之前用中断做过，现在做点东西，看到有编码器模式，想用用资源，但是配置好像有问题，大家有时间的帮我看看呗。以下是大体的初始化代码：
void Encoder_Init(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOA, &GPIO_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
TIM_DeInit(TIM3);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure); //先设置为缺省值
TIM_TimeBaseStructure.TIM_Prescaler = 0x00; // No prescaling
TIM_TimeBaseStructure.TIM_Period = (4*10)-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_Rising, TIM_ICPolarity_Rising); //设置TIM3编码界面
TIM_ICStructInit(&TIM_ICInitStructure);
//把其中的参数设置为缺省值
TIM_ICInitStructure.TIM_ICFilter = 6;
//选择比较滤波器
TIM_ICInit(TIM3, &TIM_ICInitStructure);
TIM_ClearFlag(TIM3, TIM_FLAG_Update);
TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE);
TIM3->CNT = 0;
TIM_Cmd(TIM3, ENABLE);
} |
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