長輩視訊-arduino

這邊主要是Arduino接收到人的動作所要下達的指令，還有與PC連線時，PC要確保USB還連線著，所以PC會定時傳訊息詢問連線狀態，Arduino要做回應。

code

#define phonepin 6
#define audiopin 7
#define voluppin 4
#define voldownpin 5
#define audioctrlpin 3
#define earphonectrlpin 2
#define ledpin 13

int phonestate = 0;
int phonestate_ = 0;
int audio = 0;
int audio_ = 0;
int audiostate = 0;
int volup = 0;
int volup_ = 0;
int voldown = 0;
int voldown_ = 0;

void setup() {
  // put your setup code here, to run once:
  pinMode(phonepin, INPUT);
  pinMode(audiopin, INPUT);
  pinMode(voluppin, INPUT);
  pinMode(voldownpin, INPUT);
  pinMode(audioctrlpin, OUTPUT);
  pinMode(earphonectrlpin, OUTPUT);
  pinMode(ledpin, OUTPUT);
  
  digitalWrite(audioctrlpin, HIGH);
  delay(10);
  digitalWrite(audioctrlpin, LOW);
  audiostate = 1;
  
  Serial.begin(9600);
  //Keyboard.begin();

  if(phonestate == 0){ 
    digitalWrite(ledpin, HIGH);
  }else{
    digitalWrite(ledpin, LOW);
  }
}

void loop() {
  // put your main code here, to run repeatedly:

  //delay(30);
  
  /*pick up and hang up phone 拿起電話及掛斷電話*/
  phonestate = digitalRead(phonepin);
  if(phonestate_ != phonestate){
    phonectrl();
  }

  /*audio ctrl 擴音控制*/
  audio = digitalRead(audiopin);
  if(audio_ != audio){
    audioctrl();
  }

  /*volume up 音量調大*/
  volup = digitalRead(voluppin);
  if(volup_ != volup){
    volupctrl();
  }

  /*volume down 音量調小*/
  voldown = digitalRead(voldownpin);
  if(voldown_ != voldown){
    voldownctrl();
  }

  /*read serial text from PC 讀電腦傳的訊息*/
  if (Serial.available()>0){
    String text = serialreadtext();
    //char text = Serial.read();
    if(text == "Hey"){
      Serial.println("exist");
    }
    else if(text == "quit"){
      Serial.println("quit");
    }
  } 
}

/**************                      ***************
 **************      other code      ***************
 **************                      ***************/

/*read string 讀字串*/
String serialreadtext(){
  char serialtext;
  String data = "";
  int space = -1;
  while((serialtext = Serial.read()) != '\n'){
    if((int)serialtext != space){
       data += serialtext;
    }
  }
  return data;
}

/*pick up and hang up phone 拿起電話及掛斷電話*/
void phonectrl(){
  delay(30);
  if(phonestate == 0){
    Serial.println("pick up");
    digitalWrite(ledpin, HIGH);
    digitalWrite(earphonectrlpin, HIGH);
    delay(10);
    digitalWrite(earphonectrlpin, LOW);
    audiostate = 0;      
  }
  else{
    Serial.println("hang up");
    digitalWrite(ledpin, LOW);
    digitalWrite(audioctrlpin, HIGH);
    delay(10);
    digitalWrite(audioctrlpin, LOW);
    audiostate = 1;
  }
  phonestate_ = phonestate;
}

/*audio ctrl 擴音控制*/
void audioctrl(){  
  delay(30);
  if(audio == 1&& audiostate == 0){
    digitalWrite(audioctrlpin, HIGH);
    delay(10);
    digitalWrite(audioctrlpin, LOW);
    audiostate = 1;
  }
  else if(audio == 1 && audiostate == 1){
    digitalWrite(earphonectrlpin, HIGH);
    delay(10);
    digitalWrite(earphonectrlpin, LOW);
    audiostate = 0;      
  }
  audio_ = audio;
}

/*volume up 音量調大*/
void volupctrl(){    
  delay(30);
  if(volup == 1){
    Serial.println("vol up");
    //Keyboard.write(175);
  }
  volup_ = volup;
}

/*volume down 音量調小*/
void voldownctrl(){
  delay(30);
  if(voldown == 1){
    Serial.println("vol down");
    //Keyboard.write(174);
  }
  voldown_ = voldown;
}