIO_PinRemapConfig(GPIO_FullRemap_TIM1,ENABLE);

        RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO|RCC_APB2Periph_GPIOE|RCC_APB2Periph_TIM1,ENABLE);

        GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;

        GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13;

        GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;

        GPIO_Init(GPIOE,&GPIO_InitStructure);

}



void TIM1_MODE_Configuration(void)

{        

        TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

        TIM_OCInitTypeDef TIM_OCInitStructure;

        TIM_BDTRInitTypeDef TIM_BDTRInitStructure;

        TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;

        TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_CenterAligned1;

        TIM_TimeBaseInitStructure.TIM_Period=999;

        TIM_TimeBaseInitStructure.TIM_Prescaler=71;

        TIM_TimeBaseInitStructure.TIM_RepetitionCounter=0;

        TIM_TimeBaseInit(TIM1,&TIM_TimeBaseInitStructure);

        TIM_ARRPreloadConfig(TIM1, ENABLE); 

        

        TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM2;

        TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High;

        TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low; 

        TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

        TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;

        TIM_OCInitStructure.TIM_Pulse=500;

        TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;



        TIM_OC1Init(TIM1,&TIM_OCInitStructure); 

        TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable);

        

        TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

        TIM_OCInitStructure.TIM_Pulse=375;

        TIM_OC2Init(TIM1,&TIM_OCInitStructure); 

        TIM_OC2PreloadConfig(TIM1,TIM_OCPreload_Enable);

        

        TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

        TIM_OCInitStructure.TIM_Pulse=250;

        TIM_OC3Init(TIM1,&TIM_OCInitStructure); 

        TIM_OC3PreloadConfig(TIM1,TIM_OCPreload_Enable);

        

        TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

        TIM_OCInitStructure.TIM_Pulse=125;

        TIM_OC4Init(TIM1,&TIM_OCInitStructure); 

        TIM_OC4PreloadConfig(TIM1,TIM_OCPreload_Enable);

        

        TIM_ARRPreloadConfig(TIM1,ENABLE);

        TIM_Cmd(TIM1,ENABLE);

        TIM_CtrlPWMOutputs(TIM1,ENABLE);

}