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Discussion Groups | TMS320C28x | sprintf function

Technical discussions about the TI C28x DSPs (including the C2810, C2811, C2812, F2801, F2806, F2808, F2810,, F2811, F2812, R2811 and R2812).

  

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sprintf function - eran...@gmail.com - May 14 20:15:39 2008



Hi all,

I'm using the sprintf function like:
Result = sprintf(strFloat,"%3.3f",stInterpVars.fResult);

Where:
Result - number of copeid charectars.
strFloat - destination, type char[].
stInterpVars.fResult - source, type double.

The function is working, I got the correct result in destination, but there is a memory leak.
The function overwrite other variable.

Does someone know what happend? or anyone handle with that function?
Thanks

------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables developers to start building
applications based on the OMAP35x architecture:http://www.DSPRelated.com/omap35x
You can post a message or access and search the archives of this group on DSPRelated.com:
http://www.dsprelated.com/groups/c28x/1.php

_____________________________________


(You need to be a member of c28x -- send a blank email to c28x-subscribe@yahoogroups.com )

Réf. : sprintf function - Alain SALMETOZ - May 16 8:57:04 2008

Are you sure the strFloat variable has enough space reserved ?
If you typedef as a char[], it means char*, so no memory allocated to your=
=20
string.

Veuillez r=E9pondre =E0 e...@gmail.com
Envoy=E9 par :    c...@yahoogroups.com
Pour :  c...@yahoogroups.com
cc :=20=20=20=20=20

Objet : [c28x] sprintf function

Hi all,

I'm using the sprintf function like:
Result =3D sprintf(strFloat,"%3.3f",stInterpVars.fResult);

Where:
Result - number of copeid charectars.
strFloat - destination, type char[].
stInterpVars.fResult - source, type double.

The function is working, I got the correct result in destination, but=20
there is a memory leak. The function overwrite other variable.

Does someone know what happend? or anyone handle with that function?
Thanks

------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables develope=
rs to start building applications based on the OMAP35x architecture: http:/=
/www.DSPRelated.com/omap35x
You can post a message or access and search the archives of this group on D=
SPRelated.com:
http://www.dsprelated.com/groups/c28x/1.php

_____________________________________


(You need to be a member of c28x -- send a blank email to c28x-subscribe@yahoogroups.com )

=?ISO-8859-1?Q?Re:_R=E9f._:__sprintf_function?= - Eran Tech - May 19 8:13:28 2008

Hi,

I typed the strFloat as char[32], and the result i want to get is less then
10 charecters (%3.3f).
I know that the sprinf needs to allocate memory, and in my DSP/BIOS i'm not
using a heap.
Is the unprototype heap couse this problam?

Thanks.

On Fri, May 16, 2008 at 9:01 AM, Alain SALMETOZ <a...@mgeups.com>
wrote:

>   Are you sure the strFloat variable has enough space reserved ?
> If you typedef as a char[], it means char*, so no memory allocated to your
> string.
>
> Veuillez répondre à e...@gmail.com <erantec%40gmail.com>
> Envoyé par : c...@yahoogroups.com <c28x%40yahoogroups.com>
> Pour : c...@yahoogroups.com <c28x%40yahoogroups.com>
> cc :
>
> Objet : [c28x] sprintf function
>
> Hi all,
>
> I'm using the sprintf function like:
> Result = sprintf(strFloat,"%3.3f",stInterpVars.fResult);
>
> Where:
> Result - number of copeid charectars.
> strFloat - destination, type char[].
> stInterpVars.fResult - source, type double.
>
> The function is working, I got the correct result in destination, but
> there is a memory leak. The function overwrite other variable.
>
> Does someone know what happend? or anyone handle with that function?
> Thanks
>


(You need to be a member of c28x -- send a blank email to c28x-subscribe@yahoogroups.com )

Re: sprintf function - Alain SALMETOZ - May 19 8:13:58 2008

yes, you need to allcoate from 0x100 to 0x300 words to heap to all=20
printf() function to work.

Pour :  "Alain SALMETOZ" <a...@mgeups.com>
cc :    c...@yahoogroups.com=20

Objet : Re: R=E9f. : [c28x] sprintf function

Hi,
=20
I typed the strFloat as char[32], and the result i want to get is less=20
then 10 charecters (%3.3f).
I know that the sprinf needs to allocate memory, and in my DSP/BIOS i'm=20
not using a heap.
Is the unprototype heap couse this problam?
=20
Thanks.

On Fri, May 16, 2008 at 9:01 AM, Alain SALMETOZ <a...@mgeups.com
> wrote:
Are you sure the strFloat variable has enough space reserved ?
If you typedef as a char[], it means char*, so no memory allocated to your=
=20

string.

Veuillez r=E9pondre =E0 e...@gmail.com
Envoy=E9 par : c...@yahoogroups.com
Pour : c...@yahoogroups.com
cc :=20

Objet : [c28x] sprintf function=20
Hi all,

I'm using the sprintf function like:
Result =3D sprintf(strFloat,"%3.3f",stInterpVars.fResult);

Where:
Result - number of copeid charectars.
strFloat - destination, type char[].
stInterpVars.fResult - source, type double.

