while loop while read button

Question

이 스케치에서 Arduino는 Android 앱에 연결하고 블루투스 연결을 통해 데이터를 수신합니다. 의도 한대로 작동하지만 블루투스가 연결되어 있지 않고 스케치가 직렬 데이터를 수신하지 않으면 스케치가 while 루프에서 멈추게됩니다. 블루투스가 연결되어 있고 직렬 데이터를 수신하고 있다면 제대로 작동하지만 버튼 상태를 읽을 수 있도록 스케치를 while 루프에서 중단시키는 방법을 알 수는 없습니다. while 루프를 중단하여 버튼 상태를 읽는 스케치가 필요합니다. 아무도 아이디어가 없나요? 수신 된 데이터는 다음과 같습니다. L178 : R215 : R-115 : 항상 L 또는 R 다음에 - 기호 또는 빼기 기호가오고 그 뒤에 -255 - 255 숫자가옵니다 항상 기준 :

char myChar = 'a'; 
String string; 
char LorR; 

int M2INA = 8; //left 
int M2INB = 7; 
int M2PWM = 9; 

int M1INA = 11; //right 
int M1INB = 12; 
int M1PWM = 10; 

int ledB = A2; 
int ledR = A3; 
int button = 2; 

int buttonState; 
int val; 
int mode = 0; 

void setup() { 

    pinMode(M1INA, OUTPUT); 
    pinMode(M1INB, OUTPUT); 
    pinMode(M2INA, OUTPUT); 
    pinMode(M2INB, OUTPUT); 
    pinMode(M1PWM, OUTPUT); 
    pinMode(M2PWM, OUTPUT); 
    pinMode(ledB, OUTPUT); 
    pinMode(ledR, OUTPUT); 
    Serial.begin(57600); //230400 460800 921600 

    buttonState = digitalRead(button); // read the initial state 
} 

void loop() { 
    val = digitalRead(button);  // read input value and store it in val 

    if (val != buttonState) {   // the button state has changed! 
    if (val == LOW) {    // check if the button is pressed 
     if (mode == 0) {   // light is off 
     mode = 1;    // light is on! 

     } else { 
     mode = 0;    // light is on! 

     } 
    } 
    } 
    buttonState = val;     // save the new state in our variable 
    if (mode == 0) { 
    btMode(); 
    } 
    if (mode == 1) { 
    followMode(); 
    } 

} 

void followMode() { 
    digitalWrite (ledR, HIGH); 
    digitalWrite (ledB, LOW); 
    } 


void btMode() { 
    digitalWrite (ledR, LOW); 
    digitalWrite (ledB, HIGH); 

    string = ""; 
    //Add to string 

    while (true) { 

     myChar = Serial.read(); 
     if (32 <= myChar && myChar <= 127) { 
     string += myChar; 
     } 
     if (myChar == ':'){ 
     break; 

    }// While End 
    } 
    //Analyse string 
    if (string != "off:" && string != "on:") { 
     if (string != "L0:" && string != "R0:") { 
     //code for setting motor left or right 
     if (string[0] == 'L') { 
      LorR = 'L'; 
     } else { 
      LorR = 'R'; 
     } 
     string.remove(0, 1); 
     //code for putting it in reverse 
     if (string[0] == '-') { 
      string.remove(0, 1); 
      string.remove((string.length() - 1), 1); 
      //Serial.println(string); 
      if (LorR == 'L') { 
      //digitalWrite(M2EN, HIGH); 
      digitalWrite (M2INA, LOW); 
      digitalWrite (M2INB, HIGH); 
      analogWrite(M2PWM, string.toInt()); 

      } else {       //Reverse left 
      //digitalWrite(M1EN, HIGH); 
      digitalWrite (M1INA, LOW); 
      digitalWrite (M1INB, HIGH); 
      analogWrite(M1PWM, string.toInt()); 
      } 
     } else { 
      string.remove((string.length() - 1), 1); 
      if (LorR == 'L') { 
      //digitalWrite(M2EN, HIGH); 
      digitalWrite (M2INA, HIGH); 
      digitalWrite (M2INB, LOW); 
      analogWrite(M2PWM, string.toInt()); 

      } else { 
      digitalWrite (M1INA, HIGH); 
      digitalWrite (M1INB, LOW); 
      analogWrite(M1PWM, string.toInt()); 
      } 
     } 
     } else { 
     allStop(); 
     } 

    }//End of long if statment 
    if (string == "on:") { 

    } 
    if (string == "off:") { 

    }  
    } 


void allStop() { //coast 
    analogWrite(M1PWM, 0); 
    analogWrite(M2PWM, 0); 
    digitalWrite(M1INA, HIGH); 
    digitalWrite(M2INA, HIGH); 
    digitalWrite(M1INB, HIGH); 
    digitalWrite(M2INB, HIGH); 
} 

