【STM32】STM32学习笔记-编码器接口测速(20)-编程知识

【STM32】STM32学习笔记-编码器接口测速(20)

00. 目录

文章目录

- 00. 目录
- 01. 预留
- 02. 编码器测速接线图
- 03. 编码器测速程序示例
- 04. 程序下载
- 05. 附录

01. 预留

02. 编码器测速接线图

在这里插入图片描述

03. 编码器测速程序示例

Encoder.h

#ifndef __ENCODER_H
#define __ENCODER_Hvoid Encoder_Init(void);
int16_t Encoder_Get(void);#endif

Encoder.c

#include "stm32f10x.h"                  // Device headervoid 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;		//ARRTIM_TimeBaseInitStructure.TIM_Prescaler = 1 - 1;		//PSCTIM_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

#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);}
}