F0 编码器问题

Moy · 发表于 2016-10-26 16:33:11

用F042一个芯片写的一个编码器脉冲计数程序，两相的。但是是始终读不到数据，这是为什么？请大神指点！！！！！！！！！！！！！
串口已经测试了，是可以用的，

int main(void)
{
  SysTickConfig();

  TIM2_ENC_Mode_Config();

  USART1_Configuration(); //* USART1 config 115200 8-N-1

while(1)
{
//Encoder_real = M1_EcoderPos + TIM2->CNT;

USART_SendData(USART1, TIM2->CNT%1000/100);
while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

USART_SendData(USART1, TIM2->CNT%100/10);
while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

USART_SendData(USART1, TIM2->CNT%10);
while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
  }
}

void TIM2_ENC_Mode_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

//PA0 ch1
//PA1 ch2
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);

GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);

// NVIC_Config(2);
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

TIM_DeInit(TIM2);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Period = 65535;
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision =TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

TIM_EncoderInterfaceConfig(TIM2, TIM_EncoderMode_TI12, TIM_ICPolarity_BothEdge ,TIM_ICPolarity_BothEdge);
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_ICFilter = 6;
TIM_ICInit(TIM2, &TIM_ICInitStructure);

// TIM_ARRPreloadConfig(TIM4, ENABLE);
TIM_ClearFlag(TIM2, TIM_FLAG_Update);
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
//Reset counter
TIM2->CNT = 0;//

TIM_Cmd(TIM2, ENABLE);
}

signed int M1_EcoderPos=0,Encoder_real=0;
void TIM2_IRQHandler(void)
{
if(TIM2->SR&0x0001)
{
      if(TIM2->CNT<32768)
      {
         M1_EcoderPos +=65536;
      }
      else
      {
         M1_EcoderPos -=65536;
      }
}
TIM2->SR&=~(1<<0);
}

Moy · 发表于 2016-10-26 16:33:12

解决了！
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
这句话的问题，输入方式应该是GPIO_Mode_AF

Moy · 发表于 2016-10-26 16:34:27

加了上拉电阻，也不可以！我怀疑还是程序的问题，请大神指点

Moy · 发表于 2016-10-26 16:59:51

？？？

正点原子 · 发表于 2016-10-27 21:38:33

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hejg061228 · 发表于 2016-10-28 14:41:19

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F0 编码器问题

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