![]() ![]() Whenever a macro name is encountered by the compiler, it replaces the name with the definition of the macro. Projects created using internal part support will generally define the symbol _CODE_RED, and those created from SDK imported part support the symbol _MCUXPRESSO. A macro is a piece of code in a program that is replaced by the value of the macro. Macro replacement lists should be parenthesized. Macros can be of four types: Object-like Macros: When a macro is simply replaced by a value, then it is called as Object like Macro. ![]() When the name is used anywhere in the program, the macro value is replaced before the. Prefer inline or static functions to function-like macros and PRE02-C. A macro value in C replaces a part of a program with a value already defined by define directive. A macro in C language is a piece of code which has been assigned a name. This may include either family or device defines (or sometimes both). Parenthesize all parameter names in macro definitions. ![]() MCUXpresso IDE sits on top of the GCC compiler - so all of the standard GCC defines will be available to you to check, which will change depending on the options being passed into the compiler.īeyond that, depending upon the target MCU your project is configured for and whether this is provided by the "legacy" internal part support or by importing an SDK - a variety of defines will be available inside a project (either created from the new project wizard, or from the configuration of an imported example). In other words, define causes the compiler to go through the file, replacing every occurrence of macro-name with replacement-string. ![]()
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