esper_Shared_Mobility_Repo/Receiver_servo/Receiver_servo.ino

#include<SoftwareSerial.h>
#include<Servo.h>
SoftwareSerial xbee(2,3);
#define LEN 13
#define servoPin 9
int count = 0, flag = 1, angle = 0, a = 1;
Servo myservo;

void setup() {
 Serial.begin(9600);
 xbee.begin(9600);
 myservo.attach(servoPin);
 myservo.write(0);
}

void loop() {
  char arr[LEN] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.', 'o', 'x'};
  char ch = xbee.read();
  
  for(int i = 0; i < LEN; i++){
    if(ch == '*') count++;
    
    else if(count >= 3 && ch == '!'){
      count = 0;
      Serial.println();
    }
    
    else if(count >= 3 && ch == arr[i]){
      if(ch == 'x'){
        flag = 0;
        }
       else if(ch == 'o'){
        flag = 1;
        }
       Serial.write(ch);
   } 
 }
 if(flag == 1){
  if(angle == 180){
    a = -10;
    
  }else if(angle == 0){
    a = 10;
  }
  angle += a;
  myservo.write(angle);
  delay(10);
  }
 }