【Follow me第二季第4期】任务汇总

mingzhe123 发表于 2025-1-12 12:10

本帖最后由 mingzhe123 于 2025-1-21 18:11 编辑

物料清单：

任务使用物料：

<ul>
<li>主板1：<a href="https://www.digikey.cn/zh/products/detail/arduino/ABX00052/14123941" target="_blank">ABX00052 Arduino | 开发板，套件，编程器 | DigiKey</a>   </li>
<li>主板2：<a href="https://www.digikey.cn/zh/products/detail/raspberry-pi/SC1631/24627136" target="_blank">RASPBERRY PI PICO 2 RP2350</a></li>
<li></li>
</ul>

任务一：

        基础实现：搭建环境并开启第一步Blink三色LED / 串口打印Hello DigiKey & EEWorld！链接：<a href="https://bbs.eeworld.com.cn/thread-1300565-1-1.html" target="_blank">任务一链接</a>

基础代码：      

<pre>
<code class="language-cpp">#include <WiFiNINA.h>
//#include <Arduino.h>

void setup() {

Serial.begin(115200);

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

digitalWrite(LEDB,LOW);
digitalWrite(LEDR,LOW);
digitalWrite(LEDG,LOW);
Serial.println("The task began!!!");
Serial.println();
}

void loop() {

delay(2000);
digitalWrite(LEDB, HIGH);
digitalWrite(LEDG, LOW);
Serial.println("Hello DigiKey & EEWorld!");
delay(2000);
digitalWrite(LEDB, LOW);//状态翻转
digitalWrite(LEDG, HIGH);

}

</code></pre>

进阶代码：

  任务一进阶适用PICO2开发板与Arduino Nano RP2040 Connect，其主要原理是PICO2的按键通过串口控制Arduino Nano RP2040 Connect开发板上的RGB 灯，其系统架构图如下图所示：

<div></div>

 

  

其主要代码如下：

PICO2代码：

<pre>
<code class="language-cpp">int val;
const int BUTTON_PIN = 21; // the number of the pushbutton pin
const int SHORT_PRESS_TIME = 500; // 500 milliseconds
// Variables will change:
int lastState = LOW;// the previous state from the input pin
int currentState; // the current reading from the input pin
unsigned long pressedTime= 0;
unsigned long releasedTime = 0;
char key_flag = 0;

void setup() {

Serial1.setRX(17);
Serial1.setTX(16);
Serial1.begin(115200); // opensserial port, sets data rate to 9600 bps
while(Serial.read()>= 0){}//clear serialbuffer
pinMode(25,OUTPUT);
pinMode(BUTTON_PIN, INPUT_PULLUP);
Serial1.write(49);

}

void Key(void) {

delay(1);
}

void loop() {

delay(10);

// read the state of the switch/button:
currentState = digitalRead(BUTTON_PIN);

if(lastState == HIGH && currentState == LOW) // button is pressed
pressedTime = millis();
else if(lastState == LOW && currentState == HIGH) { // button is released
releasedTime = millis();
long pressDuration = releasedTime - pressedTime;

if( pressDuration < SHORT_PRESS_TIME )
 Serial.println("A short press is detected");
 key_flag = !key_flag;
 if(key_flag) {
 Serial1.write(49);
 Serial.println("49");
 digitalWrite(25,LOW);
 } else {
 Serial1.write(50);
 Serial.println("50");
 digitalWrite(25,HIGH);
 }


}

// save the the last state
lastState = currentState;

}
</code></pre>

Arduino Nano RP2040 Connect代码：

<pre>
<code class="language-cpp">#include <WiFiNINA.h>

int val;
void setup() {
Serial.begin(115200); // opensserial port, sets data rate to 9600 bps

Serial1.begin(115200); // opensserial port, sets data rate to 9600 bps
while(Serial1.read()>= 0){}//clear serialbuffer
while(Serial.read()>= 0){}//clear serialbuffer

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

digitalWrite(LEDB,LOW);
digitalWrite(LEDR,LOW);
digitalWrite(LEDG,LOW);
Serial.println("The pro task began!!!");
Serial.println();
}

void loop() {
if (Serial1.available() > 0) {
delay(100); // 等待数据传完
int numdata = Serial1.available();
val=Serial1.read();
Serial1.println(val);
if(val==49)
{
 Serial.println("Test OK");
 Serial.println(val);

// delay(2000);
 digitalWrite(LEDB, HIGH);
 Serial.println("Hello DigiKey & EEWorld!");
 digitalWrite(LEDG, HIGH);
}
if(val==50)
{
 Serial.println("Test OK!!!");
 Serial.println(val);

// delay(2000);
 digitalWrite(LEDB, LOW);
 Serial.println("Turn off the lights!");
 digitalWrite(LEDG, LOW);
}
while(Serial1.read()>=0){} //清空串口缓存
}
}
</code></pre>

