MATLAB Answers

Nils Henke

Nils Henke (view profile)

0

Error occurred while executing External Mode MEX-file 'ext_comm': ExtTargetPktPending() call failed while checking for target pkt

Asked by Nils Henke

Nils Henke (view profile)

on 19 Aug 2015
Latest activity Edited by serhat çetin

serhat çetin (view profile)

on 22 Apr 2019
For a hardware in the loop test I have my simulation running in external mode on a raspberry pi. The raspberry gets information via the udp receive block from a WAGO PLC unit. I've tested the udp signals in a seperate simulink file and it worked properly. Same thing for the simulation: There is no problem in external mode when I simulate the udp signals with a constant value and a slider gain block. When I combine both files and want to give the udp receive values to the simulation my simulink is not starting and i get the error message above.
I have two udp receive blocks, one is receiving a uint16 and the other one a bool value. When i insert only the uint16 value the simulation is running very slow so i think it is a problem to use the sampled bool value. Could it be a problem that the performance of the raspberry pi is to low or that there is not enough RAM? I wanted to try it with a sample and hold block to generate a signal which is more continuous but i couldn't get the block run fine. Would that be a solution?
I use the ode1 due to the fact that this is the only solver which runs with a good performance with my udp receive uint16 value. Would it be better to use the discrete solver for that type of application? I haven't tried that so far because I have a lot of continuous functions in my simulation which i would have to transfer to discrete ones.

  4 Comments

Show 1 older comment
Praveen Manupati

Praveen Manupati (view profile)

2016 年 8 月 4 日
Hi Nils
Did you find solution to this problem, I am facing the same problem when running code generated on target hardware.
Noor Zeid

Noor Zeid (view profile)

on 22 Aug 2016
Hi I have the same problem, if you found a solution please email me nozeid@gmail.com thanks
ashwinee jadhao

ashwinee jadhao (view profile)

2019 年 2 月 13 日
I am getting same error
Error occurred while executing External Mode MEX-file 'ext_comm': ExtTargetPktPending() call failed while checking for target pkt
but I am using C2000 boards. when I dump code into Transmitting C2000 and then after dump Code into receiving C2000. then automatically my transmiting side simulink shows this error and terminate simulation

Sign in to comment.

Tags

3 Answers

Pavel Roslovets

Pavel Roslovets (view profile)

回答者: Pavel Roslovets

Pavel Roslovets (view profile)

2016 年 1 月 13 日

Please check this answer http://www.mathworks.com/matlabcentral/answers/126713#answer_205985

  0 Comments

Sign in to comment.

Noor Zeid

Noor Zeid (view profile)

Answer by Noor Zeid

Noor Zeid (view profile)

on 5 Mar 2017

Hi I have the same problem, if you found a solution please email me nozeid@gmail.com thanks

  0 Comments

Sign in to comment.

serhat çetin

serhat çetin (view profile)

Answer by serhat çetin

serhat çetin (view profile)

on 20 Apr 2019
Edited by serhat çetin

serhat çetin (view profile)

on 22 Apr 2019

1- Check the baundrate(from device manager)
on the command window;
2-
>>codertarget.arduinobase.registry.setBaudRate('untitled',9600)
untitled is sample simulink folder name, write the what your folder name.
9600 is the sample baundrate, write your baundrate.
check the baundrate:
>>codertarget.arduinobase.registry.setBaudRate('untitled')
then connect external mode...
Best regards

  0 Comments

Sign in to comment.

Sign in to answer this question.