67 lines
1.6 KiB
C++
Executable File
67 lines
1.6 KiB
C++
Executable File
/*
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23 MC猜数字 - 5 建立函数 - 2
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太极创客
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www.taichi-maker.com
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此程序用于太极创客<<零基础入门学用Arduino教程>>23 MC猜数字 - 5 建立函数
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演示如何建立有参数的用户自定义函数。
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2017-04-21
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*/
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void setup() {
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int pinNumber = 3;
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while(pinNumber <= 9){
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pinMode(pinNumber, OUTPUT);
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pinNumber = pinNumber + 1;
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}
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}
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// the loop function runs over and over again forever
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void loop() {
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int myNumber = random(0, 4); //产生随机1-3数字
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displayNumber(myNumber); //显示数字
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delay(500);
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displayClear(); //清理显示
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delay(500);
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}
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void displayNumber(int ledNumber){ //LED数码管显示数字
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switch(ledNumber) {
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case 1: //显示1
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digitalWrite(4, HIGH);
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digitalWrite(7, HIGH);
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break;
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case 2: //显示2
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digitalWrite(3, HIGH);
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digitalWrite(4, HIGH);
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digitalWrite(5, HIGH);
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digitalWrite(8, HIGH);
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digitalWrite(9, HIGH);
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break;
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case 3: //显示3
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digitalWrite(3, HIGH);
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digitalWrite(4, HIGH);
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digitalWrite(5, HIGH);
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digitalWrite(7, HIGH);
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digitalWrite(8, HIGH);
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break;
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default: //默认显示
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digitalWrite(4, HIGH);
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digitalWrite(5, HIGH);
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digitalWrite(7, HIGH);
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digitalWrite(8, HIGH);
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digitalWrite(9, HIGH);
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}
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}
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void displayClear(){ //清理LED数码管显示内容
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digitalWrite(3, LOW);
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digitalWrite(4, LOW);
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digitalWrite(5, LOW);
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digitalWrite(6, LOW);
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digitalWrite(7, LOW);
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digitalWrite(8, LOW);
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digitalWrite(9, LOW);
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}
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