Stap 6: Arduino Code
In deze stap zullen we kijken naar de code van de arduino voor het project Smart Car Parking. De code krijgt de gegevens van de ultrasone sensoren en het zal post-it naar de webpagina. Hier is de code:
#include <p>#include #include </p><p>Servo servo; //declaring variables to get the right data int available1; int available2; int available3; int available4; int available5; //distance for teh ultrasonic sensor long distance1; long distance2; long distance3; long distance4; long distance5; //duration taken for the sensor to transmit ultrasonic waves long duration1; long duration2; long duration3; long duration4; long duration5; //opening the servo for the cars to enter long servoduration; long servodistance; //the output pins for the sensor #define trig1 26 #define trig2 28 #define trig3 30 #define trig4 32 #define trig5 34 //the input pins for the sensor #define echo1 27 #define echo2 29 #define echo3 31 #define echo4 33 #define echo5 35 //the out and in pins for the sensor #define servotrig 38 #define servoecho 39 //ethernet datapins char server[] = "192.168.137.1"; EthernetClient client; //default computer address byte mac[]={ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };</p><p>int response;</p><p>void setup() {</p><p> Ethernet.begin(mac); Serial.begin (9600); delay(100);</p><p>// response = client.connect(server, 80); // // if (response) { // Serial.println("connected"); // } else { // // if you didn't get a connection to the server: // Serial.println("connection failed"); // } //defining the modes of the pins for the sensor pinMode(trig1,OUTPUT); pinMode(trig2,OUTPUT); pinMode(trig3,OUTPUT); pinMode(trig4,OUTPUT); pinMode(trig5,OUTPUT); pinMode(echo1,INPUT); pinMode(echo2,INPUT); pinMode(echo3,INPUT); pinMode(echo4,INPUT); pinMode(echo5,INPUT); pinMode(servotrig,OUTPUT); pinMode(servoecho,INPUT);</p><p> servo.attach(37); }</p><p>void loop() { //finding the distance for each of the sensors digitalWrite(trig1, LOW); delayMicroseconds(2); digitalWrite(trig1, HIGH); delayMicroseconds(10); digitalWrite(trig1, LOW); duration1 = pulseIn(echo1, HIGH); distance1 = (duration1/2) / 29.1;</p><p> digitalWrite(trig2, LOW); delayMicroseconds(2); digitalWrite(trig2, HIGH); delayMicroseconds(10); digitalWrite(trig2, LOW); duration2 = pulseIn(echo2, HIGH); distance2 = (duration2/2) / 29.1;</p><p> digitalWrite(trig3, LOW); delayMicroseconds(2); digitalWrite(trig3, HIGH); delayMicroseconds(10); digitalWrite(trig3, LOW); duration3 = pulseIn(echo3, HIGH); distance3 = (duration3/2) / 29.1;</p><p> digitalWrite(trig4, LOW); delayMicroseconds(2); digitalWrite(trig4, HIGH); delayMicroseconds(10); digitalWrite(trig4, LOW); duration4 = pulseIn(echo4, HIGH); distance4 = (duration4/2) / 29.1;</p><p> digitalWrite(trig5, LOW); delayMicroseconds(2); digitalWrite(trig5, HIGH); delayMicroseconds(10); digitalWrite(trig5, LOW); duration5 = pulseIn(echo5, HIGH); distance5 = (duration5/2) / 29.1;</p><p> Serial.print("Distance 1:"); Serial.print(distance1); Serial.println("cm");</p><p> Serial.print("Distance 2:"); Serial.print(distance2); Serial.println("cm");</p><p> Serial.print("Distance 3:"); Serial.print(distance3); Serial.println("cm");</p><p> Serial.print("Distance 4:"); Serial.print(distance4); Serial.println("cm");</p><p> Serial.print("Distance 5:"); Serial.print(distance5); Serial.println("cm");</p><p> delay(100);</p><p>//getting the actual value required to do the project successfully if(distance1<6) { available1=0; } else{ available1 =1; } </p><p> if(distance2<6) { available2=0; } else{ available2 =1; }</p><p> if(distance3<6) { available3=0; } else{ available3 =1; } if(distance4<6) { available4=0; } else{ available4 =1; } if(distance5<6) { available5=0; } else{ available5 =1; }</p><p> digitalWrite(servotrig, LOW); delayMicroseconds(2); digitalWrite(servotrig, HIGH); delayMicroseconds(10); digitalWrite(servotrig, LOW); servoduration = pulseIn(servoecho, HIGH); if(servodistance<10) { servo.write(90); } else { servo.write(-90); }</p><p>//passing the variables to the php page.</p><p> if (!client.connected()) { Serial.print("Available1="); Serial.println(available1); Serial.print("Available2="); Serial.println(available2); Serial.print("Available3="); Serial.println(available3); Serial.print("Available4="); Serial.println(available4); Serial.print("Available5="); Serial.println(available5); client.stop(); delay(100); if (client.connect(server, 80)) { Serial.println("connected"); // Make a HTTP request: client.print("GET /UpdateAvailability.php?Position="); client.print("1"); client.print("&&"); client.print("Available="); client.print(available1); client.println(" HTTP/1.1"); client.println("Host: 192.168.137.1"); client.println("Connection: close"); client.println(); client.stop(); } else { // if you didn't get a connection to the server: Serial.println("connection failed"); }</p><p> if (client.connect(server, 80)) { Serial.println("connected"); // Make a HTTP request: client.print("GET /UpdateAvailability.php?Position="); client.print("2"); client.print("&&"); client.print("Available="); client.print(available2); client.println(" HTTP/1.1"); client.println("Host: 192.168.137.1"); client.println("Connection: close"); client.println(); client.stop(); } else { // if you didn't get a connection to the server: Serial.println("connection failed"); } if (client.connect(server, 80)) { Serial.println("connected"); // Make a HTTP request: client.print("GET /UpdateAvailability.php?Position="); client.print("3"); client.print("&&"); client.print("Available="); client.print(available3); client.println(" HTTP/1.1"); client.println("Host: 192.168.137.1"); client.println("Connection: close"); client.println(); client.stop(); } else { // if you didn't get a connection to the server: Serial.println("connection failed"); } if (client.connect(server, 80)) { Serial.println("connected"); // Make a HTTP request: client.print("GET /UpdateAvailability.php?Position="); client.print("4"); client.print("&&"); client.print("Available="); client.print(available4); client.println(" HTTP/1.1"); client.println("Host: 192.168.137.1"); client.println("Connection: close"); client.println(); client.stop(); } else { // if you didn't get a connection to the server: Serial.println("connection failed"); } if (client.connect(server, 80)) { Serial.println("connected"); // Make a HTTP request: client.print("GET /UpdateAvailability.php?Position="); client.print("5"); client.print("&&"); client.print("Available="); client.print(available5); client.println(" HTTP/1.1"); client.println("Host: 192.168.137.1"); client.println("Connection: close"); client.println(); client.stop(); } else { // if you didn't get a connection to the server: Serial.println("connection failed"); } } }</p>