Answer 1

문제는 내가 버튼을 읽을 수있는 while 루프를 깰 수 없다는 것을,하지만이 작동합니다. 나는

while (mode == 0) { 
readButton(); 

이

while (true) { 

을 변경하고 스케치를 조금 정리. 여기에 마지막이다 : 당신은`if` 문의 다양성에 대해 읽어야

char myChar = 'a'; 
String string; 
char LorR; 

int M2INA = 8; //left 
int M2INB = 7; 
int M2PWM = 9; 

int M1INA = 11; //right 
int M1INB = 12; 
int M1PWM = 10; 

int ledB = A2; 
int ledR = A3; 
int button = 2; 

int buttonState; 
int val; 
int mode = 0; 

unsigned long previousButtonMillis=0; 
const int buttonInterval = 50; // number of millisecs between button reading 
unsigned long previousSerialReadMillis=0; 
const int serialReadInterval = 10; // number of millisecs between button reading 

void setup() { 

    pinMode(M1INA, OUTPUT); 
    pinMode(M1INB, OUTPUT); 
    pinMode(M2INA, OUTPUT); 
    pinMode(M2INB, OUTPUT); 
    pinMode(M1PWM, OUTPUT); 
    pinMode(M2PWM, OUTPUT); 
    pinMode(ledB, OUTPUT); 
    pinMode(ledR, OUTPUT); 
    Serial.begin(57600); //230400 460800 921600 

    buttonState = digitalRead(button); // read the initial state 
} 

void loop() { 

    readButton(); 
    if (mode == 0) { 
    btMode(); 
    } 
    if (mode == 1) { 
    followMode(); 
    } 

} 

void readButton() { 
    if (millis() - previousButtonMillis >= buttonInterval) { 
    val = digitalRead(button);  // read input value and store it in val 
    if (val != buttonState) {   // the button state has changed! 
    if (val == LOW) {    // check if the button is pressed 
     if (mode == 0) {   
     mode = 1;    
     } else { 
     mode = 0;    
     } 
    } 
    } 
    buttonState = val;     // save the new state in our variable 
    previousButtonMillis += buttonInterval; 
} 
} 

void followMode() { 
    digitalWrite (ledR, HIGH); 
    digitalWrite (ledB, LOW); 
} 

void btMode() { 
    digitalWrite (ledR, LOW); 
    digitalWrite (ledB, HIGH); 
if (millis() - previousSerialReadMillis >= serialReadInterval){ 
    string = ""; 

    while (mode == 0) { 
    readButton(); 
    myChar = Serial.read(); 
    if (32 <= myChar && myChar <= 127) { 
     string += myChar; 
    } 
    if (myChar == ':') { 
     break; 
    } 
    } 
    previousSerialReadMillis += serialReadInterval; 
    } // While End 
    analyseString(); 
} 

void analyseString() { 

    if (string != "L0:" && string != "R0:") { 
    //code for setting motor left or right 
    if (string[0] == 'L') { 
     LorR = 'L'; 
    } else { 
     LorR = 'R'; 
    } 
    string.remove(0, 1); 
    //code for putting it in reverse 
    if (string[0] == '-') { 
     string.remove(0, 1); 
     string.remove((string.length() - 1), 1); 
     if (LorR == 'L') { 
     digitalWrite (M2INA, LOW); 
     digitalWrite (M2INB, HIGH); 
     int leftPWM = string.toInt(); 
     if (leftPWM > 80) { 
      leftPWM = 80; 
     } 
     analogWrite(M2PWM, leftPWM); 

     } else {       //Reverse left 
     digitalWrite (M1INA, LOW); 
     digitalWrite (M1INB, HIGH); 
     int rightPWM = string.toInt(); 
     if (rightPWM > 80) { 
      rightPWM = 80; 
     } 
     analogWrite(M1PWM, rightPWM); 
     } 
    } else { 
     string.remove((string.length() - 1), 1); 
     if (LorR == 'L') { 
     digitalWrite (M2INA, HIGH); 
     digitalWrite (M2INB, LOW); 
     analogWrite(M2PWM, string.toInt()); 

     } else { 
     digitalWrite (M1INA, HIGH); 
     digitalWrite (M1INB, LOW); 
     analogWrite(M1PWM, string.toInt()); 
     } 
    } 
    } else { 
    allStop(); 
    } 
    //End of long if statment 
} 

void allStop() { 

    analogWrite(M1PWM, 125); 
    analogWrite(M2PWM, 125); 
    digitalWrite(M1INA, HIGH); 
    digitalWrite(M2INA, HIGH); 
    digitalWrite(M1INB, HIGH); 
    digitalWrite(M2INB, HIGH); 
}