Problème de connection avec le arduino uno

Bonjour Arduiniens!

J’ai un petit problème de connection: le avrdude fait des siennes! Voici l’erreur et le code:

Erreur:

Binary sketch size: 4492 bytes (of a 30720 byte maximum)
avrdude: stk500_getsync(): not in sync: resp=0x4a
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x6a

Code:

/* Ping))) Sensor

This sketch reads a PING))) ultrasonic rangefinder and returns the
distance to the closest object in range. To do this, it sends a pulse
to the sensor to initiate a reading, then listens for a pulse
to return. The length of the returning pulse is proportional to
the distance of the object from the sensor.

The circuit:

  • +V connection of the PING))) attached to +5V
  • GND connection of the PING))) attached to ground
  • SIG connection of the PING))) attached to digital pin 7

created 3 Nov 2008
by David A. Mellis
modified 30 Jun 2009
by Tom Igoe

This example code is in the public domain.

*/

// this constant won’t change. It’s the pin number
// of the sensor’s output:

#include <Servo.h>

// Create a Servo object for each servo
Servo servo1;

const int pingPin = 7;
int moyenne = 0;
int total = 0;
int index = 0;

int startbyte = 0;
int command = 0;

boolean ouvert = false;

void setup() {
// initialize serial communication:
Serial.begin(115200);
servo1.attach(5);
}

void loop()
{
// establish variables for duration of the ping,
// and the distance result in inches and centimeters:
long duration, cm;

if (Serial.available() >= 2) {
startbyte = Serial.read();
command = Serial.read();

if (command == 0) {
if (!ouvert) {
index = 0;
total = 0;
moyenne = 0;
}
servo1.write(0);
ouvert = true;
}
else if (command == 90) {
servo1.write(90);
ouvert = false;
}
}

if (ouvert) {
// The PING))) is triggered by a HIGH pulse of 2 or more microseconds.
// Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
pinMode(pingPin, OUTPUT);
digitalWrite(pingPin, LOW);
delayMicroseconds(2);
digitalWrite(pingPin, HIGH);
delayMicroseconds(5);
digitalWrite(pingPin, LOW);

// The same pin is used to read the signal from the PING))): a HIGH
// pulse whose duration is the time (in microseconds) from the sending
// of the ping to the reception of its echo off of an object.
pinMode(pingPin, INPUT);
duration = pulseIn(pingPin, HIGH);

// convert the time into a distance
cm = microsecondsToCentimeters(duration);
total = total + cm;
index++;

delay(10);

if(index == 10) {
moyenne = total / 10;
Serial.println(moyenne);
total = 0;
index = 0;
moyenne = 0;
}
}
else {
delay(25);
}
}

long microsecondsToCentimeters(long microseconds)
{
// The speed of sound is 340 m/s or 29 microseconds per centimeter.
// The ping travels out and back, so to find the distance of the
// object we take half of the distance travelled.
return microseconds / 29 / 2;
}

Je travaille sur un Ubuntu 10.04 LTS avec arduino 0022!

Sauriez-vous quoi faire pour m’Aider?

Merci!

VC