Problem in Adafruit HMC5883L mega sensor code

hey,

i have bought gy-271 magnetometer sensor , connected arduino uno board.
i used adafruit hmc5883l library! here

when run code , displays sensor information , not values

using print statements , backpropagating found

• in megasenosr example code , problem with  getevent(), function control  never returned function
  

code: [select]

void loop(void)
{
  /* new sensor event */
  sensors_event_t event; // never returned fun
  mag.getevent(&event);
 
  /* display results (magnetic vector values in micro-tesla (ut)) */
  serial.print("x: "); serial.print(event.magnetic.x); serial.print("  ");
  serial.print("y: "); serial.print(event.magnetic.y); serial.print("  ");
  serial.print("z: "); serial.print(event.magnetic.z); serial.print("  ");serial.println("ut");

[/li]

• going , looking @ getevent(), found fun read() never returned control

code: [select]


bool adafruit_hmc5883_unified::getevent(sensors_event_t *event) {
  /* clear event */
  memset(event, 0, sizeof(sensors_event_t));

  /* read new data */
serial.println("going read data...");

  read();//never returned here
serial.println("read data...");
 
  event->version   = sizeof(sensors_event_t);
  event->sensor_id = _sensorid;
  event->type      = sensor_type_magnetic_field;
  event->timestamp = 0;
  event->magnetic.x = _magdata.x / _hmc5883_gauss_lsb_xy * sensors_gauss_to_microtesla;
  event->magnetic.y = _magdata.y / _hmc5883_gauss_lsb_xy * sensors_gauss_to_microtesla;
  event->magnetic.z = _magdata.z / _hmc5883_gauss_lsb_z * sensors_gauss_to_microtesla;
 
  return true;
}


[/li]

• going bak read function, found function never escaped out of "while(wire.available() < 6);"

code: [select]

void adafruit_hmc5883_unified::read()
{
  // read magnetometer
serial.println("reading data 1 ...");

  wire.begintransmission((byte)hmc5883_address_mag);
serial.println("read data 2...");

  #if arduino >= 100
    wire.write(hmc5883_register_mag_out_x_h_m);
serial.println("read data 3...");

  #else
    wire.send(hmc5883_register_mag_out_x_h_m);
serial.println("read data4...");

  #endif
  wire.endtransmission();
serial.println("read data 5...");

  wire.requestfrom((byte)hmc5883_address_mag, (byte)6);
serial.println("read data 6...");

 
  // wait around until enough data available
  while(wire.available() < 6); // never rerturned here


serial.println("read data  7...");


  // note high before low (different accel) 
[/code[/li]
[/list]

when removed while loop , code started working values remained constant when keep changing position of sensor

seems have been lot safer them add timeout on code , return error code.

i'd check connections on sensor.

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