arduino osc open frameworks, float conversion problem-sync issue?

advanced
#1

hi folks, i’m running an arduino ethernet with an polulu MinIMU-9 v2 (Gyro, Accelerometer, and Compass http://www.pololu.com/catalog/product/1268 and set it up with this example code https://github.com/pololu/MinIMU-9-Arduino-AHRS. Additional I’m using Z_OSC https://github.com/djiamnot/Z-OSCan arduino library to send and receive osc commands. I modified the OpenFrameworks receiveOSC example to get the data in but i have a small problem with the output:

I just try to translate this code which was written for serial output at the arduino:

  
  
Serial.print("!");  
 Serial.print("ANG:");  
      Serial.print(ToDeg(roll));  
      Serial.print(",");  
      Serial.print(ToDeg(pitch));  
      Serial.print(",");  
      Serial.print(ToDeg(yaw));

ToDeg was defined earlier:
#define ToDeg(x) ((x)*57.2957795131) // *180/pi

And at the serial monitor in Arduino i receive the following:

!ANG:0.15,0.13,66.71
!ANG:0.28,0.07,66.70
!ANG:0.31,0.11,66.71
!ANG:0.41,0.15,66.72

And exactly these numbers i want to have in open frameworks, so i have the following function in Arduino

  
  
void sendProcess(){  
  Z_OSCMessage message;    
  message.setAddress(destIp,destPort);  
  message.setZ_OSCMessage(oscAdr1,"fff",ToDeg(roll),ToDeg(pitch),ToDeg(yaw));  
  client.send(&message);  
}

fff stands for three float numbers, and i double checked that roll, pitch and yaw were also declared as floats.
I start it right after the original printdata() function:

  
  
...  
...  
...  
    // Calculations...  
    Matrix_update();   
    Normalize();  
    Drift_correction();  
    Euler_angles();  
    // ***  
  
    printdata();  
    sendProcess();  
  }

in open frameworks i read them out as floats:

  
  
void testApp::update(){  
  
	// hide old messages  
	for(int i = 0; i < NUM_MSG_STRINGS; i++){  
		if(timers[i] < ofGetElapsedTimef()){  
			msg_strings[i] = "";  
		}  
	}  
  
	// check for waiting messages  
	while(receiver.hasWaitingMessages()){  
		// get the next message  
		ofxOscMessage m;  
		receiver.getNextMessage(&m);  
  
		  
		if(m.getAddress() == "/head/direction"){  
			roll= m.getArgAsFloat(0);  
			pitch= m.getArgAsFloat(1);  
			yaw= m.getArgAsFloat(2);  
		}  
			  
	}  
}

now when i print them i get something like that:

-1.3445464e+44
or 0
or
-3.456553e-23

i don’t move the arduino board.
How do i get the right numbers?
Does it have something to do with the clock of the devices?

the serial monitor at the arduino software runs with 115200 baud how could i translate that into the osc open frameworks application?
Hope you can help me,

Happy Christmas, Nixon

#2

yeah got it i forgot the & in the sendProcess() function:

changed it to:

  
  
void sendProcess(){  
    
  float oscRoll=ToDeg(roll);  
  float oscPitch=ToDeg(pitch);  
  float oscYaw=ToDeg(yaw);  
    
  Z_OSCMessage message;    
  message.setAddress(destIp,destPort);  
  message.setZ_OSCMessage(oscAdr1,"fff",&oscRoll,&oscPitch,&oscYaw);  
  client.send(&message);  
}

hope this helps somebody, if you want to get the direction you’re head or something different is looking this could be the way to go, I’m going to switch to a wifi shield later.