总结：

 树莓派的MCU，通过arduino来开发难度降低了很多，用户只需要调动封装好的库函数即可。但是有一点要吐槽一下，本来是个及其简单的程序，适用arduino IDE开发却需要很长的编译时间，实在不敢恭维，后期有时间尝试一下VS Code。

任务视频：

a630efe2d622147a2861f70ce74fddcd 
 

 

任务二： 
学习IMU基础知识，调试IMU传感器，通过串口打印输出。链接：<a href="https://bbs.eeworld.com.cn/thread-1300577-1-1.html" target="_blank">任务二链接</a>

  

IMU编程与调试

<a href="https://www.digikey.cn/zh/products/detail/arduino/ABX00052/14123941" target="_blank">Arduino® Nano RP2040 Connect</a>代码：

<pre>
<code class="language-cpp">
/* WIRING
In order to use the Adafruit lsm6dsox sensor with a ST nucleo board,
plug Nucleo "+3.3V" to AdafruitLSM6DOX "VIN",
plug Nucleo "GND" to AdafruitLSM6DOX "GND",
plug Nucleo "SCL"(D15) to AdafruitLSM6DOX "SCL",
plug Nucleo "SDA"(D14) to AdafruitLSM6DOX "SDA".*/

#include "LSM6DSOXSensor.h"
#include <Arduino.h>
// Declare LSM6DSOX sensor. Sensor address can have 2 values LSM6DSOX_I2C_ADD_L (corresponds to 0x6A I2C address) or LSM6DSOX_I2C_ADD_H (corresponds to 0x6B I2C address)
// On Adafruit lsm6dsox sensor, LSM6DSOX_I2C_ADD_L is the default address
LSM6DSOXSensor lsm6dsoxSensor = LSM6DSOXSensor(&Wire, LSM6DSOX_I2C_ADD_L);

int flag;
longlast_update_time;

// Timer variables
unsigned long lastTime = 0;
unsigned long timerDelay = 1000;

void setup() {
Serial.begin(115200);

Serial1.begin(115200); // opensserial port, sets data rate to 115200 bps
while(Serial1.read()>= 0){}//clear serialbuffer

pinMode(LED_BUILTIN,OUTPUT);

digitalWrite(LED_BUILTIN,LOW);

Wire.begin();

// Default clock is 100kHz. LSM6DSOX also supports 400kHz, let's use it
Wire.setClock(400000);

// Init the sensor
lsm6dsoxSensor.begin();

// Enable accelerometer and gyroscope, and check success
if (lsm6dsoxSensor.Enable_X() == LSM6DSOX_OK && lsm6dsoxSensor.Enable_G() == LSM6DSOX_OK) {
Serial.println("Success enabling accelero and gyro");
} else {
Serial.println("Error enabling accelero and gyro");
}

// Read ID of device and check that it is correct
uint8_t id;
lsm6dsoxSensor.ReadID(&id);
if (id != LSM6DSOX_ID) {
Serial.println("Wrong ID for LSM6DSOX sensor. Check that device is plugged");
} else {
Serial.println("Receviced correct ID for LSM6DSOX sensor");
}

// Set accelerometer scale at +- 2G. Available values are +- 2, 4, 8, 16 G
lsm6dsoxSensor.Set_X_FS(2);

// Set gyroscope scale at +- 125 degres per second. Available values are +- 125, 250, 500, 1000, 2000 dps
lsm6dsoxSensor.Set_G_FS(125);

// Set Accelerometer sample rate to 208 Hz. Available values are +- 12.0, 26.0, 52.0, 104.0, 208.0, 416.0, 833.0, 1667.0, 3333.0, 6667.0 Hz
lsm6dsoxSensor.Set_X_ODR(208.0f);

// Set Gyroscope sample rate to 208 Hz. Available values are +- 12.0, 26.0, 52.0, 104.0, 208.0, 416.0, 833.0, 1667.0, 3333.0, 6667.0 Hz
lsm6dsoxSensor.Set_G_ODR(208.0f);

}

void IMU_update(int interval)
{
// Read accelerometer
uint8_t acceleroStatus;
lsm6dsoxSensor.Get_X_DRDY_Status(&acceleroStatus);
if (acceleroStatus == 1) { // Status == 1 means a new data is available
int32_t acceleration;
lsm6dsoxSensor.Get_X_Axes(acceleration);
// Plot data for each axis in mg
Serial.print("AccelerationX=");

Serial.print(acceleration);

Serial.print("mg, AccelerationY=");

Serial.print(acceleration);

Serial.print("mg, AccelerationZ=");

