BBC micro：bit编程实战：使用Microsoft MakeCode

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"BBC micro：bit Recipes.pdf" 是一本由Pradeeka Seneviratne编写的书籍，旨在帮助读者通过微软的MakeCode网络编辑器学习如何为BBC micro:bit编程。这本书采用了一种解决问题的实用方法，适合初学者，尤其是那些从未接触过编程的人。BBC micro:bit是一个小型可编程设备，结合了计算机和可编程嵌入式板的功能，设计得既易于编程又多功能。在本书中，读者将学习如何利用MakeCode进行编程，创建包括简单游戏和精灵在内的各种应用，同时能够管理分数和控制游戏流程。micro:bit内置了各种传感器，如加速度计、指南针、温度传感器、触摸输入和光敏传感器，这些都将在书中得到详细介绍，读者将学会如何读取和处理这些传感器的数据。此外，作者还会讲解如何使用通信协议，如串行、I2C和SPI，这些是连接和通信的基础。编程概念如变量、循环、逻辑操作、数组、数学运算和函数也将被深入探讨，这些都是解决实际问题的关键工具。通过本书，读者不仅可以掌握MakeCode编辑器的基本使用，还能培养出解决问题的能力。 "Apress" 是出版此书的标签，表明了该书的专业性和可靠性。此书的内容丰富，旨在将复杂的编程概念以简单易懂的方式呈现，使学习过程更加有趣和实践导向。无论是对教育工作者还是对个人学习者来说，"BBC micro:bit Recipes" 都是一本宝贵的资源，能有效提升编程技能，尤其是在使用微软MakeCode为micro:bit进行编程时。

10 -2. Finding the Number of Items in an Array .................................................224

Problem .......................................................................................................224

Solution .......................................................................................................225

How It Works ...............................................................................................227

10 -3. Finding an Item at Specied Location in an Array ................................... 227

Problem .......................................................................................................227

Solution .......................................................................................................227

How It Works ...............................................................................................229

10 -4. Replacing an Item in an Array .................................................................229

Problem .......................................................................................................229

Solution .......................................................................................................230

How It Works ...............................................................................................231

10 -5. Inserting an Item to the End of an Array .................................................. 232

Problem .......................................................................................................232

Solution .......................................................................................................232

How It Works ...............................................................................................234

10 -6. Removing Last Item from an Array ..........................................................235

Problem .......................................................................................................235

Solution .......................................................................................................235

How It Works ...............................................................................................237

10 -7. Finding the Index of an Item in an Array ..................................................238

Problem .......................................................................................................238

Solution .......................................................................................................238

How It Works ...............................................................................................239

10 -8. Inserting an Item to an Array ...................................................................239

Problem .......................................................................................................239

Solution .......................................................................................................240

How It Works ...............................................................................................242

Table of ConTenTsTable of ConTenTs

xvi

10 -9. Displaying All the Items of an Array .........................................................242

Problem .......................................................................................................242

Solution .......................................................................................................243

How It Works ...............................................................................................244

10 -10. Reversing the Items of an Array ............................................................244

Problem .......................................................................................................244

Solution .......................................................................................................245

How It Works ...............................................................................................246

Chapter 11: Playing Music ��247

11 -1. Connecting a Speaker to Pin 0 ................................................................247

Problem .......................................................................................................247

Solution .......................................................................................................247

How It Works ...............................................................................................249

11 -2. Connecting a Speaker to Other Pins ........................................................ 249

Problem .......................................................................................................249

Solution .......................................................................................................249

How It Works ...............................................................................................251

11 -3. Using Earphones ......................................................................................251

Problem .......................................................................................................251

Solution .......................................................................................................252

How It Works ...............................................................................................253

11 -4. Using Ampliers ......................................................................................253

Problem .......................................................................................................253

Solution .......................................................................................................253

How It Works ...............................................................................................254

Table of ConTenTsTable of ConTenTs

xvii

11 -5. Playing Built-In Melodies .........................................................................254

Problem .......................................................................................................254

Solution .......................................................................................................255

How It Works ...............................................................................................255

11 -6. Playing a Tone or Note ............................................................................. 257

Problem .......................................................................................................257

Solution .......................................................................................................257

How It Works ...............................................................................................257

11 -7. Using Octaves .......................................................................................... 263

Problem .......................................................................................................263

Solution .......................................................................................................263

How It Works ...............................................................................................264

11 -8. Playing a Note or Tone for Given Duration ...............................................265

Problem .......................................................................................................265

Solution .......................................................................................................265

How It Works ...............................................................................................266

11 -9. Setting the Tempo ....................................................................................268

Problem .......................................................................................................268

Solution .......................................................................................................268

How It Works ...............................................................................................269

11 -10. Getting the Tempo ..................................................................................270

Problem .......................................................................................................270

Solution .......................................................................................................270

How It Works ...............................................................................................271

11 -11. Getting the Duration of a Beat ...............................................................271

Problem .......................................................................................................271

Solution .......................................................................................................271

How It Works ...............................................................................................272

Table of ConTenTsTable of ConTenTs

xviii

11 -12. Using Music Events ...............................................................................272

Problem .......................................................................................................272

Solution .......................................................................................................272

How It Works ...............................................................................................273

11 -13. Adding Silence Between Notes and Tones.............................................274

Problem .......................................................................................................274

Solution .......................................................................................................274

How It Works ...............................................................................................275

Chapter 12: Using Sensors ��277

12 -1. Using Built-In Accelerometer ...................................................................277

Problem .......................................................................................................277

Solution .......................................................................................................277

How It Works ...............................................................................................278

12 -2. Using Gestures ........................................................................................280

Problem .......................................................................................................280

Solution .......................................................................................................280

How It Works ...............................................................................................281

12 -3. Using Compass ........................................................................................ 283

Problem .......................................................................................................283

Solution .......................................................................................................283

How It Works ...............................................................................................285

12 -4. Calibrating the Compass .........................................................................285

Problem .......................................................................................................285

Solution .......................................................................................................285

How It Works ...............................................................................................286

Table of ConTenTsTable of ConTenTs

xix

12 -5. Using Built-In Temperature Sensor .......................................................... 286

Problem .......................................................................................................286

Solution .......................................................................................................287

How It Works ...............................................................................................287

12 -6. Using Built-In Light Sensor ...................................................................... 288

Problem .......................................................................................................288

Solution .......................................................................................................288

How It Works ...............................................................................................289

12 -7. Using Touch Pins......................................................................................290

Problem .......................................................................................................290

Solution .......................................................................................................290

How It Works ...............................................................................................290

Chapter 13: Using Bluetooth Services ��291

13 -1. Adding Bluetooth Services Extension ......................................................291

Problem .......................................................................................................291

Solution .......................................................................................................291

How It Works ...............................................................................................293

13 -2. Pairing Your micro:bit ..............................................................................293

Problem .......................................................................................................293

Solution .......................................................................................................293

How It Works ...............................................................................................297

13 -3. Setting the Transmission Power ..............................................................298

Problem .......................................................................................................298

Solution .......................................................................................................298

How It Works ...............................................................................................299

Table of ConTenTsTable of ConTenTs

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