Conrad C-Control Pro Mega Series, Manual

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85 C-Control Pro Mega Series
© 2008 Conrad Electronic
Conditional Compiling
#ifdef symbol
...
#else // optional
...
#endif
It is possible to monitor which parts of the source texts are really being compiled. After a #ifdef
symbol instruction the following text is only compiled when symbol has also been defined by #define
symbol .
If there is an optional #else instruction then the source text will be processed after #else if the
symbol has not been defined.
Insertion of Text
#include path\file name
By this instruction a text file can be inserted into the source code.
Because of some restrictions in the Preprocessor a path within a #include instruction must not
contain any blank characters!
5.1.2.1 Predefined Symbols
In order to ease the work with different versions of the C-Control Pro series there are a number of
definitions which are set depending on target system and Compiler project options. These constants
can be called up by
#ifdef, #ifndef or #if .
Symbol Meaning
MEGA32 Configuration for Mega 32
MEGA128 Configuration for Mega 128
MEGA128CAN Configuration for Mega 128 CAN Bus
__DEBUG__ Debug Data will be created
__MAPFILE__ A Memory Layout will be computed
The following constants contain a string. It is sensible to use them in conjunction with text outputs.
Symbol Meaning
__DATE__ Current Date
__TIME__ Time of Compiling
__LINE__ Current Line in Sourcecode
__FILE__ Name of Current Source File
__FUNCTION__ Current Function Name