Help with coding pointer to tables

Projects Programming
1

Hi,
I would need some help for the folowing problem.

I need to create a function that initialize a device (temperature measure).
It has to return an error code ( OK or the type of error) - (easy stuff here)
But it has also to modify (and thus "return" a short table - the address of the device byte[7]).

I have difficulties in coding how to send the pointer to the table and how to send back the result ;

If coded in the setup it works fine but could not find a way to make it work in an external function.

Thank you

2

Posting your code and the eventual circuit is the only way to make others understand what you are struggling with :wink:
Maybe in the arduino reference page

section "Pointer Access Operators" should be helpful.
Good luck :wink:

3

Thanks,

I have read the reference and also some C++.
I did work (well) with pointers for single variables but not with tables.
The reference did not helped me to solve the problem.
I have at least three versions of code each with different errors (long listings) so the question I am asking is
"How to modify an external table ( wich contains for example a MAC adress) in a function and how to pass the pointer as argument. a practical example would be usefull for me.
It may eventually prove simple but my experience does not allowed me to advance alone.

Thank you for your help

4

I am having trouble understanding what you are trying to do, sorry :pensive:
Could this webpage give you any idea?

The website has a buil-in onlnine compiler, btw. You can use it to try out some code without a board.
Sorry again

5

Hi,

Finally I managed to make it work. In fact very simple STUPID errors of a beginner. Thank for the link.

6

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