for QT and c ++ lovers -tutorial- (...sort off...)

Here we are now at the crucial point .... so far I have shown you the steps that everyone more or less go through to get to the solution we are looking for ..... and here we finally realize that the best place to search answers is still the Lcnc code .... unfortunately, patience and a job of building the puzzle are required .... also because if it is true that since 2019 someone has tried to create a map of the classes and the Lcnc headers .... it is true that understanding everything on the fly is not trivial but above all the master code is constantly updated .... the files that are important for sharing SHEMEM, however, always remain hal.he hal_lib.c which shows its implementation .... I am attaching both for easy reading .... having read the previous notes theoretically, you won't have much trouble understanding these files and understanding that this is the crux of the matter .... now it's time to create a nice writing implementation projects and the ttura .... I already notice that I will be lazy and will not implement a Qthread to do the example readings .... however I am attaching some interesting code .... in the next post ... see you later

 

Hi
may be this would be interesting for you.
Shared mem into HAL with Pins reversed IN <==> OUT.
 

sorry at all but is a real full time for me .... udoS post an interest implement at grotius way .... pheraps after 1 month of test I discover that using hal.h and hal_lib.c give some problem (rarely) with semaphore .... so gui can crash if QT side is not implement a sort of semaphore ....so I work on it. See you later ....

REALLY LAST IMPORTANT THINGS FOR NO WASTE TIME .... obvius but if long time not operate on these can be forgot:

hal_priv.h  from your installation need to be copyed into your c++project folder (rt-preempt) .... but need to be the same of your install .....

I loose 4 day because upgrade lcnc and forgot copy hal_priv.h in mine project folder .... result od these error, all go but no one pin was redable from my app .... (all other, as ethercat, ethernet/IP it work perfect ..... if outside Lcnc).

regards