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help needed to edit at91sam7ex-256 mp3/aac player [1 Attachment]

Started by nixxterlid April 10, 2010
--- In A..., Pietro Maggi wrote:
>
> On Mon, Apr 12, 2010 at 12:21 PM, 42Bastian wrote:
>
> >
> >
> > Am 12.04.2010 11:10, schrieb nixxterlid:
> >
> > >
> > > anyway as i mentioned previously, i'm using olimex sam7-ex256 board.
> > > as my university project, i have to make the mp3 player using the board.
> > as for the tools, i'm using eclipse + yagarto tools chain.
> >
> > All in software ? Forget it. The 70MHz aren't enough for MP3.
> >
> > The encoding is out of reach, but the decoding is feasible.
> You can see both Atmel AN for an internet Radio that do the MP3 decoding on
> a AT91SAM7X (http://www.atmel.com/dyn/resources/prod_documents/doc6318.pdf)
> and this project: http://embdev.net/articles/ARM_MP3/AAC_Player
>
> regards
> Pietro
>
hi pietro,
i'm just doing a real simple mp3 player as long as the song from the SD card can be played on the board.
previously, it happen to play the song from the sd card. but after doing some corrections, it failed to execute as before.

reallly need advice and help.
thanks

Am 13.04.2010 03:54, schrieb nixxterlid:

> --- In A..., Pietro Maggi wrote:
>>
>> On Mon, Apr 12, 2010 at 12:21 PM, 42Bastian wrote:
>>
>>>
>>>
>>> Am 12.04.2010 11:10, schrieb nixxterlid:
>>>
>>>>
>>>> anyway as i mentioned previously, i'm using olimex sam7-ex256 board.
>>>> as my university project, i have to make the mp3 player using the board.
>>> as for the tools, i'm using eclipse + yagarto tools chain.
>>>
>>> All in software ? Forget it. The 70MHz aren't enough for MP3.
>>>
>>> The encoding is out of reach, but the decoding is feasible.
>> You can see both Atmel AN for an internet Radio that do the MP3 decoding on
>> a AT91SAM7X (http://www.atmel.com/dyn/resources/prod_documents/doc6318.pdf)
>> and this project: http://embdev.net/articles/ARM_MP3/AAC_Player

I stand corrected.

--
42Bastian
+
| http://www.sciopta.com
| Fastest direct message passing kernel.
| IEC61508 certified.
+
On Tue, Apr 13, 2010 at 3:54 AM, nixxterlid wrote:

> hi pietro,
> i'm just doing a real simple mp3 player as long as the song from the SD
> card can be played on the board.
> previously, it happen to play the song from the sd card. but after doing
> some corrections, it failed to execute as before.
>
> reallly need advice and help.
> thanks
>
> Hi,
"it failed to execute" isn't a valid information to use in a question. Get
back with some useful information and someone may help you.

If you started from a working condition and ended up with a not working
solution... just roll-back the changes, one at a time (source control
systems like svn are perfect for such a thing), and see what breaks it.

Regards
Pietro
i've roll back the changes i made but it didnt work as before. i've attached the source code that i've edited a bit, so as if you can take alokk and give a bit useful help/ guide and advice so that i can make the project work :p

--- In A..., Pietro Maggi wrote:
>
> On Tue, Apr 13, 2010 at 3:54 AM, nixxterlid wrote:
>
> > hi pietro,
> > i'm just doing a real simple mp3 player as long as the song from the SD
> > card can be played on the board.
> > previously, it happen to play the song from the sd card. but after doing
> > some corrections, it failed to execute as before.
> >
> > reallly need advice and help.
> > thanks
> >
> > Hi,
> "it failed to execute" isn't a valid information to use in a question. Get
> back with some useful information and someone may help you.
>
> If you started from a working condition and ended up with a not working
> solution... just roll-back the changes, one at a time (source control
> systems like svn are perfect for such a thing), and see what breaks it.
>
> Regards
> Pietro
>

--- In A..., 42Bastian wrote:
>
> Am 13.04.2010 03:54, schrieb nixxterlid:
>
> > --- In A..., Pietro Maggi wrote:
> >>
> >> On Mon, Apr 12, 2010 at 12:21 PM, 42Bastian wrote:
> >>
> >>>
> >>>
> >>> Am 12.04.2010 11:10, schrieb nixxterlid:
> >>>
> >>>>
> >>>> anyway as i mentioned previously, i'm using olimex sam7-ex256 board.
> >>>> as my university project, i have to make the mp3 player using the board.
> >>> as for the tools, i'm using eclipse + yagarto tools chain.
> >>>
> >>> All in software ? Forget it. The 70MHz aren't enough for MP3.
> >>>
> >>> The encoding is out of reach, but the decoding is feasible.
> >> You can see both Atmel AN for an internet Radio that do the MP3 decoding on
> >> a AT91SAM7X (http://www.atmel.com/dyn/resources/prod_documents/doc6318.pdf)
> >> and this project: http://embdev.net/articles/ARM_MP3/AAC_Player
>
> I stand corrected.

You admit you were wrong.
OK.
;-)
http://www.nxp.com/documents/application_note/AN10583.pdf

It's doable, but not for the beginner.

--Roger

> --
> 42Bastian
> +
> | http://www.sciopta.com
> | Fastest direct message passing kernel.
> | IEC61508 certified.
> +
>