The function is working, I got the correct result in destination, but=20
there is a memory leak. The function overwrite other variable.

Does someone know what happend? or anyone handle with that function?
Thanks
=20

------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables develope=
rs to start building applications based on the OMAP35x architecture: http:/=
/www.DSPRelated.com/omap35x
You can post a message or access and search the archives of this group on D=
SPRelated.com:
http://www.dsprelated.com/groups/c28x/1.php

_____________________________________


(You need to be a member of c28x -- send a blank email to c28x-subscribe@yahoogroups.com )

Re: sprintf function - Eran Tech - May 19 8:14:57 2008

Unfortunately even when I add a 0x300 size of heap, the problem still
remain.
but as I said befor the function is working but I got a proble, with
different variable.

On Mon, May 19, 2008 at 9:26 AM, Alain SALMETOZ <A...@mgeups.com>
wrote:

>
> yes, you need to allcoate from 0x100 to 0x300 words to heap to all printf=
()
> function to work.
> Pour :        "Alain SALMETOZ" <a...@mgeups.com>
> cc :        c...@yahoogroups.com
>
> Objet :        Re: R=E9f. : [c28x] sprintf function
>
> Hi,
>
> I typed the strFloat as char[32], and the result i want to get is less th=
en
> 10 charecters (%3.3f).
> I know that the sprinf needs to allocate memory, and in my DSP/BIOS i'm n=
ot
> using a heap.
> Is the unprototype heap couse this problam?
>
> Thanks.
>
> On Fri, May 16, 2008 at 9:01 AM, Alain SALMETOZ <*
> a...@mgeups.com* <a...@mgeups.com>> wrote:
> Are you sure the strFloat variable has enough space reserved ?
> If you typedef as a char[], it means char*, so no memory allocated to you=
r
> string.
>
> Veuillez r=E9pondre =E0 *e...@gmail.com* <erantec%40gmail.com>
> Envoy=E9 par : *c...@yahoogroups.com* <c28x%40yahoogroups.com>
> Pour : *c...@yahoogroups.com* <c28x%40yahoogroups.com>
> cc :
>
> Objet : [c28x] sprintf function
> Hi all,
>
> I'm using the sprintf function like:
> Result =3D sprintf(strFloat,"%3.3f",stInterpVars.fResult);
>
> Where:
> Result - number of copeid charectars.
> strFloat - destination, type char[].
> stInterpVars.fResult - source, type double.
>
> The function is working, I got the correct result in destination, but
> there is a memory leak. The function overwrite other variable.
>
> Does someone know what happend? or anyone handle with that function?
> Thanks
>
>=20
>
------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables develope=
rs to start building applications based on the OMAP35x architecture: http:/=
/www.DSPRelated.com/omap35x
You can post a message or access and search the archives of this group on D=
SPRelated.com:
http://www.dsprelated.com/groups/c28x/1.php

_____________________________________


(You need to be a member of c28x -- send a blank email to c28x-subscribe@yahoogroups.com )

Re: sprintf function - Alain SALMETOZ - May 20 7:38:06 2008

Please, verify that you have assigned the esysmem section to a RAM block=20
as below.
Note : If you are using LARGE memory model, esysmem is used instead of=20
sysmem.

  .esysmem                      : > EXTRAM2,            PAGE =3D 1

>From documentation:
The .esysmem section is a uninitialized section that reserves space for=20
dynamic memory allocation.=20
The reserved space is used by far malloc functions.
If no far malloc functions are used, the size of the section remains 0.

Envoy=E9 par :    c...@yahoogroups.com
Pour :  "Alain SALMETOZ" <A...@mgeups.com>
cc :    c...@yahoogroups.com=20

Objet : Re: [c28x] sprintf function

Unfortunately even when I add a 0x300 size of heap, the problem still
remain.
but as I said befor the function is working but I got a proble, with
different variable.

On Mon, May 19, 2008 at 9:26 AM, Alain SALMETOZ=20
<A...@mgeups.com>
wrote:

