STM32定时器正交编码器接口程序

1、/* */#include "encoder.h"void TIM3_Mode_Config(void)GPIO_InitTypeDef GPIO_InitStructure; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;TIM_ICInitTypeDef TIM_ICInitStructure;/*-*/RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); GPIO_StructInit(&GPIO_InitStructure); /* Configure PA.

2、06,07 as encoder input */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure);/*-*/ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); /使能TIM_DeInit(TIM3);TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStru

3、cture); TIM_TimeBaseStructure.TIM_Period =0xffff; / TIM_TimeBaseStructure.TIM_Prescaler =0; /设置预分频： TIM_TimeBaseStructure.TIM_ClockDivision =TIM_CKD_DIV1 ;/设置时钟分频系数：不分频 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; /向上计数模式 /TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Center

4、Aligned1; /*初始化TIM2定时器 */ TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);/*-*/编码配置 编码模式TIM_EncoderInterfaceConfig(TIM3, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising); /TIM_ICPolarity_Rising上升沿捕获 TIM_ICStructInit(&TIM_ICInitStructure); TIM_ICInitStructure.TIM_ICFilter =

5、6; /比较滤波器 TIM_ICInit(TIM3, &TIM_ICInitStructure); / Clear all pending interrupts TIM_ClearFlag(TIM3, TIM_FLAG_Update); TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE); /使能中断 /Reset counter TIM3->CNT =0;TIM_Cmd(TIM3, ENABLE); /使能定时器3void TIM_Init(void) TIM3_Mode_Config();encoder.h"#ifndef _ENCO

6、DER_H#define _ENCODER_H#include "stm32f10x.h"void TIM_Init(void);void TIM2_Mode_Config(void);void TIM3_Mode_Config(void);#endifMAIN.C#include "stm32f10x.h"#include "delay.h"#include "nvic.h"#include "encoder.h"#include "74HC595.h"volatile s16 encoder_num;int main(void) SystemInit();/ 72m时钟 SysTick_Init();TIM_Init();NVIC_Config();G