Arduino Uno, Mavlink and Serial.print()

[André Roy]

Hi all,

I'm very new to MAVLink.  I've got the jist of how it works and started experimenting sending/receiving messages with my UNO.  I've found that when including <mavlink.h> it appears to break the use of Serial.print() for debugging.  Is this normal?  Here's my code:

#include <mavlink.h>
#include <serial.h>
void setup()
{
 
  Serial.begin(57600);
  Serial.println("test");
 
}
void loop()
{

}

The code will not print my debugging statements.  I can also get the following example code to compile, so I know the compiler is gaining access to mavlink.h. It still won't print via Serial.

#include <mavlink.h>
#include <serial.h>
void setup()
{
 
  Serial.begin(57600);
  Serial.println("test");
 
  Serial.println(MAVLINK_MAX_PACKET_LEN); 
   mavlink_message_t msg;  
   mavlink_msg_heartbeat_pack(100, 200, &msg, MAV_FIXED_WING, MAV_AUTOPILOT_GENERIC);  
   uint8_t buf[MAVLINK_MAX_PACKET_LEN];  
   uint16_t len = mavlink_msg_to_send_buffer(buf,&msg);

}
void loop()
{
  Serial.println("test");
}


I'm wondering if the ATMEG chip is suffering from a runtime error.  I don't understand why my UNO won't print my debug statements.  Anyone else experience this?

[André Roy]

yeah, I just confirmed that including mavlink.h from my mavlink library causes a runtime error.  I confirmed by removing all the code and trying to blink an LED.  It works when mavlink isn't included:

#include <mavlink.h>
void setup()
{
  pinMode(A5,OUTPUT);
  digitalWrite(A5,HIGH);
}
void loop()
{
}

So, I have to figure what's going on...  Anyone else ever encounter this?

--
André

[Jason Short]

Sounds like your out of ram. 

Jason

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[André Roy]

Hmm, that sounds about right.

Is there a guide somewhere to producing your own headers and using it with Arduino?