啊啊啊啊~想用STM32F76 定时器产生PWM输出，例程是用TIM3的通道4来产生的，在管脚处产生PWM输出信号，然后我想换成TIM1的通道1产生，但是死活不对……好几天真的是不知道什么原因……求大家帮忙……

#include "tim.h"

TIM_HandleTypeDef htim1;

/* TIM1 init function */
void MX_TIM1_Init(void)
{

  TIM_MasterConfigTypeDef sMasterConfig;
  TIM_OC_InitTypeDef sConfigOC;

  htim1.Instance = TIM1;
  htim1.Init.Prescaler = 107;
  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim1.Init.Period = 124;
  htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim1.Init.RepetitionCounter = 0;
HAL_TIM_PWM_DeInit(&htim1);
  HAL_TIM_PWM_Init(&htim1);


  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig);


  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 63;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_LOW;
  sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;

HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1);

HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_1);
}



void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef* timHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct;
__HAL_RCC_TIM1_CLK_ENABLE();                     
__HAL_RCC_GPIOA_CLK_ENABLE();  

    /**TIM1 GPIO Configuration   
    PE9     ------> TIM1_CH1
               
    */
    GPIO_InitStruct.Pin = GPIO_PIN_9;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF1_TIM1;
    HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);

}