ARDUINO按鈕不會隨機化我的號碼

Question

請幫助我。當我按下按鈕Arduino不會隨機化任何數字？我找不到解決方案，我希望你們能幫助我。 該項目是一個公平的我的學校每年舉辦。如果你們需要更多的信息，隨時提問！

const int buttonPin = 1; 
const int ledPin = 12;  
int ledState = HIGH;   
int buttonState;    
int lastButtonState = LOW; 
int counter = 0; 
int randNumber; 

// the following variables are long's because the time, measured in miliseconds, 
// will quickly become a bigger number than can be stored in an int. 
long lastDebounceTime = 0; // the last time the output pin was toggled 
long debounceDelay = 50; // the debounce time; increase if the output flickers 


void setup() { 
    pinMode(buttonPin, INPUT); 
    pinMode(ledPin, OUTPUT); 

    // set initial LED state 
    digitalWrite(ledPin, ledState); 
    Serial.begin(1200); 
} 

void loop() { 
    if(counter==0 && buttonState==HIGH){ 
    randNumber = random(1,7); 
    Serial.println(randNumber); 
    Serial.println("counter" + counter); 
    counter=2; 

    } 


    int reading = digitalRead(buttonPin); 

    if (reading != lastButtonState) { 

    lastDebounceTime = millis(); 
    } 

    if ((millis() - lastDebounceTime) > debounceDelay) { 
     if (reading != buttonState) { 
     buttonState = reading; 

     if (buttonState == HIGH) { 
     ledState = !ledState; 

     } 
    } 
    } 

    // set the LED: 
    digitalWrite(ledPin, ledState); 

    // save the reading. Next time through the loop, 
    // it'll be the lastButtonState: 
    lastButtonState = reading; 
} 

Answer 1

由於您每次都重置狀態，您的反彈將永遠不會奏效。

由於重新發明輪子是無用的，我建議您使用Bounce2庫，它可以爲您處理反彈。

這樣的東西應該可以工作......我還修復了一些類型（可以使用byte而不是int，因爲處理器是8位的）。

#include <Bounce2.h> 

Bounce debouncedButton = Bounce(); 

const byte buttonPin = 1; 
const byte ledPin = 12;  
byte ledState = HIGH; 
byte randNumber; 

byte lastButtonState; 

const byte debounceDelay = 50; // the debounce time; increase if the output flickers 

void setup() { 
    pinMode(buttonPin, INPUT); 
    pinMode(ledPin, OUTPUT); 

    debouncedButton.attach(buttonPin); 
    debouncedButton.interval(debounceDelay); 

    // set initial LED state 
    digitalWrite(ledPin, ledState); 
    Serial.begin(1200); 
    lastButtonState = digitalRead(buttonPin); 
} 

void loop() { 
    debouncedButton.update(); 

    byte buttonState = debouncedButton.read(); 

    if(counter==0 && buttonState==HIGH){ 
     randNumber = random(1,7); 
     Serial.println(randNumber); 
     Serial.println("counter" + counter); 
     counter=2; 
    } 

    if ((lastButtonState != buttonState) && (buttonState == HIGH)) 
     ledState = !ledState; 

    digitalWrite(ledPin, ledState); 

    lastButtonState = buttonState; 
} 

就兩件事：

1. 你爲什麼要使用1200的B/S波特率？它不是太低？通常最低使用的是9600，但我通常使用115200（除非其他設備不支持它）
2. 我無法理解counter變量的用法。你使用它（和我複製）的方式將防止隨機數的產生，因爲沒有東西會重置它。如果要算號的數量產生去除counter==0測試，寫counter++代替counter=2並在setup函數的變量初始化爲0