c++ - 使用按钮为C++创建计数器

Question

我试图将按钮按下计数器与我的氩气设备放在一起。我有几种声音要在它们之间交替，但无法获得用于改变歌曲A和B的计数器。我想将歌曲A设置为反偶数，将歌曲B设置为反偶数。我目前所剩无几，也不知道该从哪里去。不知道如何上传我当前的内容。

int button = A0;

int buzzer = A2;

// Defining Sound
int sound1[] = {1700,2500,2800,2000,2500,1500,2000,1800};

int sound2[] = {3800,3600,3400,3200,2400,2600,2800,3000};

//Defining Duration Of Notes

int Duration1[] = {4,2,4,2,4,2,4,2};

int Duration2[] = {2,4,2,4,2,2,4,2};

//Setting Button Count
int bcount = 0;
#define MAX 2

//Creates The Setup Of Code
void setup()
{
    //Creates The Input Of Button Being Pressed
    pinMode (button, INPUT);
    //Creates The Output Of The Buzzer 
    pinMode (buzzer, OUTPUT);
}

void loop() {
    //When Button Is Pressed 
    if (digitalRead(button) == 1) {
        bcount = bcount + 1;
        }
        else if 
                (bcount = 0);
        for (int i = 0; i < bcount; i++) {
            digitalWrite(buzzer, 1);

    if (bcount == MAX) {
        bcount = 0;
        break;
    }
        //Reads Notes
        for (int Note = 0; Note < 8; Note++){
            //Note Duration
            int Duration = 1000/Duration1[Note];
            //Sends Notes To Speaker
            tone(buzzer, sound1[Note], Duration);
            //Sets Delay Between Notes
            int pauseBetweenNotes = Duration * 1.50;
            //Delay Itself
            delay(pauseBetweenNotes);
            //Stop To The Sound
            noTone(buzzer);
        }
    }
        //When Button Is Pressed 2nd Time
      if(digitalRead(button) == 2) {
        //Reads Notes
        for (int Note = 0; Note < 8; Note++){
            //Note Duration
            int Duration = 1000/Duration2[Note];
            //Sends Notes To Speaker
            tone(buzzer, sound2[Note], Duration);
            //Sets Delay Between Notes
            int pauseBetweenNotes = Duration * 1.50;
            //Delay Itself
            delay(pauseBetweenNotes);
            //Stop To The Sound
            noTone(buzzer);
}
}
}

Answer 1

试试这个:

int counter = 0;
void loop() {
    if (digitalRead(button) == HIGH) {
        counter = counter + 1;
        if (counter % 2 == 1) {
            // ... place your code for sound#1 here.
        } else {
            // ... place your code for sound#2 here.
        }
    }
}

这里发生的事情是:每次按下按钮，我们都会增加一个计数器。如果按下按钮的次数为奇数，则播放第一个声音，如果为偶数，则播放第二个声音。

将计数器存储在循环函数外部很重要，这样它就不会在循环调用之间丢失其值。

另外，请注意，如果按下按钮，digitalRead会返回HIGH，否则会返回LOW。数不清的打印机您都必须自己动手。

https://docs.particle.io/reference/device-os/firmware/argon/#digitalread-