[Solved] Array of structs or pointer indexing ... Options / Best practice?

Projects Programming
31

AWOL:

 { "PVCurrent", PVCurrent },

A preprocessor stringify operator in a macro could help here.

As AWOL suggests, the table of variables/names could be done with a macro like this:

#define MAKE_VAR(v) #v, v

xVar vals [] = {
  { MAKE_VAR (BatVolts) },
  { MAKE_VAR (ACVolts) },
  { MAKE_VAR (WindSpeed) },
  { MAKE_VAR (PVCurrent) },
};

Now you only have to type the variable name once. The lines expand out to what I had before. The above was for the "references" version, this is for the pointers version:

#define MAKE_VAR(v) #v, &v

xVar vals [] = {
  { MAKE_VAR (BatVolts) },
  { MAKE_VAR (ACVolts) },
  { MAKE_VAR (WindSpeed) },
  { MAKE_VAR (PVCurrent) },
};