STM32F407ZG TIM5编码器模式求助

漫天飞血 · 发表于 2016-8-31 19:57:49

参照着TIM3改的程序（且TIM3是正常工作的），但是改出的TIM5不正常，以下是修改的程序，麻烦大家帮我看看哪里不对了。

int main(void)
{
u32 oldcnt5;
uart_init(115200);
delay_init(84);
Encoder_Init();
      while(1)
{
delay_ms(10000);
            if(oldcnt5!=TIM5->CNT)
   {
   oldcnt5=TIM5->CNT;
   printf("encoder5:%d\r\n",oldcnt5);
                     TIM5->CNT=0;
   printf("\r\n");
      }
   }
}

void Encoder_Init(void)
{
      GPIO_InitTypeDef       GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_ICInitTypeDef       TIM_ICInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5,ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE);

GPIO_PinAFConfig(GPIOA,GPIO_PinSource0,GPIO_AF_TIM5);
GPIO_PinAFConfig(GPIOA,GPIO_PinSource1,GPIO_AF_TIM5);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1;
      GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
      GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
      GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP ;
GPIO_Init(GPIOA,&GPIO_InitStructure);

      TIM_TimeBaseStructure.TIM_Period = 60000;
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure);

TIM_EncoderInterfaceConfig(TIM5, TIM_EncoderMode_TI12,TIM_ICPolarity_Rising,TIM_ICPolarity_Rising);
TIM_ICStructInit(&TIM_ICInitStructure);
      TIM_ICInitStructure.TIM_ICFilter = 6;
      TIM_ICInit(TIM5, &TIM_ICInitStructure);
      TIM_ClearFlag(TIM5, TIM_FLAG_Update);
      TIM_ITConfig(TIM5, TIM_IT_Update, ENABLE);
      TIM5->CNT = 0;
TIM_Cmd(TIM5, ENABLE);
}

漫天飞血 · 发表于 2016-8-31 19:57:50

正确程序应该是这样的：
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;
TIM_ICInitTypeDef       TIM_ICInitStructure;
// ENC2 init
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

//GPIO_StructInit(&GPIO_InitStructure);
/* Configure PA.06,07 as encoder input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_PinAFConfig(GPIOA,GPIO_PinSource0,GPIO_AF_TIM5);
GPIO_PinAFConfig(GPIOA,GPIO_PinSource1,GPIO_AF_TIM5);

/* Enable the TIM3 Update Interrupt */
//  NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
//  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
//  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
//  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
//  NVIC_Init(&NVIC_InitStructure);

/* Timer configuration in Encoder mode */
//TIM_DeInit(TIM3);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);

TIM_TimeBaseStructure.TIM_Prescaler = 0x0; // No prescaling
TIM_TimeBaseStructure.TIM_Period = 60000;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure);

TIM_EncoderInterfaceConfig(TIM5, TIM_EncoderMode_TI1, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_ICFilter = 0;
TIM_ICInit(TIM5, &TIM_ICInitStructure);

// Clear all pending interrupts
TIM_ClearFlag(TIM5, TIM_FLAG_Update);
TIM_ITConfig(TIM5, TIM_IT_Update, ENABLE);

TIM_Cmd(TIM5, ENABLE);