如何读取旋转编码器

Question

您好，我想知道为什么这段代码不起作用，因为编码器正在 100% 工作，而且我确信应该执行读取部分的代码块也能正常工作，请检查代码如果可以的话，我猜一定是某种非常愚蠢的错误.. 或者 arduino uno 是否有可能无法读取这么多引脚？这是代码

问题是由 getTemperature 函数引起的

#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal.h>

#define LDR A0
#define Fan 3
#define ONE_WIRE_BUS 2
#define BACKLIGHT 5
    #define outputA 6
    #define outputB 7

LiquidCrystal lcd(13, 12, 11, 10, 9, 8);
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

float temperature = 0;

int start = 0 , start1 = 0;
unsigned long timer = 0;
unsigned long tx;

    int counter = 0;
    int aState, aLastState;

void setup(void)
{
  Serial.begin(9600);
  sensors.begin();
  lcd.begin(16, 2);
  pinMode(Fan , OUTPUT);
  pinMode(A1,INPUT);
  pinMode(BACKLIGHT,OUTPUT);
  pinMode(4,INPUT_PULLUP);
  setEncoder();  
}


boolean isMin=true;
int temp1=4,temp2=15;
long pressed=millis();
void loop(void)
{
  encoderRead();
  getTemperature();
  if(digitalRead(4)==LOW&&millis()-pressed>=1000){
    isMin = !isMin;
    pressed=millis();
    tx=millis();
  }
  if(isMin){
    //temp2 = map(counter , 0 , 100 , 1 , 60);                       //For setting 15 min time from range of 1-60 minutes
    //tx=millis();
  }else{
    //temp1 = map(counter , 0 , 100 , 1 , 24);                       //For setting 5 hour time from range of 1-24 hour
    //tx=millis();
  }
  String s = "HODINY: "+String(temp1)+"\nMINUTY: "+String(temp2);
  Serial.println(s);
  Serial.println(counter);
  String t1 , t2;

  if (temp1 < 10)
    t1 = " " + String(temp1);
  else
    t1 = String(temp1);

  if (temp2 < 10)
    t2 = " " + String(temp2);
  else
    t2 = String(temp2);

  if (millis() - tx < 600000) {                                            //LCD displays stops every 10 minutes (600000milli seconds)
    lcd.setCursor(0, 0);
    lcd.print("Temp: " + String(temperature));
    lcd.setCursor(0, 1);
    lcd.print("T1: " + String(t1) + " H T2: " + String(t2) + " M");
    digitalWrite(BACKLIGHT,HIGH);
  }
  else
    digitalWrite(BACKLIGHT,LOW);                                          //No data on display

                                                                          //1. LDR - detects LIGHTS ON (daytime)
  if (analogRead(LDR) >= 700 && start == 0) {                             //If it is day time
    start = 1;                                                             //Set start (day) as 1
    start1 = 0;                                                            //Set start1 (night) as 0
    timer = millis();                                                      //Reset timer
    digitalWrite(Fan , HIGH);                                               //Arduino has FANS OFF
    //Serial.println("ZACAL SOM CAST JEDNA");
  }
                                                                           //1. LDR - detects LIGHTS OFF (night time)
  else if (analogRead(LDR) <700 && start1 == 0) {                        //If it is night time
    start = 0;                                                             //Set start (day) as 0
    start1 = 1;                                                            //Set start1 (night) as 1
    timer = millis();                                                      //Reset timer
    digitalWrite(Fan , LOW);                                              //Turn ON Fan When nite time is detected Arduino has FANS ON
    //Serial.println("ZACAL SOM CAST DVA");
  }

