【Follow me第二季第4期】任务汇总

alanlan86

【Follow me第二季第4期】任务汇总 [复制链接]

<i class="pstatus"> 本帖最后由 alanlan86 于 2024-12-8 21:14 编辑 </i>

# 开发板_Arduino Nano RP2040 Connect

![](https://docs.arduino.cc/static/3c91191c32fc80017d149d452a96bd8d/4ef49/hero.png)

本期的Follow Me活动的实验，大部分都可以参考官方的示例教程实现：
[Arduino Nano RP2040 Connect 官方的教程](https://docs.arduino.cc/tutorials/nano-rp2040-connect/rp2040-01-technical-reference/ "Arduino Nano RP2040 Connect 官方的教程")

# 硬件

关于Nano RP2040 Connect的原理图，可以通过如下链接获取：
[Nano RP2040的原理图](https://docs.arduino.cc/hardware/nano-rp2040-connect/ "Nano RP2040的原理图")

## RGB三色灯
- 板载RGB三色彩灯，分别链接了NINA-W102的LED R/G/B引脚上，RP2040通过I2C和SPI和NINA-W102进行连接和通信。
![](https://docs.arduino.cc/static/6932ba16fe0eb7d76fbb0af2c1616ff0/4ef49/RGB-PIXEL-NANORP2040CONNECT.png)

## IMU 6轴Motion Sensor
- 本次任务二用到板载的ST 6轴传感器 LSM6DSOXTR，它内置IMU计算单元、3轴的陀螺仪、3轴加速度以及测温传感器（用于温度补偿等）。
![](https://docs.arduino.cc/static/a0cb50e4046033167386ef8405d4f090/4ef49/rp2040-imu-basics-img-02.png)

## 麦克风
- 板载一颗MP34DT05数字麦克风，通过PDM接口和RP2040进行链接。

![](https://docs.arduino.cc/static/eae5c08b5122f75040a019f056f1da41/4ef49/MP34DT06JTR-NANORP2040CONNECT.png)

# 软件

## 任务一 搭建环境
- 要求：搭建环境并开启第一步Blink三色LED / 串口打印Hello DigiKey & EEWorld！；
## 步骤
- （1）从https://www.arduino.cc/ 官网下载Arduino的IDE安装包，一路进行Next下一步即可完整安装完成整个开发环境。

- （2）软件库的更新部分，最好有科学上网支持，否则拉取某些库会比较慢。
- （3）更新一下NINA的固件。

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- （4）编译运行第一个程序，upload成功就可以看到点灯blinky效果了。

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## 源代码
- 将第一个任务的Blinky点灯以及第二个任务IMU读取sensor数据整合在一起。

```cpp
#include "WiFiNINA.h"
#include <Arduino_LSM6DSOX.h>

float Ax, Ay, Az;
float Gx, Gy, Gz;

uint32_t cycle = 0;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Arduino Nano RP2040 Connect Startup...");
  Serial.println("Hello Digikey&EEWorld!");

while(!Serial);

if (!IMU.begin()) {
    Serial.println("Failed to initialize IMU!");
    while (1);
  }

Serial.print("Accelerometer sample rate = ");
  Serial.print(IMU.accelerationSampleRate());
  Serial.println("Hz");
  Serial.println();

Serial.print("Gyroscope sample rate = ");  
  Serial.print(IMU.gyroscopeSampleRate());
  Serial.println("Hz");
  Serial.println();

pinMode(LEDR, OUTPUT);
  pinMode(LEDG, OUTPUT);
  pinMode(LEDB, OUTPUT);
}

void loop() {
  char message[32];

// put your main code here, to run repeatedly:
  snprintf(message, sizeof(message), "cycle=%d, run...", cycle++);
  Serial.println(message);

if (IMU.accelerationAvailable()) {
    IMU.readAcceleration(Ax, Ay, Az);

Serial.println("Accelerometer data: ");
    Serial.print(Ax);
    Serial.print('\t');
    Serial.print(Ay);
    Serial.print('\t');
    Serial.println(Az);
    Serial.println();
  }

if (IMU.gyroscopeAvailable()) {
    IMU.readGyroscope(Gx, Gy, Gz);
    
    Serial.println("Gyroscope data: ");
    Serial.print(Gx);
    Serial.print('\t');
    Serial.print(Gy);
    Serial.print('\t');
    Serial.println(Gz);
    Serial.println();
  }

digitalWrite(LEDR, HIGH);
  digitalWrite(LEDG, HIGH);
  digitalWrite(LEDB, HIGH);

delay(1000);

digitalWrite(LEDR, LOW);
  digitalWrite(LEDG, LOW);
  digitalWrite(LEDB, LOW);

delay(1000);
}

