Heike C. Zimmerer wrote:
"Anton James Erasmus" <ant...@sentechsa.com> writes:
You can use the following MACROS and functions to get the
values in integer format. You can then display the date and
time in whatever format you desire.
#define COMPILE_HOUR (((__TIME__[0]-'0')*10) +
(__TIME__[1]-'0'))
#define COMPILE_MINUTE (((__TIME__[3]-'0')*10) +
(__TIME__[4]-'0'))
#define COMPILE_SECOND (((__TIME__[6]-'0')*10) +
(__TIME__[7]-'0'))
is __TIME__ guaranteed not to change between invocations? Else you may
end up at 1:00:00 where 1:59:59 would have been appropriate.
unsigned char GetCompileHour(void)
{
unsigned char hour=COMPILE_HOUR;
return(hour);
}
[...]
This all happens in the AVR where space is tight. I prefer a small
shell script which prepares a .h file containing all constants (date,
build #, hardware revision, etc) in their final representation.
Note that if you declare these functions "static inline", they will
avoid the function call overhead and some space - the compiler will
reduce them to a single "ldi" instruction. It's still not quite as
compact as a compiled string, but it's an improvement.
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