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標(biāo)題: STMF103單片機(jī)讀AB編碼器程序有問題嗎 [打印本頁]

作者: xiuyan 時(shí)間: 2022-2-10 15:58
標(biāo)題: STMF103單片機(jī)讀AB編碼器程序有問題嗎
函數(shù)功能：把TIM2初始化為編碼器接口模式
入口參數(shù)：無
返回  值：無
**************************************************************************/
void Encoder_Init_TIM2(void)
{
      TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
  TIM_ICInitTypeDef TIM_ICInitStructure;
  GPIO_InitTypeDef GPIO_InitStructure;
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//使能定時(shí)器4的時(shí)鐘
//  RCC_APB2PeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);//使能PB端口時(shí)鐘
//
//  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1;       //端口配置
//  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //浮空輸入
//  GPIO_Init(GPIOA, &GPIO_InitStructure);
      //根據(jù)設(shè)定參數(shù)初始化GPIOB
      RCC_APB2PeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);//使能PB端口時(shí)鐘

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7;       //端口配置
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //浮空輸入
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
  TIM_TimeBaseStructure.TIM_Prescaler = 0x0; // 預(yù)分頻器
  TIM_TimeBaseStructure.TIM_Period = 1024; //設(shè)定計(jì)數(shù)器自動(dòng)重裝值
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;//選擇時(shí)鐘分頻：不分頻
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;////TIM向上計(jì)數(shù)
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
  TIM_EncoderInterfaceConfig(TIM2, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);//使用編碼器模式3
  TIM_ICStructInit(&TIM_ICInitStructure);
  TIM_ICInitStructure.TIM_ICFilter = 10;
  TIM_ICInit(TIM2, &TIM_ICInitStructure);
  TIM_ClearFlag(TIM2, TIM_FLAG_Update);//清除TIM的更新標(biāo)志位
  TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
  //Reset counter
  TIM_SetCounter(TIM2,0);
  TIM_Cmd(TIM2, ENABLE);
}

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