STM8定时器1编码器计数器读不到数据，第一次发帖，请大神帮

只看该作者 · 2014-2-12 16:48

--------------------------输入端口配置------------------------------------------
GPIO_Init_User(EN_CODER,  EN_A_PIN, GPIO_MODE_IN_FL_NO_IT);//ENCODER
GPIO_Init_User(EN_CODER,  EN_B_PIN, GPIO_MODE_IN_FL_NO_IT);//ENCODER
---------------------------定时器1配置-------------------------------------------
TIM1->SMCR |=  0x03;//同时在TI1和TI2边缘计数
TIM1->CCMR1 |=  0x01;//CC1通道被配置为输入，IC1映射在TI1FP1
TIM1->CCMR2 |=  0X01;//CC2通道被配置为输入，IC2映射在TI2FP2
TIM1->ARRH =  0xEA;
TIM1->ARRL =  0x60;
TIM1->CR1 =  0x01;//使能计数器
------------------------------读数--------------------------------------------------------
void VolumControl(void)
{
static vu16 LastCentValue;
vu16  NowCentValue;
vu16  Temp;
vu8 VolumValue;

NowCentValue = TIM1->CNTRH;
NowCentValue = NowCentValue<<8;
NowCentValue |= TIM1_CNTL;

if(NowCentValue>LastCentValue)
Temp=NowCentValue-LastCentValue;
else
Temp=LastCentValue-LastCentValue;//对编码器消抖动

if(Temp>10)
{
   VolumValue=NowCentValue/256;
}
else
EncoderStatus=STOP;
}
这是我用STM8S103F2P6的定时器1做的编码器接口配置，当我旋转编码器时，管脚有信号，
为什么计数器的值始终为零。

只看该作者 · 2014-2-12 17:39

你那个感觉差得远呢.

//tim2=103retim5:ch1234,pa0、1、2、3 remap:  pa15、pb3、10、11
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
//A0A1码盘，A3码盘0位置，A4电机0位置
GPIOX_Init(GPIOA,(GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3),GPIO_Mode_IPU);//Tim1C1~C4

    TIM_TimeBaseStructure.TIM_Prescaler = 0x0;  // No prescaling
    TIM_TimeBaseStructure.TIM_Period = 2000*2-1; //溢出设置
    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV4;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

    TIM_EncoderInterfaceConfig(TIM2, TIM_EncoderMode_TI1,TIM_ICPolarity_Falling, TIM_ICPolarity_Falling);
    TIM_ICStructInit(&TIM_ICInitStructure);
//TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_TRC;
    TIM_ICInitStructure.TIM_ICFilter = 0x08;
    TIM_ICInit(TIM2, &TIM_ICInitStructure);

/*ch3捕获上升沿
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_Channel = TIM_Channel_3;
    TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
    TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;//TIM_ICSelection_IndirectTI;//
    TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
    TIM_ICInitStructure.TIM_ICFilter = 0x00;
    TIM_ICInit(TIM2, &TIM_ICInitStructure); */
// Clear all pending interrupts
    TIM_ClearFlag(TIM2, TIM_FLAG_Update|TIM_IT_CC1|TIM_IT_CC2);
    TIM_ITConfig(TIM2, TIM_IT_CC1, ENABLE);    //TIM_IT_CC3|
    TIM2->CNT=2000;
    TIM_Cmd(TIM2, ENABLE);