关于stm32单片机定时器1编码器模式的问题 -

标题: 关于stm32单片机定时器1编码器模式的问题 [打印本页]

作者: 1106495953 时间: 2023-10-13 11:58
标题: 关于stm32单片机定时器1编码器模式的问题
按照网上例程配置的编码器，但只在有计数，另一个方向计数一直为0，例程如下，求高人指点。

void TIM1_Initbm()
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);//
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE);//
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_FullRemap_TIM1, ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11|GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOE, &GPIO_InitStructure);

// TIM_OCInitTypeDef  TIM_OCInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

// RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);//
TIM_DeInit(TIM1);
TIM_TimeBaseStructure.TIM_Period = 0xffff; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值    80K
TIM_TimeBaseStructure.TIM_Prescaler =1-1; //设置用来作为TIMx时钟频率除数的预分频值  不分频
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位

TIM_TimeBaseStructure.TIM_RepetitionCounter = 0x0;

TIM_ARRPreloadConfig(TIM1, ENABLE); //使能TIMx在ARR上的预装载寄存器

TIM_EncoderInterfaceConfig(TIM1, TIM_EncoderMode_TI12, TIM_ICPolarity_Falling, TIM_ICPolarity_Falling);//使用编码器模式3
TIM_ICStructInit(&TIM_ICInitStructure);

// TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;

// TIM_ICInitStructure.TIM_Channel = TIM_Channel_1 | TIM_Channel_2;
TIM_ICInitStructure.TIM_ICFilter = 10;  //设置滤波器长度
TIM_ICInit(TIM1, &TIM_ICInitStructure);

TIM_SetCounter(TIM1,0);

NVIC_InitStructure.NVIC_IRQChannel=TIM1_UP_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x00;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x06;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE );
TIM_Cmd(TIM1, ENABLE);  //使能TIM1
}

void TIM1_UP_IRQHandler(void)
{
if (TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET)//检查指定的TIM中断发生与否:TIM 中断源
{
      TIM_ClearITPendingBit(TIM1, TIM_IT_Update);//清除TIMx的中断待处理位:TIM 中断源
      TIM_SetCounter(TIM1, 0);
}
}

int16_t Encoder_Get(void)
{
int16_t Temp;
Temp = TIM_GetCounter(TIM1); // 这里TIM_GetCounter返回一个uint16_t类型的值，利用补码很方便地将正数变为负数，例如65535变为-1
// if(Temp != 0){
TIM_SetCounter(TIM1, 0);
//  CARD_MSx5 =1;
// }
return Temp;
}

作者: 1106495953 时间: 2023-10-13 11:59
int main(void)
{
delay_init();            //延时函数初始化
smdGgpio_int_();
smdEgpio_int_();
smdFgpio_int_();
smdDgpio_int_();
smdCgpio_int_();
smdBgpio_int_();
smdAgpio_int_();
uart_init(9600);
// MYDMA_Config_TX(DMA1_Channel4,(u32)&USART1->DR,(u32)TXBuff,TX_MAX_LEN);
// USART_DMACmd(USART1,USART_DMAReq_Tx|USART_DMAReq_Rx,ENABLE);

// MYDMA_Config_RX(DMA1_Channel5,(u32)&USART1->DR,(u32)USART_RX_BUF,RX_MAX_LEN);
// MYDMA_Enable_RX(DMA1_Channel5);
LED_Init();
GD_Init();
KEY_Init();

// EXTIX_Init();
Adc_Init();
SMDA_VALUE.PWM_V =0;SMDB_VALUE.PWM_V =0;SMDC_VALUE.PWM_V =0;
SMDD_VALUE.PWM_V =0;SMDE_VALUE.PWM_V =0;SMDF_VALUE.PWM_V =0;SMDG_VALUE.PWM_V =0;

// SMDA_VALUE.PWM_CNT =50000;SMDB_VALUE.PWM_CNT =50000;SMDC_VALUE.PWM_CNT =50000;SMDD_VALUE.PWM_CNT =50000;
// SMDE_VALUE.PWM_CNT =50000;SMDF_VALUE.PWM_CNT =50000;SMDG_VALUE.PWM_CNT =50000;
// TIM3_Int_Init(10-1,72-1);
// TIM2_Int_Init(500-1,7200-1);
// TIM4_Int_Init(500-1,7200-1);
TIM1_Initbm();
// TIM1_Init(499,7200-1);
// star_clamp_rest();
// smd_AG_rest(1,1);

// SMD_Coturl(SMDD,STAR_SMDOE,OPEN_PWM,FORE_SMDDDIR,0);//D电机开始送牌
// SMD_Coturl(SMDC,STAR_SMDOE,OPEN_PWM,FORE_SMDCDIR,0);//C电机开始送牌
// get_rand();
// open_check();
printf("step:%d\r\n",ex);
   while(1)
{
ex =Encoder_Get();
printf("step:%d\r\n",ex);
LED1 =!LED1;
// Wait_StarCard();
// star_Card();
// send_Card();

delay_ms(5000);

}
}

作者: Hephaestus 时间: 2023-10-13 20:20
STM32的编码器模式太糙了，但凡有这类应用我都是直接换LPC17xx，里面的QEI太好用了。

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