上代碼
#include "test.h"
/*TIM2初始化為編碼器介面*/
void Encoder_Init_TIM2(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//使能定時器4的時鐘
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);//使能PA埠時鐘
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1; //埠配置
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //浮空輸入
GPIO_Init(GPIOA, &GPIO_InitStructure); //根據設定引數初始化GPIOA
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Prescaler = 0x0; // 預分頻器
TIM_TimeBaseStructure.TIM_Period = 65535; //設定計數器自動重裝值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;//選擇時鐘分頻：不分頻
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//TIM向上計數
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_EncoderInterfaceConfig(TIM2, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);//使用編碼器模式3
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_ICFilter = 10;
TIM_ICInit(TIM2, &TIM_ICInitStructure);
TIM_ClearFlag(TIM2, TIM_FLAG_Update);//清除TIM的更新標志位
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
//Reset counter
TIM_SetCounter(TIM2,0);
TIM_Cmd(TIM2, ENABLE);
}
/*TIM4初始化為編碼器介面*/
void Encoder_Init_TIM4(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);//使能定時器4的時鐘
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);//使能PB埠時鐘
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7; //埠配置
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //浮空輸入
GPIO_Init(GPIOB, &GPIO_InitStructure); //根據設定引數初始化GPIOB
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Prescaler = 0x0; // 預分頻器
TIM_TimeBaseStructure.TIM_Period = 65535; //設定計數器自動重裝值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;//選擇時鐘分頻：不分頻
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//TIM向上計數
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
TIM_EncoderInterfaceConfig(TIM4, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);//使用編碼器模式3
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_ICFilter = 10;
TIM_ICInit(TIM4, &TIM_ICInitStructure);
TIM_ClearFlag(TIM4, TIM_FLAG_Update);//清除TIM的更新標志位
TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE);
//Reset counter
TIM_SetCounter(TIM4,0);
TIM_Cmd(TIM4, ENABLE);
}
/*單位時間編碼器計數 輸入定時器 輸出速度值*/
int Read_Encoder(u8 TIMX)
{
int Encoder_TIM;
switch(TIMX)
{
case 2: Encoder_TIM= (short)TIM2 -> CNT; TIM2 -> CNT=0;break;
case 3: Encoder_TIM= (short)TIM3 -> CNT; TIM3 -> CNT=0;break;
case 4: Encoder_TIM= (short)TIM4 -> CNT; TIM4 -> CNT=0;break;
default: Encoder_TIM=0;
}
return Encoder_TIM;
}
void TIM4_IRQHandler(void)
{
if(TIM4->SR&0X0001)//溢位中斷
{
}
TIM4->SR&=~(1<<0);//清除中斷標志位
}
void TIM2_IRQHandler(void)
{
if(TIM2->SR&0X0001)//溢位中斷
{
}
TIM2->SR&=~(1<<0);//清除中斷標志位
}
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標籤：單片機/工控