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The New Hotness

  • C Constants Aren’t Automatically Promoted

    Quick, what’s wrong with this code snippet…

    #define MAX_INTERVAL	(60*1000)

unsigned long int LoggedTime;
unsigned long int NowTime;

byte LogNeeded;

... snippage ...

LogNeeded = (NowTime >= (LoggedTime + MAX_INTERVAL));

    Yeah, that constant up there should look like this:

    #define MAX_INTERVAL (60*1000ul)

    Took me a while to figure that out. Again.