Atmel CAVR-4 Manual De Usuario

CAVR-4

Predefined symbols

Reference Guide

●

The value (

m

) corresponding to the 

--memory_model

 option in use; where the 

value 1 corresponds to Tiny, the value 2 corresponds to Small, and the value 3 
corresponds to Large.

The 

_ _TID_ _

value is constructed as:

((t << 8) | (c << 4) | m)

You can extract the values as follows:

To find the value of the target identifier for the current compiler, execute:

printf("%ld",(__TID__ >> 8) & 0x7F)

Note: The use of 

_ _TID_ _

 is not recommended. We recommend that you use the 

symbols 

_ _ICCAVR_ _

 and 

_ _CORE_ _

 instead.

_ _TIME_ _

Current time.

Expands to the time of compilation in the form 

hh:mm:ss

.

_ _VER_ _

Compiler version number.

Expands to an integer representing the version number of the compiler. The value of the 
number is calculated in the following way:

(100 * the major version number + the minor version number)

The example below prints a message for version 3.34.

#if _ _VER_ _ == 334

#pragma message("Compiler version 3.34")

#endif

In this example, 

3

 is the major version number and 

34

 is the minor version number.

_ _VERSION_1_CALLS_ _

Calling convention.

Expands to 1 if the used calling convention is the old calling convention used in 
compiler version 1.x. If zero, the new calling convention is used.

t = (_ _TID_ _ >> 8) & 0x7F;

/* target identifier */

c = (_ _TID_ _ >> 4) & 0x0F;

/* cpu core */

m = _ _TID_ _ & 0x0F;

/* memory model */