[作品提交] 【Follow me第二季第2期】入门环境搭建、闪灯和串口发送

lijinlei 2024-8-29 18:44 楼主

# 【Follow me第二季第2期】入门环境搭建、闪灯和串口发送

Arduino UNO R4 WiFi 开发板官网介绍：[UNO R4 WiFi ](https://docs.arduino.cc/hardware/uno-r4-wifi/)

Follow me 活动介绍官网：[Follow me第二季第2期！与得捷一起解锁开发板超能力！ (eeworld.com.cn)](https://www.eeworld.com.cn/huodong/digikey_follow_me_2024_02/)

本次活动我选择采购的物品为 [Arduino UNO R4 WiFi](https://www.digikey.cn/zh/products/detail/arduino/ABX00087/20371539) 开发板一块，[SHT40](https://www.digikey.cn/zh/products/detail/adafruit-industries-llc/4885/13694670)温湿度传感器扩展板。

[TOC]

## 硬件

开发板包装外观及实物展示如下

SHT40 温湿度传感器模块如下

开发板上电效果展示
<div id="player_142f5820881245b79d8cd209ee7d0d6b0" class="localvideo-box"></div><div class="localvideo-title">VID_20240827_181537_preload</div><br/>

预装载程序详见 [Getting Started with UNO R4 WiFi | Arduino Documentation](https://docs.arduino.cc/tutorials/uno-r4-wifi/r4-wifi-getting-started/) .

## 环境搭建

官网下载并安装最新版 Arduino IDE： [Software | Arduino](https://www.arduino.cc/en/software) .

运行软件，*开发板管理* 搜索 `R4` 并安装最新版程序扩展包

## 闪灯 Blink

新建工程，闪灯代码如下

```c++
void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
}
void loop() {
  digitalWrite(LED_BUILTIN, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(500);                      // wait for a second
  digitalWrite(LED_BUILTIN, LOW);   // turn the LED off by making the voltage LOW
  delay(500);                      // wait for a second
}

```

或使用软件自带的 `Blink` 例子

使用 Type-C 数据线连接开发板，在 *设备管理器* 中识别并获取设备的 *串行端口号* ，选择对应的开发板型号

点击 *上传* 按钮，等待程序编译并下载成功即可。

实现效果如下
<div id="player_1578235edc206374d46e9fede3c7f2fe1" class="localvideo-box"></div><div class="localvideo-title">VID_20240827_221903_blink</div><br/>

## 串口通信

代码如下

```c++
void setup() {
  Serial.begin(115200);
}
void loop() {
  Serial.println("Hello EEWorld!");
  delay(500);
}
```

实现效果如下
<div id="player_10c4364bdc46c225c50c729b261a30722" class="localvideo-box"></div><div class="localvideo-title">VID_20240827_223646_Hello</div><br/>

## 矩阵LED

代码如下

```
#include "Arduino_LED_Matrix.h"   // Include the LED_Matrix library
#include "frames.h"               // Include a header file containing some custom icons

ArduinoLEDMatrix matrix;          // Create an instance of the ArduinoLEDMatrix class

void setup() {
  Serial.begin(115200);           // Initialize serial communication at a baud rate of 115200
  matrix.begin();                 // Initialize the LED matrix
}

void loop() {
  // Load and display the "chip" frame on the LED matrix
  matrix.loadFrame(chip);
  delay(500);  // Pause for 500 milliseconds (half a second)

// Load and display the "danger" frame on the LED matrix
  matrix.loadFrame(danger);
  delay(500);

// Load and display the "happy" frame on the LED matrix
  matrix.loadFrame(happy);
  delay(500);

// Load and display the "big heart" frame provided by the library
  matrix.loadFrame(LEDMATRIX_HEART_BIG);
  delay(500);

// Turn off the display
  matrix.clear();
  delay(1000);

// Print the current value of millis() to the serial monitor
  Serial.println(millis());
}
```

实现效果如下
<div id="player_b8cd13cbe043b07a872f9e976f5804a93" class="localvideo-box"></div><div class="localvideo-title">VID_20240827_224123_LED_matrix</div><br/>

MCU 开发者和爱好者