00. 目录
文章目录
-
- [00. 目录](#00. 目录)
- [01. 预留](#01. 预留)
- [02. 编码器测速接线图](#02. 编码器测速接线图)
- [03. 编码器测速程序示例](#03. 编码器测速程序示例)
- [04. 程序下载](#04. 程序下载)
- [05. 附录](#05. 附录)
01. 预留
02. 编码器测速接线图
03. 编码器测速程序示例
Encoder.h
c
#ifndef __ENCODER_H
#define __ENCODER_H
void Encoder_Init(void);
int16_t Encoder_Get(void);
#endif
Encoder.c
c
#include "stm32f10x.h" // Device header
void Encoder_Init(void)
{
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInitStructure.TIM_Period = 65536 - 1; //ARR
TIM_TimeBaseInitStructure.TIM_Prescaler = 1 - 1; //PSC
TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseInitStructure);
TIM_ICInitTypeDef TIM_ICInitStructure;
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_Channel = TIM_Channel_1;
TIM_ICInitStructure.TIM_ICFilter = 0xF;
TIM_ICInit(TIM3, &TIM_ICInitStructure);
TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
TIM_ICInitStructure.TIM_ICFilter = 0xF;
TIM_ICInit(TIM3, &TIM_ICInitStructure);
TIM_EncoderInterfaceConfig(TIM3, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);
TIM_Cmd(TIM3, ENABLE);
}
int16_t Encoder_Get(void)
{
int16_t Temp;
Temp = TIM_GetCounter(TIM3);
TIM_SetCounter(TIM3, 0);
return Temp;
}
main.c
c
#include "stm32f10x.h" // Device header
#include "Delay.h"
#include "OLED.h"
#include "Timer.h"
#include "Encoder.h"
int16_t Speed;
int main(void)
{
OLED_Init();
Timer_Init();
Encoder_Init();
OLED_ShowString(1, 1, "Speed:");
while (1)
{
OLED_ShowSignedNum(1, 7, Speed, 5);
}
}
void TIM2_IRQHandler(void)
{
if (TIM_GetITStatus(TIM2, TIM_IT_Update) == SET)
{
Speed = Encoder_Get();
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
}
}