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zh:learing:examples:simple_keyboard [2016/01/20 03:21] – nzhu | learing:examples:simple_keyboard [2023/06/07 04:23] (当前版本) – 外部编辑 127.0.0.1 | ||
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+ | ====== Simple keyboard using the tone() function(简易键盘) ====== | ||
+ | |||
+ | <WRAP left round info 65%> | ||
+ | 此例程显示了使用tone命令基于按下不同的传感器来产生不同的音高。 | ||
+ | </ | ||
+ | |||
+ | |||
+ | <WRAP left round box 100%> | ||
+ | ===== ALPHA 8F328D-U核心 ===== | ||
+ | ==== 硬件 ==== | ||
+ | |||
+ | ==== 搭建电路 ==== | ||
+ | |||
+ | ==== 代码 ==== | ||
+ | </ | ||
+ | |||
+ | <WRAP left round box 100%> | ||
+ | ===== MangoII ===== | ||
+ | ==== 硬件要求 ==== | ||
+ | |8欧姆阻抗扬声器| | ||
+ | |压敏电阻| | ||
+ | |10k欧姆电阻| | ||
+ | |100欧姆电| | ||
+ | |面包板| | ||
+ | |连接线| | ||
+ | |||
+ | ==== 电路图 ==== | ||
+ | |||
+ | 串联一个100欧姆的电阻在扬声器和控制器数字口8之间,扬声器另一端接地。 | ||
+ | |||
+ | 并联3个压敏电阻到+5v,用3个10k欧姆的电阻接地并分别连接到三个传感器到A0,A1,A2口。 | ||
+ | |||
+ | ==== 代码 ==== | ||
+ | |||
+ | 下面的程序,读取三个模拟值,每一个都从音符数组里对应一个音高值。任何高于给定阈值的模拟数据,都会使扬声器播放出对应的音符。 | ||
+ | |||
+ | <code cpp>/* | ||
+ | keyboard | ||
+ | | ||
+ | */ | ||
+ | |||
+ | #include " | ||
+ | |||
+ | const int threshold = 10; // 产生声音的最小值,阈值 | ||
+ | |||
+ | // 播放的声音,对应三个传感器 | ||
+ | int notes[] = { | ||
+ | NOTE_A4, NOTE_B4, | ||
+ | |||
+ | void setup() { | ||
+ | |||
+ | } | ||
+ | |||
+ | void loop() { | ||
+ | for (int thisSensor = 0; thisSensor < 3; thisSensor++) { | ||
+ | // 读取传感器数据 | ||
+ | int sensorReading = analogRead(thisSensor); | ||
+ | |||
+ | // 如果触发并且得到的值大于阀值: | ||
+ | if (sensorReading > threshold) { | ||
+ | // 播放对应传感器的声音: | ||
+ | tone(8, notes[thisSensor], | ||
+ | } | ||
+ | } | ||
+ | }</ | ||
+ | |||
+ | |||
+ | 下面的代码用到了pitches.h文件。这个文件包含了典型单音音高的值。例如NOTE_C4是中音c,NOTE_FS4是高音F。这个音符表是Brett Hagman原创的,tone命令就是基于此。当你想创作音乐的时候你会发现它太有用了。 | ||
+ | |||
+ | |||
+ | |||
+ | <code cpp>/ | ||
+ | * Public Constants | ||
+ | | ||
+ | |||
+ | #define NOTE_B0 | ||
+ | #define NOTE_C1 | ||
+ | #define NOTE_CS1 35 | ||
+ | #define NOTE_D1 | ||
+ | #define NOTE_DS1 39 | ||
+ | #define NOTE_E1 | ||
+ | #define NOTE_F1 | ||
+ | #define NOTE_FS1 46 | ||
+ | #define NOTE_G1 | ||
+ | #define NOTE_GS1 52 | ||
+ | #define NOTE_A1 | ||
+ | #define NOTE_AS1 58 | ||
+ | #define NOTE_B1 | ||
+ | #define NOTE_C2 | ||
+ | #define NOTE_CS2 69 | ||
+ | #define NOTE_D2 | ||
+ | #define NOTE_DS2 78 | ||
+ | #define NOTE_E2 | ||
+ | #define NOTE_F2 | ||
+ | #define NOTE_FS2 93 | ||
+ | #define NOTE_G2 | ||
+ | #define NOTE_GS2 104 | ||
+ | #define NOTE_A2 | ||
+ | #define NOTE_AS2 117 | ||
+ | #define NOTE_B2 | ||
+ | #define NOTE_C3 | ||
+ | #define NOTE_CS3 139 | ||
+ | #define NOTE_D3 | ||
+ | #define NOTE_DS3 156 | ||
+ | #define NOTE_E3 | ||
+ | #define NOTE_F3 | ||
+ | #define NOTE_FS3 185 | ||
+ | #define NOTE_G3 | ||
+ | #define NOTE_GS3 208 | ||
+ | #define NOTE_A3 | ||
+ | #define NOTE_AS3 233 | ||
+ | #define NOTE_B3 | ||
+ | #define NOTE_C4 | ||
+ | #define NOTE_CS4 277 | ||
+ | #define NOTE_D4 | ||
+ | #define NOTE_DS4 311 | ||
+ | #define NOTE_E4 | ||
+ | #define NOTE_F4 | ||
+ | #define NOTE_FS4 370 | ||
+ | #define NOTE_G4 | ||
+ | #define NOTE_GS4 415 | ||
+ | #define NOTE_A4 | ||
+ | #define NOTE_AS4 466 | ||
+ | #define NOTE_B4 | ||
+ | #define NOTE_C5 | ||
+ | #define NOTE_CS5 554 | ||
+ | #define NOTE_D5 | ||
+ | #define NOTE_DS5 622 | ||
+ | #define NOTE_E5 | ||
+ | #define NOTE_F5 | ||
+ | #define NOTE_FS5 740 | ||
+ | #define NOTE_G5 | ||
+ | #define NOTE_GS5 831 | ||
+ | #define NOTE_A5 | ||
+ | #define NOTE_AS5 932 | ||
+ | #define NOTE_B5 | ||
+ | #define NOTE_C6 | ||
+ | #define NOTE_CS6 1109 | ||
+ | #define NOTE_D6 | ||
+ | #define NOTE_DS6 1245 | ||
+ | #define NOTE_E6 | ||
+ | #define NOTE_F6 | ||
+ | #define NOTE_FS6 1480 | ||
+ | #define NOTE_G6 | ||
+ | #define NOTE_GS6 1661 | ||
+ | #define NOTE_A6 | ||
+ | #define NOTE_AS6 1865 | ||
+ | #define NOTE_B6 | ||
+ | #define NOTE_C7 | ||
+ | #define NOTE_CS7 2217 | ||
+ | #define NOTE_D7 | ||
+ | #define NOTE_DS7 2489 | ||
+ | #define NOTE_E7 | ||
+ | #define NOTE_F7 | ||
+ | #define NOTE_FS7 2960 | ||
+ | #define NOTE_G7 | ||
+ | #define NOTE_GS7 3322 | ||
+ | #define NOTE_A7 | ||
+ | #define NOTE_AS7 3729 | ||
+ | #define NOTE_B7 | ||
+ | #define NOTE_C8 | ||
+ | #define NOTE_CS8 4435 | ||
+ | #define NOTE_D8 | ||
+ | #define NOTE_DS8 4978 | ||
+ | </ | ||
+ | </ | ||