Tobias Müller - 2010-02-16

Hello,

I successfully created an external library from a C source for C166.

Basically it is running!

Currently I have the following problem. I was not able to use a constant array with initial values that is defined in the C source. It seems that CoDeSys is pointing to a different memory address?!

The following does not work:

\#pragma class hc=NCONST
huge static const int aiTemp[] = {0, 11, 22, 33};
\#pragma default_attributes

If e.g. aiTemp[2] is read the result is not "22"!

A single global constant variable is working:

huge static const iTemp = 55;

I use the following classes file:

CLASSES
(
  FUNCTABLE (40000h to 44BFFh),
  CINITROM
  CPROGRAM 
  NCONST       
  SHAREDCLIB
  SHAREDRTLIB (4C00h to 4FFFFh),
  CNEAR
  CUSTACK (120000H to 127FFFH)
)

Functable class contain the following:

huge static const LibDesc ld[512] = { ... };
huge static unsigned long const pLibCodeInit[] = {...};

Does anyone know what is needed to use arrays in CoDeSys V2.3 with inital values defined in C.

Best regards

Tobias Müller