I suppose you use a old lwIP release. Can you tell us which one you use? Is 
your release provided by any company, or do you take it from the Savannah web 
site ?
 
 
  
====================================
Frédéric BERNON 
HYMATOM SA 
Chef de projet informatique 
Microsoft Certified Professional 
Tél. : +33 (0)4-67-87-61-10 
Fax. : +33 (0)4-67-70-85-44 
Email : [email protected] 
Web Site : http://www.hymatom.fr <http://www.hymatom.fr/>  

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P Avant d'imprimer, penser à l'environnement

        -----Message d'origine-----
        De : [email protected] 
[mailto:[email protected]] De la part de 
HM2
        Envoyé : lundi 27 avril 2009 12:06
        À : Mailing list for lwIP users
        Objet : [lwip-users] Examples/Documentation Incorrect Timeout Code
        
        
        I think there is a mistake in the examples and documentation.
        There are many places where timeouts are given as below: 
        

        if ( (clock()-last_arp_time) >= (ARP_TMR_INTERVAL * CLOCK_MS) ) 
        
        Assuming that clock() and last_arp_time are given as ticks,
        and assuming that ARP_TMR_INTERVAL is going to be given in mSec, 
        and CLOCK_MS is the number of mSec/tick, then the above is incorrect. 
        
        The units would be: (ticks-ticks = mSec * mSec/Tick)     That's wrong. 
        
        The correct formula should be: 

        if ( (clock()-last_arp_time) >= (ARP_TMR_INTERVAL / CLOCK_MS) ) 
        
        The units are: (ticks-ticks = mSec * ticks/mSec)  or (ticks = ticks)
        
        Chris.

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