# rttsummer

**Repository Path**: linshire/rtt-summer-camp-study

## Basic Information

- **Project Name**: rttsummer
- **Description**: leraning for rtthread summer.
- **Primary Language**: C
- **License**: AGPL-3.0
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 1
- **Forks**: 0
- **Created**: 2022-07-18
- **Last Updated**: 2024-11-20

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# rttsummer

#### 介绍
一个简单的基于MPU6050的计步小项目

#### 作品背景





#### 实现功能

从MPU6050获取xyz三轴的加速度，经过一系列的滤波，计算出行走步数，并通过esp8266上传使用usp协议传至局域网内的其他设备；

#### 整体系统框架

![](README.assets/%E8%AE%A1%E6%AD%A5DEMO.png)

#### RT-Thread使用情况概述





#### 硬件框架

![](README.assets/%E7%A1%AC%E4%BB%B6%E6%A1%86%E6%9E%B6-16595148968265-16596834987674.png)



#### 软件模块说明

##### mpu6050初始化

```c
user_device_init = rt_device_find(MPU6050_I2C_BUS_NAME);

if(user_device_init != RT_NULL)
{
    error = rt_device_open(user_device_init, RT_DEVICE_OFLAG_RDWR | RT_DEVICE_FLAG_INT_RX | \
                    RT_DEVICE_FLAG_STREAM);

    if(error == RT_EOK)
        MPU6050 = mpu6xxx_init(MPU6050_I2C_BUS_NAME, RT_NULL);
    else
        rt_kprintf("errorr: %d\n",error);
    
```



step_count线程主要程序

```
//阻塞线程定时执行
rt_sem_take(timeout,1000);
//获取三周加速度数据
error = mpu6xxx_get_accel(MPU6050, &databuffera);
//数据更新
sample.x= databuffera.x;
sample.y= databuffera.y;
sample.z= databuffera.z;
//极值更新
peak_update(&peak,&sample);
//滑动滤波
slid_update(&slid,&sample);
//不乏判断并计步
Num += detect_step(&peak,&slid);

rt_kprintf("%d,%d,%d\n",sample.x,sample.y,sample.z);
rt_kprintf("%d\n",Num);
```

计步判断算法



    static int detect_step(peak_value_t *peak,slid_reg_t *slid)
    {
          //char flag=0;
        	int step_cnt = 0;
        	//判断最活跃轴
            char res=is_most_active(peak);
            
     switch (res)
     {
      case MOST_ACTIVE_NULL:
          break;
    
      case MOST_ACTIVE_X:
    
        short threshold_x=(peak->oldmax.x+peak->oldmin.x)/2;
        if(slid->old_sample.x>threshold_x&&slid->new_sample.x<threshold_x)
        {
          //flag=1;
            step_cnt++;
        }
        break;
    
      case MOST_ACTIVE_Y:
    
          short threshold_y=(peak->oldmax.y+peak->oldmin.y)/2;
           if(slid->old_sample.y>threshold_y&&slid->new_sample.y<threshold_y)
           {
             //flag=1;
              step_cnt++;
           }
           break;
    
      case MOST_ACTIVE_Z:
          short threshold_z=(peak->oldmax.z+peak->oldmin.y)/2;
           if(slid->old_sample.z>threshold_z&&slid->new_sample.z<threshold_z)
           {
             //flag=1;
              step_cnt++;
           }
           break;
    
      default:
        break;
      }
      return step_cnt;
      }




#### 作品完整图片

 ![image-20220803185808721](ima/README.assets/image-20220803185808721.png)![](README.assets/image-20220803185810420.png







#### 上位机收到的数据

![image-20220803190539076](ima/README.assets/image-20220803190539076.png)

其中19代表行走步数，三个值代表xyz轴上的加速度