```

## 任务二 IMU传感器
- 要求：学习IMU基础知识，调试IMU传感器，通过串口打印六轴原始数据；
### 源代码
- 整合#include <Arduino_LSM6DSOX.h> LSM6DS的库，然后在setup调用初始化传感器，并将加速度和陀螺仪的sample rate打印出来。
```cpp
  if (!IMU.begin()) {
    Serial.println("Failed to initialize IMU!");
    while (1);
  }
  
  Serial.print("Accelerometer sample rate = ");
  Serial.print(IMU.accelerationSampleRate());
  Serial.println("Hz");
  Serial.println();

Serial.print("Gyroscope sample rate = ");  
  Serial.print(IMU.gyroscopeSampleRate());
  Serial.println("Hz");
  Serial.println();
```
- 在loop循环部分读取sensor的6轴数据值。

```cpp
if (IMU.accelerationAvailable()) {
    IMU.readAcceleration(Ax, Ay, Az);

Serial.println("Accelerometer data: ");
    Serial.print(Ax);
    Serial.print('\t');
    Serial.print(Ay);
    Serial.print('\t');
    Serial.println(Az);
    Serial.println();
  }

if (IMU.gyroscopeAvailable()) {
    IMU.readGyroscope(Gx, Gy, Gz);
    
    Serial.println("Gyroscope data: ");
    Serial.print(Gx);
    Serial.print('\t');
    Serial.print(Gy);
    Serial.print('\t');
    Serial.println(Gz);
    Serial.println();
  }
```
### 测试
- upload代码后，可以通过Serial Monitor观察到Sensor的数值。

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## 任务三 麦克风
- 要求：学习PDM麦克风技术知识，调试PDM麦克风，通过串口打印收音数据和音频波形。

### 源代码
```cpp
/*
  This example reads audio data from the on-board PDM microphones, and prints
  out the samples to the Serial console. The Serial Plotter built into the
  Arduino IDE can be used to plot the audio data (Tools -> Serial Plotter)

Circuit:
  - Arduino Nano 33 BLE board, or
  - Arduino Nano RP2040 Connect, or
  - Arduino Portenta H7 board plus Portenta Vision Shield, or
  - Arduino Nicla Vision

This example code is in the public domain.
*/

#include <PDM.h>

// default number of output channels
static const char channels = 1;

// default PCM output frequency
static const int frequency = 16000;

// Buffer to read samples into, each sample is 16-bits
short sampleBuffer[512];

// Number of audio samples read
volatile int samplesRead;

void setup() {
  Serial.begin(9600);
  while (!Serial);

// Configure the data receive callback
  PDM.onReceive(onPDMdata);

// Optionally set the gain
  // Defaults to 20 on the BLE Sense and 24 on the Portenta Vision Shield
  // PDM.setGain(30);

// Initialize PDM with:
  // - one channel (mono mode)
  // - a 16 kHz sample rate for the Arduino Nano 33 BLE Sense
  // - a 32 kHz or 64 kHz sample rate for the Arduino Portenta Vision Shield
  if (!PDM.begin(channels, frequency)) {
    Serial.println("Failed to start PDM!");
    while (1);
  }
}

void loop() {
  // Wait for samples to be read
  if (samplesRead) {

// Print samples to the serial monitor or plotter
    for (int i = 0; i < samplesRead; i++) {
      if(channels == 2) {
        Serial.print("L:");
        Serial.print(sampleBuffer<i>);
        Serial.print(" R:");
        i++;
      }
      Serial.println(sampleBuffer<i>);
    }

// Clear the read count
    samplesRead = 0;
  }
}

/**
 * Callback function to process the data from the PDM microphone.
 * NOTE: This callback is executed as part of an ISR.
 * Therefore using `Serial` to print messages inside this function isn't supported.
 * */
void onPDMdata() {
  // Query the number of available bytes
  int bytesAvailable = PDM.available();

// Read into the sample buffer
  PDM.read(sampleBuffer, bytesAvailable);

// 16-bit, 2 bytes per sample
  samplesRead = bytesAvailable / 2;
}

```

## 测试
- 下载固件可以通过Serial Monitor可看到麦克风的数值，且可以绘制出曲线。

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# 演示
## 任务一和二的视频
<div id="player_0179e9700e228002860ffa565ff3d7af0" class="localvideo-box"></div><div class="localvideo-title">24Q4-1</div><br/>

## 任务三的视频
<div id="player_aec56701d586177dc3456b74027084a11" class="localvideo-box"></div><div class="localvideo-title">24Q4-2</div><br/>