Thread safe printf?

JeGy wrote:
> Hi,
>
> does anyone here know
> if the IAR AVR C-compiler sprintf() and associated functions
> are thread safe in in multi-tasking, e.i. FreeRTOS?
>
> Regards
>
> Jens

Sorry I didn't think of checking this when you first posted.  I checked the 
source, none of the printf variants in the IAR libraries are thread safe, 
this includes sprintf.

-- 
Scott

"Not Really Me" <scott@validatedQWERTYsoftware.XYZZY.com> wrote in message 
news:6r9q9gF5k0vU1@mid.individual.net...
> JeGy wrote:
>> Hi,
>>
>> does anyone here know
>> if the IAR AVR C-compiler sprintf() and associated functions
>> are thread safe in in multi-tasking, e.i. FreeRTOS?
>>
>> Regards
>>
>> Jens
>
> Sorry I didn't think of checking this when you first posted.  I checked 
> the source, none of the printf variants in the IAR libraries are thread 
> safe, this includes sprintf.

According to their AVR compiler documentation their sprintf() implementation 
is thread safe - so it is interesting if your inspection shows otherwise.

The FreeRTOS download includes a mini implementation of sprintf() that is 
thread safe.  I normally use that regardless as it uses much less stack than 
standard library variants.

-- 
Regards,
Richard.

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