关于stm32f334的正交编码

2019-07-14 17:09发布

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1楼-- · 2019-07-14 19:28

/* 配置定时器处于编码器模式 */
TIM_DeInit(TIM3);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);

TIM_TimeBaseStructure.TIM_Prescaler = 0x0;
TIM_TimeBaseStructure.TIM_Period = 65535 - 1;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

TIM_EncoderInterfaceConfig(TIM3, TIM_EncoderMode_TI1,TIM_ICPolarity_Falling, TIM_ICPolarity_Falling);
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_ICFilter = 15;
TIM_ICInit(TIM3, &TIM_ICInitStructure);

// 清除所有未决中断
TIM_ClearFlag(TIM3, TIM_FLAG_Update);
TIM_ITConfig(TIM3, TIM_IT_Update, DISABLE);

TIM3->SR = 0xfffe;
TIM_Cmd(TIM3, ENABLE);