[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [avr-gcc-list] [Bug] Initialization for _delay_loop_2 Optimized Out

From: Joerg Wunsch
Subject: Re: [avr-gcc-list] [Bug] Initialization for _delay_loop_2 Optimized Out
Date: Thu, 24 Jul 2003 11:53:31 +0200 (MET DST)

As "Dave Hansen" <address@hidden> wrote:

>#define CLOCKS_PER_US   ((U16)(OSC_FREQ/1000000))
>#define CLOCKS_PER_LOOP 4

You remember that all these calculations are done using the `int' data
type, i. e. a 16-bit one, unless you force it to become long, do you?
So unless your OSC_FREQ macro has an `L' added somewhere, the above
division might become 0.

>static inline void
>my_delay_loop(unsigned int __count)

Identifiers with leading underscores are reserved (for ``the
implementation'') by the C standard.  Please stay away from them
inside your application, or you might risk a name clash with the
compiler or library.
J"org Wunsch                                           Unix support engineer
address@hidden        http://www.interface-systems.de/~j/

reply via email to

[Prev in Thread] Current Thread [Next in Thread]