RE: [lwip-users] sys_timeout firing too often.

[Nick Thomas]

-----Original Message-----
From: address@hidden
[mailto:address@hidden Behalf
Of Kieran Mansley
Sent: 05 September 2008 12:18
To: Mailing list for lwIP users
Subject: Re: [lwip-users] sys_timeout firing too often.


On Fri, 2008-09-05 at 12:08 +0100, Nick Thomas wrote:

>> The msec_to_tick appears to overflow with a large number (like 5000) - or
am
>> I wrong.

> If that's the case then putting in a couple of brackets so the division
> happens before the multiplication would solve the problem.

>Kieran

OK, so it becomes:

//#define tick_to_msec(tick)    ((u32_t)((tick) * 1000 / time_ticks_per_sec()))
#define tick_to_msec(tick)      ((u32_t)(((tick) / time_ticks_per_sec()) * 
1000))

//#define msec_to_tick(msec)    ((clock_t)((msec) * time_ticks_per_sec() /
1000))
#define msec_to_tick(msec) ((clock_t)((msec) * (time_ticks_per_sec() /
1000)))

I will give that a go. Thanks.


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