---PC6接A相 PC7接B相
---目前遇到的问题是，无论编码器正转还是反转，计数值都是从65535向下计数！！！
下面是配置代码，（RCC使能已开）
// TIM8 Encoder PC6 AND PC7
TIM_TimeBaseStructInit(&TIM_TimeBaseInitStructure);
TIM_TimeBaseInitStructure.TIM_Period = 0xFFFF;
TIM_TimeBaseInitStructure.TIM_Prescaler = 1;
TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0x00;
TIM_TimeBaseInit(TIM8, &TIM_TimeBaseInitStructure);
TIM_EncoderInterfaceConfig(TIM8, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_Channel = TIM_Channel_1 | TIM_Channel_2;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 0; // 滤波
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM_ICInit(TIM8, &TIM_ICInitStructure);
/*
TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 0; // 滤波
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM_ICInit(TIM8, &TIM_ICInitStructure);
*/
TIM_ClearFlag(TIM8, TIM_FLAG_Update); //清除TIM更新标志位
TIM_ITConfig(TIM8, TIM_IT_Update, ENABLE); //使能开启TIM中断
TIM_SetCounter(TIM8, 0);
TIM_Cmd(TIM8, ENABLE);
使用的编码器如下：
