control the arduino from matlab

hi im doing project for my study its about pir sensore and servo motor i do it for arduino and its ready and work but my colleg want us to link the arduino with matlab and control the arduino bord from matlab like manual control and digital plz help me i dont understand any thing in matlab plz help my arduino code is :#include Servo myServo; int servopos = 0; int motionPin = 4; int Led = 8; void setup() { myServo.attach(9); myServo.write(0); Serial.begin(9600); pinMode (motionPin,INPUT); pinMode(Led,OUTPUT); } void loop() { int readValue = digitalRead(motionPin); if(readValue == 1){ OpenDoor(); digitalWrite(Led,HIGH); Serial.print">Serial.print (digitalRead(motionPin)); Serial.println(" ON "); delay(5000); } else{ CloseDoor(); digitalWrite(Led,LOW); Serial.print (digitalRead(motionPin)); Serial.println(" OFF "); } } void OpenDoor() { while(servopos <110){ servopos++; myServo.write(servopos)">myServo.write(servopos); delay(10); } } void CloseDoor() { while(servopos >0){ servopos--; myServo.write(servopos); delay(10); } }

[Haitham Abdalhafeez]

i do these plz help it didnt work

a = arduino('COM5','UNO','Libraries','Servo')

my_servo = servo(a,'d9')

writePosition(my_servo,0)

writeDigitalPin(a,'d8',0)

motionDetected = readDigitalPin(a, 'd4')

disp(motionDetected);

if motionDetected

fprintf('Motion detected on %s\n', datestr(now));\

writePosition(my_servo,0.61);

writDigitalPin(a,'d13',1);

delay (5000);

else

fprintf('Motion detected off %s\n', datestr(now));

writePosition(my_servo,0);

writDigitalPin(a,'d13',0);

delay (20);

pause

end

end