Serial.print(acceleration);
Serial.println("mg");

if (millis() - last_update_time > interval)
 {
 if (acceleration > 1000)
 {
//encoder_diff--;
flag = 1;
 Serial.print("flag=1");
 Serial1.write(49);
 digitalWrite(LED_BUILTIN,LOW);
 }
else if (acceleration < -1000)
{
// encoder_diff++;
flag = 2;
 Serial.print("flag=2");
 Serial1.write(50);
 digitalWrite(LED_BUILTIN,HIGH);
}
else
{
flag = 0;
}

last_update_time = millis();
 }
}

// Read gyroscope
uint8_t gyroStatus;
lsm6dsoxSensor.Get_G_DRDY_Status(&gyroStatus);
if (gyroStatus == 1) { // Status == 1 means a new data is available
int32_t rotation;
lsm6dsoxSensor.Get_G_Axes(rotation);
// Plot data for each axis in milli degrees per second
Serial.print("RotationX=");

Serial.print(rotation);

Serial.print("mdps, RotationY=");

Serial.print(rotation);

Serial.print("mdps, RotationZ=");

Serial.print(rotation);
Serial.println("mdps");
}

}

void loop() {

IMU_update(200);

}
</code></pre>

PICO2端代码：

<pre>
<code class="language-cpp">int val;

void setup() {

Serial1.setRX(17);

Serial1.setTX(16);

Serial1.begin(115200); // opensserial port, sets data rate to 9600 bps

while(Serial.read()>= 0){}//clear serialbuffer

pinMode(25,OUTPUT);

}

void loop() {

if (Serial1.available() > 0) {

delay(100); // 等待数据传完

int numdata = Serial1.available();

val=Serial1.read();

Serial1.println(val);

if(val==49)

{

 Serial.println("Test OK");

 Serial.println(val);

// delay(2000);

 digitalWrite(25, LOW);

}

if(val==50)

{

 Serial.println("Test OK!!!");

 Serial.println(val);

 digitalWrite(25, HIGH);

}

while(Serial1.read()>=0){} //清空串口缓存

}

}
</code></pre>

<img src="https://bbs.eeworld.com.cn/data/attachment/forum/202412/01/121103ocucc7gukkzjdq7k.png.thumb.jpg" />

总结：

 实现IMU的控制与数据读取还是十分简单的，只需调用官方Arduino库即可，这大大降低了开发者的开发难度。

任务视频：

a51009e6090e2b27a92609dbf549ae37

 

任务三： 
学习并调试PDM麦克风，通过串口打印收音数据和音频 。链接：<a href="https://bbs.eeworld.com.cn/thread-1301147-1-1.html" target="_blank">任务三链接</a> 
驱动程序：

<pre>
<code class="language-cpp">#include <PDM.h>

static const char channels = 1;

static const int frequency = 20000;

short sampleBuffer;

volatile int samplesRead;

void setup() {
Serial.begin(115200);
while (!Serial);

PDM.onReceive(onPDMdata);

if (!PDM.begin(channels, frequency)) {
Serial.println("Failed to start PDM!");
while (1);
}
}

void loop() {

if (samplesRead) {

for (int i = 0; i < samplesRead; i++) {
 if (channels == 2) {
 Serial.print("L:");
 Serial.print(sampleBuffer);
 Serial.print(" R:");
 i++;
 }
 Serial.println(sampleBuffer);

}

samplesRead = 0;
}
}

void onPDMdata() {
int bytesAvailable = PDM.available();

PDM.read(sampleBuffer, bytesAvailable);

samplesRead = bytesAvailable / 2;
}
</code></pre>

查看串口打印的波形数据

        将代码下载到 Arduino Nano RP2040 Connect。

        打开 串口监视器，设置波特率为 115200。

使用 Arduino IDE 串口绘图器（Serial Plotter），观察音频数据的波形变化，如下图所示，下图为1KHz正弦波声音产生的波形数据。

<img src="https://bbs.eeworld.com.cn/data/attachment/forum/202412/06/224213onxdv52j99ovc5hn.png.thumb.jpg" />

总结 

Arundio自带的函数库，大大降低了开发难度，我们只需要调用相应的API函数即可配置麦克风的采样频率，配合开发板的多种数据传输功能，可以实现很多有意思的功能。

92596a8368d38aa81897cc36d925d52d 
任务代码：

<div></div>

任务总结：

此次EEWORD论坛的活动，不仅增强了个人的实践能力，在硬件操作、编程技能以及传感器应用方面都有了显著提升。这些知识与经验为后面开发奠定了坚实的基础，同时也激发了个人更多的创新精神。

任务汇总视频：

0054b15e32e32d5f61f8f739b24dc49f

mingzhe123 发表于 2025-1-21 15:45

mingzhe123 发表于 2025-1-21 15:47

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电子工程世界-论坛's Archiver

【Follow me第二季第4期】任务汇总