Marc,

i could not follow your last instruction, i couldn´t figure out where and how to do what you suggested me. I´m complete noob with openSuse and Proview enviroments.

the good news is that at this point, my project communication with arduino is working properly. the only difference between the project that I tested at the beginning and this last version is that the last one has 4 analog channel inputs added and configured in the proview project. that condition seems to fix my issue with IO comms stalling.