Telemetry from APM2 to mission planner via UDP - mission planner says link is connected but link lost immediately

@Kolbasz9 wrote:

Hi,

I'd like to ask your help because I'm so stucked in with APM I cannot figure out what the mission planner needs to receive from it to being properly connected.

What I do is have a raspberry connected to APM2 via telemetry where a py script reads out the serial and sends it to the mission planner to UDP/14550. Also the packages sent back by mission planner to the port I send the packets from I wrote back to the serial:

def tty2UDP():
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
while(1):
line = ser.readline()
if (line != ''):
sock.sendto(line, ( GSC_address, 14550 ))
print ' message sent to GSC '
else:
print ' no output to GSC '

        data, addr = sock.recvfrom(1024)
        if (data !=''):
            print 'received message: ', data
            ser.write(data)
        else:
            print 'no input'
        ser.close()
        exit -1

#------------------------------------------------------------------------------------------------------------

ser = serial.Serial('/dev/ttyUSB0', 57600, timeout=2, xonxoff=False, rtscts=False, dsrdtr=False)
ser.flushInput()
ser.flushOutput()

tty2UDP()

Mission planner sometimes says it is connected but a seconds later it says link is down. I saw the messages from APM to delivered to Mission planner with wireshark - parameters like position, informations about servos, etc can be read out.

I'd appreciate any constructive advise, please! Image may be NSFW.
Clik here to view. Frankly I would not like to start using python mavlink bindings to do everything from scratch.

Thank you in advance

Cheers

Peter

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