RE:stm32f207编码器接口模式 计数器不计数【悬赏问答】
void Encoder_Configuration(void){
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
#ifdefVECT_TAB_RAM //如果C/C++ Compiler\Preprocessor\Defined symbols中的定义了VECT_TAB_RAM（见程序库更改内容的表格）
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0); //则在RAM调试
#else //如果没有定义VECT_TAB_RAM
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);//则在Flash里调试
#endif
//Enable the TIM5 gloabal Interrupt
NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//PA0 A相 PA1 B相
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA , ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd=GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA,&GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA,GPIO_PinSource0,GPIO_AF_TIM5);
GPIO_PinAFConfig(GPIOA,GPIO_PinSource1,GPIO_AF_TIM5);
//Timer configuration in Encoder mode
TIM_DeInit(TIM5);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5 , ENABLE); //30MHz
TIM_TimeBaseStructure.TIM_Prescaler = 0; // 未分频
TIM_TimeBaseStructure.TIM_Period = 0xfffffff;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure);
TIM_EncoderInterfaceConfig(TIM5, TIM_EncoderMode_TI12,
TIM_ICPolarity_BothEdge ,TIM_ICPolarity_BothEdge);
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_Channel=TIM_Channel_1;
TIM_ICInitStructure.TIM_ICPolarity= TIM_ICPolarity_Rising;
TIM_ICInitStructure.TIM_ICSelection=TIM_ICSelection_DirectTI;
TIM_ICInitStructure.TIM_ICFilter = 0;//ICx_FILTER;
TIM_ICInitStructure.TIM_ICPrescaler=TIM_ICPSC_DIV1;
TIM_ICInit(TIM5, &TIM_ICInitStructure);
TIM_ICInitStructure.TIM_Channel=TIM_Channel_2;
TIM_ICInitStructure.TIM_ICPolarity= TIM_ICPolarity_Rising;
TIM_ICInitStructure.TIM_ICSelection=TIM_ICSelection_DirectTI;
TIM_ICInitStructure.TIM_ICFilter = 0;//ICx_FILTER;
TIM_ICInitStructure.TIM_ICPrescaler=TIM_ICPSC_DIV1;
TIM_ICInit(TIM5, &TIM_ICInitStructure);
//Clear all pending interrupts
TIM_ClearFlag(TIM5, TIM_FLAG_Update);
TIM_ITConfig(TIM5, TIM_IT_Update, ENABLE);// 不中断
//Reset counter设定初始值
TIM_SetCounter(TIM5, 0x7fffffff);
TIM_Cmd(TIM5, ENABLE);
}
回复:stm32f207编码器接口模式 计数器不计数【悬赏问答】
楼主，我也是在调试编码器采集 我用的是STM32F051的 弄了好几天了 没有采集到信号，为什么TIM_CNT不自动计数呢 楼主可以发你的完整的程序吗，我也在做，但是也记不了数，编码器手动转动都没有输出，拜托了，410459824@qq.com 正交编码器是有90°相位差的，没有相位差使用STM32的编码器接口是不会计数的，使用编码器接口对编码器脉冲计数只需要一个带编码器接口的定时器足以，预分频值设为0，若开启的计数倍频，定时器重装值应该为编码器线数*倍频，然后呢可以开启一个高速中断的定时器不断的读TIM->CNT，这样可以区别每一度的变化！我的编码器程序就是4倍频+定时器的编码器接口GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDefTIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
//PB6 ch1A,PB7 ch2
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);//使能TIM3时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);//使能GPIOA时钟
GPIO_StructInit(&GPIO_InitStructure);//将GPIO_InitStruct中的参数按缺省值输入
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//PA6 PA7浮空输入
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
NVIC_Config(4);
TIM_DeInit(TIM4);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Period = 360*4;//设定计数器重装值
TIM_TimeBaseStructure.TIM_Prescaler = 0; //TIM3时钟预分频值
TIM_TimeBaseStructure.TIM_ClockDivision =TIM_CKD_DIV1 ;//设置时钟分割 T_dts = T_ck_int
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上计数
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
TIM_EncoderInterfaceConfig(TIM4, TIM_EncoderMode_TI12, TIM_ICPolarity_BothEdge ,TIM_ICPolarity_BothEdge);//使用编码器模式3，上升下降都计数
TIM_ICStructInit(&TIM_ICInitStructure);//将结构体中的内容缺省输入
TIM_ICInitStructure.TIM_ICFilter = 6;//选择输入比较滤波器
TIM_ICInit(TIM4, &TIM_ICInitStructure);//将TIM_ICInitStructure中的指定参数初始化TIM3
// TIM_ARRPreloadConfig(TIM4, ENABLE);//使能预装载
TIM_ClearFlag(TIM4, TIM_FLAG_Update);//清除TIM3的更新标志位
TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE);//运行更新中断
//Reset counter
TIM4->CNT = 0;//
TIM_Cmd(TIM4, ENABLE); //启动TIM4定时器
}
页:
1
[2]