>
> yes, you need to allcoate from 0x100 to 0x300 words to heap to all=20
printf()
> function to work.
> Pour :        "Alain SALMETOZ" <a...@mgeups.com>
> cc :        c...@yahoogroups.com
>
> Objet :        Re: R=E9f. : [c28x] sprintf function
>
> Hi,
>
> I typed the strFloat as char[32], and the result i want to get is less=20
then
> 10 charecters (%3.3f).
> I know that the sprinf needs to allocate memory, and in my DSP/BIOS i'm=20
not
> using a heap.
> Is the unprototype heap couse this problam?
>
> Thanks.
>
> On Fri, May 16, 2008 at 9:01 AM, Alain SALMETOZ <*
> a...@mgeups.com* <a...@mgeups.com>> wrote:
> Are you sure the strFloat variable has enough space reserved ?
> If you typedef as a char[], it means char*, so no memory allocated to=20
your
> string.
>
> Veuillez r=E9pondre =E0 *e...@gmail.com* <erantec%40gmail.com>
> Envoy=E9 par : *c...@yahoogroups.com* <c28x%40yahoogroups.com>
> Pour : *c...@yahoogroups.com* <c28x%40yahoogroups.com>
> cc :
>
> Objet : [c28x] sprintf function
> Hi all,
>
> I'm using the sprintf function like:
> Result =3D sprintf(strFloat,"%3.3f",stInterpVars.fResult);
>
> Where:
> Result - number of copeid charectars.
> strFloat - destination, type char[].
> stInterpVars.fResult - source, type double.
>
> The function is working, I got the correct result in destination, but
> there is a memory leak. The function overwrite other variable.
>
> Does someone know what happend? or anyone handle with that function?
> Thanks
>
>=20
>

------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables develope=
rs to start building applications based on the OMAP35x architecture: http:/=
/www.DSPRelated.com/omap35x
You can post a message or access and search the archives of this group on D=
SPRelated.com:
http://www.dsprelated.com/groups/c28x/1.php

_____________________________________


(You need to be a member of c28x -- send a blank email to c28x-subscribe@yahoogroups.com )

Re: sprintf function - Eran Tech - May 20 7:38:25 2008

SECTIONS
{
   /* Setup for "boot to SARAM" mode: 
      The codestart section (found in DSP28_CodeStartBranch.asm)
      re-directs execution to the start of user code.  */
/*   codestart        : > BEGIN,      PAGE = 0*/
/*** User Defined Sections ***/
   codestart        :> BEGIN_M0,       PAGE = 0   /* Used by file CodeStartBranch.asm */
   ramfuncs         :> L47SARAM        PAGE = 0  
   .adc_cal			:> L03SARAM        PAGE = 0
   SaramCode		:> L47SARAM		   PAGE = 0
   RecorderData     :> L47SARAM        PAGE = 0
   RecorderCode     :> SRAM            PAGE = 0 
   IoCode           :> SRAM            PAGE = 0
   IoData           :> L47SARAM        PAGE = 0
   DmaCode          :> L47SARAM        PAGE = 0
   DmaData          :> L47SARAM        PAGE = 0
   ServoCode        :> L03SARAM        PAGE = 0
   ServoData        :> L03SARAM        PAGE = 0
   Servo2Code       :> L47SARAM        PAGE = 0
   Servo2Data       :> L47SARAM        PAGE = 0
   DMARAML4 		:> L47SARAM        PAGE = 0
   SramCode         :> SRAM            PAGE = 0   
   LexCode			:> SRAM			   PAGE = 0	 
   
   CanIsrCode		:> L03SARAM		   PAGE = 0			
   pECanaMboxesData	:> L03SARAM		   PAGE = 0
   	 
   SramData         :> SRAMDATA        PAGE = 1
   /*   SaramCode		 :> MSARAM			PAGE = 1 */
}


(You need to be a member of c28x -- send a blank email to c28x-subscribe@yahoogroups.com )

Re: sprintf function - Alain SALMETOZ - May 20 7:39:22 2008


SECTIONS
{
   /* Setup for "boot to SARAM" mode: 
      The codestart section (found in DSP28_CodeStartBranch.asm)
      re-directs execution to the start of user code.  */
/*   codestart        : > BEGIN,      PAGE = 0*/
/*** User Defined Sections ***/
   codestart        :> BEGIN_M0,       PAGE = 0   /* Used by file CodeStartBranch.asm */
   ramfuncs         :> L47SARAM        PAGE = 0  
   .adc_cal			:> L03SARAM        PAGE = 0
   SaramCode		:> L47SARAM		   PAGE = 0
   RecorderData     :> L47SARAM        PAGE = 0
   RecorderCode     :> SRAM            PAGE = 0 
   IoCode           :> SRAM            PAGE = 0
   IoData           :> L47SARAM        PAGE = 0
   DmaCode          :> L47SARAM        PAGE = 0
   DmaData          :> L47SARAM        PAGE = 0
   ServoCode        :> L03SARAM        PAGE = 0
   ServoData        :> L03SARAM        PAGE = 0
   Servo2Code       :> L47SARAM        PAGE = 0
   Servo2Data       :> L47SARAM        PAGE = 0
   DMARAML4 		:> L47SARAM        PAGE = 0
   SramCode         :> SRAM            PAGE = 0   
   LexCode			:> SRAM			   PAGE = 0	 
   
   CanIsrCode		:> L03SARAM		   PAGE = 0			
   pECanaMboxesData	:> L03SARAM		   PAGE = 0
   	 
   SramData         :> SRAMDATA        PAGE = 1
   /*   SaramCode		 :> MSARAM			PAGE = 1 */
}


(You need to be a member of c28x -- send a blank email to c28x-subscribe@yahoogroups.com )