  //DAYTIME PROGRAM
  if (start == 1) {
    digitalWrite(Fan , HIGH);                                               //2. Arduino has FANS OFF and waits for temp to reach >90 deg (temperature rises during daytime)
    getTemperature();                                                      //3. Once >90 deg, Arduino runs "Timer A" for 15 minutes (set by pot #A)
    //Serial.println(temperature);
    if (temperature >= 90)                                                 //If temperature is greater then 90
    {
      start = 2;                                                           //Go to step 2
      timer = millis();                                                    //Reset timer
    }
  }
  else if (start == 2) {                                                   //Step2- If it is day time and temperature is greater 90 and timer is then 1-60 minutes set by pot
    if((millis() - timer)/1000 <= temp2 * 60) {                           //Wait for timer 'A' to expire, Arduino has fans off
        //Serial.println((millis() - timer)/1000);
        digitalWrite(Fan , HIGH);
        //Serial.println("CAKAM TIME A");
    }else{
    getTemperature();
    digitalWrite(Fan,LOW);
    start = 3;                                                             //Go to step 3
    timer = millis();                                                      //Reset timer
    }                       
  }
  else if (start == 3 && (millis() - timer)/1000 <= temp1  * 3600) {        //Step3-If it is day time and timer is less then 1-24 hour set by pot
    getTemperature();                                                      //5. Also immediately after 15 minute “Timer A” expires, Arduino runs “Timer B” that runs for 4 hours (set by pot#B).
    if(temperature>=77){                                                   //When temperature is more than 77deg turn on the FAN
      getTemperature();
      digitalWrite(Fan,LOW);
      //Serial.println("ZNIZUJEM TIMER B");
    }
    else if (temperature < 77){                                             //If regular daytime temperature is less then 76 turn OFF FAN
      digitalWrite(Fan , HIGH);                                              //Turn OFF Fan
      //Serial.println("STOJIM");
      getTemperature();
    }
    //Serial.println("CAKAM TIMER B");
  }
  else if(start ==3) {                                                      //If it is day time and timer is greater then 1-24 hour set by pot
    start = 1;                                                              //6. Once 4 hour “Timer B” expires and temperatures have been regulated at >78 <77 during this time, FAN OFF. LOOP TO #2 above (daytime program).
    //Serial.println("ZNOVA ZACINAM DEN");
  }

  //NIGHT TIME PROGRAM
  if (start1 == 1 && (millis() - timer)/1000 < temp1 * 3600) {              //Step1-If it is night time and timer is less then 1-24 hour set by pot
    getTemperature();                                                       //3. Also, as soon as nite time is detected by LDR “Timer B” (set by pot #B) is to run for 4 hours.
    if (temperature >= 70) {                                                //If temperature is greater then 70 turn ON FAN
      //Serial.println("ZNIZUJEM NOC");
      digitalWrite(Fan , LOW);                                             //Turn ON Fan
    }
    else if (temperature <= 69){                                             //If temperature is less= then 69 turn OFF FAN
      //Serial.println("ZVYSUJEM NOC");                         
      digitalWrite(Fan , HIGH);                                              //Turn OFF Fan
    }
  }
  else if (start1 == 1 && (millis() - timer)/1000 >= temp1 * 3600) {        //If it is night and timer is greater then 1-24 hour set by pot
    getTemperature();
    if (temperature >= 66) {                                                //Timer 'B' expired, FANs on until temp is lower than 66deg.
      //Serial.println("KONIEC BCKA IDEM CAKAT NA MENEJ AKO 66");                                             
      digitalWrite(Fan , LOW);                                                
      getTemperature();
    }
                                                                            //Once temperature is lower than 66deg = Arduino runs “Timer A” for 15 minutes (set by pot #A)
    else if(temperature < 66){
      digitalWrite(Fan , HIGH);                                              //Turn OFF Fan
      start1 = 3;                                                           //Go to step 2
      //Serial.println("MENEJ AKO 66");
      timer = millis();                                                     //Reset timer
    }
  }
  else if (start1 == 3 && (millis() - timer)/1000 > temp2 * 60) {           //If it is night time and timer is greater then 1-60 minutes set by pot
                                                                            //7. After “Timer A” expires, LOOP TO #2 (night time program)
    start1 = 1;                                                             //Go to step 1 night time
    timer = millis();                                                       //Reset timer
    //Serial.println("ZACINAM ZNOVA NOCICKU");
  }
}

void getTemperature(){
  sensors.requestTemperatures();
  temperature = sensors.getTempFByIndex(0);
}
void encoderRead(){
  aState = digitalRead(outputA);
  if(aState != aLastState){
    if(digitalRead(outputB)!=aState){
      if(counter<=100){
        counter++;
      }
    }else{
      if(counter>=0){
       counter--;
      }
    }
  }
  aLastState = aState;
}
void setEncoder(){
  pinMode(outputA,INPUT);
  pinMode(outputB,INPUT);
  aLastState = digitalRead(outputA);
}

这是我测试过的代码，readigs 很好

#define outputA 6
#define outputB 7

int counter = 0;
int aState,aLastState;
void setup(void)
{
  Serial.begin(9600);
  pinMode(4,INPUT_PULLUP);
  setEncoder();  
}

void loop() {
  encoderRead();
  Serial.println(counter);
}

void encoderRead(){
  aState = digitalRead(outputA);
  if(aState != aLastState){
    if(digitalRead(outputB)!=aState){
      if(counter<=100){
        counter++;
      }
    }else{
      if(counter>=0){
       counter--;
      }
    }
  }
  aLastState = aState;
}
void setEncoder(){
  pinMode(outputA,INPUT);
  pinMode(outputB,INPUT);
  aLastState = digitalRead(outputA);
}

Answer 1

代码太长，arduino 缺少信号，这样长的代码需要中断才能与 rotart 编码器一起使用。