Smartwatch Controller for Arduino Car

1int MSP1 = 3;
2int front = 9;
3int back = 10;
4int left = 11;
5int  right = 12;
6int MSP2 = 5;
7
8
9String data, dataT;
10
11void setup()  {
12  Serial.begin(9600);
13  Serial.setTimeout(3);
14  
15  pinMode(front,OUTPUT);
16  pinMode(back,OUTPUT);
17  pinMode(left,OUTPUT);
18  pinMode(right,OUTPUT);
19  pinMode(MSP1,OUTPUT);
20  pinMode(MSP2,OUTPUT);
21}
22
23void loop() {
24
25  if ( Serial.available()) {
26    data = Serial.readStringUntil('\
\
27');
28
29    // Convert from String Object to String.
30    char buf[30];
31    data.toCharArray(buf,  sizeof(buf));
32    char *p = buf;
33    char *dataC;
34    while ((dataC = strtok_r(p,  ":", &p)) != NULL) // delimiter is the semicolon
35    { dataT = String(dataC);
36      Serial.println(dataT);
37    }
38
39  //front
40    if(dataT=="y0"){
41      digitalWrite(front,LOW);
42      digitalWrite(back,LOW);
43    }
44    else  if(dataT=="y1"){
45      analogWrite(MSP1,75); frontM(); 
46    }
47    else  if(dataT=="y2"){
48      analogWrite(MSP1,135); frontM();
49    }
50    else  if(dataT=="y3"){
51      analogWrite(MSP1,195); frontM();
52    }
53    else  if(dataT=="y4"){
54      analogWrite(MSP1,255); frontM();
55    }
56    if(dataT=="y-1"){
57      analogWrite(MSP1,75); backM();
58    }
59    else if(dataT=="y-2"){
60      analogWrite(MSP1,135); backM();
61    }
62    else if(dataT=="y-3"){
63      analogWrite(MSP1,195); backM();
64    }
65    else if(dataT=="y-4"){
66      analogWrite(MSP1,255); backM();
67    }
68    if(dataT=="x0"){
69      Serial.println("off");
70      digitalWrite(left,LOW);digitalWrite(right,LOW);
71    }
72    else if(dataT=="x2"){
73      leftM();
74    }
75    else if(dataT=="x-2"){
76      rightM();
77    }
78
79  }//if ends
80}//loop
81
82void frontM(){
83  digitalWrite(front,HIGH);
84  digitalWrite(back,LOW);
85}
86void backM(){
87  digitalWrite(back,HIGH);
88  digitalWrite(front,LOW);
89}
90void leftM(){
91  analogWrite(MSP2,255);
92  digitalWrite(left,HIGH);
93  digitalWrite(right,LOW);
94}
95void rightM(){
96  analogWrite(MSP2,255);
97  digitalWrite(right,HIGH);
98  digitalWrite(left,LOW);  
99}