【Follow me第二季第4期】Blink、串口打印

lijinlei

【Follow me第二季第4期】Blink、串口打印 [复制链接]

# 【Follow me第二季第4期】Blink、串口打印

## Blink

所需板载元件：红色-绿色-蓝色 LED

由原理图可知，板载 RGB 三个 LED 为低电平点亮，

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因此，要实现闪灯效果，只需要令 LEDR、LEDG、LEDB 循环输出低电平即可。

### 流程图

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<div class="tip tip_4 aimg_tip" id="aimg_866610_menu" style="position: absolute; display: none" disautofocus="true">
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<p><strong>Blink_Flowchart.png</strong> <em class="xg1">(7.97 KB, 下载次数: 0)</em></p>
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<a href="javascript:;" class="loginf" >下载附件</a>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_866610" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=866610&handlekey=savephoto_866610">保存到相册</a>

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### 代码

```c++
#include "WiFiNINA.h"

void setup() {
Serial.begin(9600);
pinMode(LEDR, OUTPUT);
pinMode(LEDG, OUTPUT);
pinMode(LEDB, OUTPUT);
}

void loop() {
// Red
digitalWrite(LEDR, LOW);
digitalWrite(LEDG, HIGH);
digitalWrite(LEDB, HIGH);
delay(500);
// Green
digitalWrite(LEDR, HIGH);
digitalWrite(LEDG, LOW);
digitalWrite(LEDB, HIGH);
delay(500);
// Blue
digitalWrite(LEDR, HIGH);
digitalWrite(LEDG, HIGH);
digitalWrite(LEDB, LOW);
delay(500);
}
```

### 效果

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<div class="tip tip_4 aimg_tip" id="aimg_866609_menu" style="position: absolute; display: none" disautofocus="true">
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<p><strong>RGB_Blink.gif</strong> <em class="xg1">(745.78 KB, 下载次数: 0)</em></p>
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<a href="javascript:;" class="loginf" >下载附件</a>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_866609" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=866609&handlekey=savephoto_866609">保存到相册</a>

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## 串口打印

所用板载元件：串口通信接口，即Type-C接口和数据线

### 流程图

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<div class="tip tip_4 aimg_tip" id="aimg_866608_menu" style="position: absolute; display: none" disautofocus="true">
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<p><strong>UART_printf_flowchart.png</strong> <em class="xg1">(7.99 KB, 下载次数: 0)</em></p>
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<a href="javascript:;" class="loginf" >下载附件</a>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_866608" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=866608&handlekey=savephoto_866608">保存到相册</a>

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### 代码

```c++
void setup() {
Serial.begin(9600);
}

void loop() {
Serial.println("Hello DigiKey & EEWorld！");
delay(500);
}
```

波特率 9600 bps

### 效果

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<div class="tip tip_4 aimg_tip" id="aimg_866607_menu" style="position: absolute; display: none" disautofocus="true">
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<p><strong>Printf.gif</strong> <em class="xg1">(8.43 KB, 下载次数: 0)</em></p>
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<a href="javascript:;" class="loginf" >下载附件</a>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_866607" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=866607&handlekey=savephoto_866607">保存到相册</a>

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