请大神指点HAL ENCODER问题

chsong9 · 发表于 2016-8-31 15:24:36

刚接触HAL库，写了一个增量编码器4倍频的程序，占用TIM2的CH1,CH2，可以采输入方波信号，可是，每有一个边沿就要触发中断，不能实现预设比如累计200个边沿触发一次中断。初始化代码如下：
// STM32L152
void HAL_TIM2_Init(void)
{

  TIM_Encoder_InitTypeDef sConfig;
//  TIM_MasterConfigTypeDef sMasterConfig;

htim2.State = HAL_TIM_STATE_RESET;
  htim2.Instance = TIM2;
  htim2.Init.Prescaler = 0;
  htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim2.Init.Period = 190;
  htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;

// HAL_TIM_Base_Init(&htim2);

  sConfig.EncoderMode = TIM_ENCODERMODE_TI12;

  sConfig.IC1Polarity = TIM_ICPOLARITY_FALLING;
  sConfig.IC1Selection = TIM_ICSELECTION_DIRECTTI;
  sConfig.IC1Prescaler = TIM_ICPSC_DIV1;
  sConfig.IC1Filter = 6;

  sConfig.IC2Polarity = TIM_ICPOLARITY_BOTHEDGE;
  sConfig.IC2Selection = TIM_ICSELECTION_DIRECTTI;
  sConfig.IC2Prescaler = TIM_ICPSC_DIV1;
  sConfig.IC2Filter = 6;
  if (HAL_TIM_Encoder_Init(&htim2, &sConfig) != HAL_OK)
  {
Error_Handler();
  }
/*
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
  {
Error_Handler();
  }*/

HAL_NVIC_Init();
}

HAL_TIM_Encoder_Start_IT(&htim2,TIM_CHANNEL_ALL);
开启中断。
请大神指点指点