Yahoo Groups archive
Thread
2006-05-13 by naderus2000
hi, is any one here that full success implement mp3 decoder in sofware with lpc21xx?(lpc2148 best choice) i read a document that author was able to implement the MP3 decoding software with limited success only � the data is taken from on-board flash (no SD) i want toi know if i add SD card routine is a there any time to decode mp3 in real time?
2006-05-13 by Michael Anton
I currently have software running on an LPC2148 that reads mp3 files from an SD card, and ships the data off to an mp3 decoder chip. This takes about 10% CPU usage, so if decoding can be done with 50% CPU usage, it should be possible. I'm using the EFSL library for access to the SD card. Mike Anton
> -----Original Message----- > From: lpc2000@yahoogroups.com > [mailto:lpc2000@yahoogroups.com]On Behalf > Of naderus2000 > Sent: Saturday, May 13, 2006 12:31 PM > To: lpc2000@yahoogroups.com > Subject: [lpc2000] mp3 decoder in software with lpc2148 in real time > > > hi, > is any one here that full success implement mp3 decoder in sofware > with lpc21xx?(lpc2148 best choice) > i read a document that author was able to implement the MP3 decoding > software with limited success only \ufffd the data is taken from on-board > flash (no SD) > i want toi know if i add SD card routine is a there any time > to decode > mp3 in real time? >
2006-05-14 by Jan Szymanski
--- In lpc2000@yahoogroups.com, "naderus2000" <naderus2000@...> wrote: > > hi, > is any one here that full success implement mp3 decoder in sofware > with lpc21xx?(lpc2148 best choice) > i read a document that author was able to implement the MP3 decoding > software with limited success only the data is taken from on-board > flash (no SD) > i want toi know if i add SD card routine is a there any time to decode > mp3 in real time? > yes, I had a full success running helix code as described here http://www.jandspromotions.com/philips2005/Winners/AR1754.htm on LPC2148 with SD card on SPI0 and audio dac on SSP(SPI1) Jan
2006-05-14 by nader chinichian
hi,
thanks for reply,
could you please send for me your code.
i'm new in Arm and have a lot problem on it.
do you think can At91sam7 do it?
thanks a lot.
Jan Szymanski <janek@...> wrote:
--- In lpc2000@yahoogroups.com, "naderus2000" <naderus2000@...> wrote:
>
> hi,
> is any one here that full success implement mp3 decoder in sofware
> with lpc21xx?(lpc2148 best choice)
> i read a document that author was able to implement the MP3 decoding
> software with limited success only the data is taken from on-board
> flash (no SD)
> i want toi know if i add SD card routine is a there any time to
decode
> mp3 in real time?
>
yes, I had a full success running helix code as described here
http://www.jandspromotions.com/philips2005/Winners/AR1754.htm
on LPC2148 with SD card on SPI0 and audio dac on SSP(SPI1)
Jan
SPONSORED LINKS
Microcontrollers Microprocessor Intel microprocessors
---------------------------------
YAHOO! GROUPS LINKS
Visit your group "lpc2000" on the web.
To unsubscribe from this group, send an email to:
lpc2000-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
---------------------------------
---------------------------------
Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.
[Non-text portions of this message have been removed]2006-05-14 by Martin Maurer
Hello,
i am not the originator of the code, but you can download it directly from
the given page. Click on "Entry" under the picture !
BTW: Very nice projects on a few levels higher than given link:
http://www.jandspromotions.com/philips2005/
http://www.jandspromotions.com/philips2005/DE-list.htm
Regards,
Martin----- Original Message -----
From: "nader chinichian" <naderus2000@...>
To: <lpc2000@yahoogroups.com>
Sent: Sunday, May 14, 2006 9:05 PM
Subject: Re: [lpc2000] Re: mp3 decoder in software with lpc2148 in real time
hi,
thanks for reply,
could you please send for me your code.
i'm new in Arm and have a lot problem on it.
do you think can At91sam7 do it?
thanks a lot.
Jan Szymanski <janek@...> wrote:
--- In lpc2000@yahoogroups.com, "naderus2000" <naderus2000@...> wrote:
>
> hi,
> is any one here that full success implement mp3 decoder in sofware
> with lpc21xx?(lpc2148 best choice)
> i read a document that author was able to implement the MP3 decoding
> software with limited success only - the data is taken from on-board
> flash (no SD)
> i want toi know if i add SD card routine is a there any time to
decode
> mp3 in real time?
>
yes, I had a full success running helix code as described here
http://www.jandspromotions.com/philips2005/Winners/AR1754.htm
on LPC2148 with SD card on SPI0 and audio dac on SSP(SPI1)
Jan
SPONSORED LINKS
Microcontrollers Microprocessor Intel microprocessors
---------------------------------
YAHOO! GROUPS LINKS
Visit your group "lpc2000" on the web.
To unsubscribe from this group, send an email to:
lpc2000-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
---------------------------------
---------------------------------
Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.
[Non-text portions of this message have been removed]
Yahoo! Groups Links2006-05-15 by nader chinichian
thanks
but i see this code.
it didn't handle in real time.
it only read the code from flash.
you told that you impiliment with SD and in real time.
if you can send a code that full implimentation.(sd+i2s+real time decode)
thanks
Martin Maurer <mailingliste@...> wrote:
Hello,
i am not the originator of the code, but you can download it directly from
the given page. Click on "Entry" under the picture !
BTW: Very nice projects on a few levels higher than given link:
http://www.jandspromotions.com/philips2005/
http://www.jandspromotions.com/philips2005/DE-list.htm
Regards,
Martin----- Original Message -----
From: "nader chinichian" <naderus2000@...>
To: <lpc2000@yahoogroups.com>
Sent: Sunday, May 14, 2006 9:05 PM
Subject: Re: [lpc2000] Re: mp3 decoder in software with lpc2148 in real time
hi,
thanks for reply,
could you please send for me your code.
i'm new in Arm and have a lot problem on it.
do you think can At91sam7 do it?
thanks a lot.
Jan Szymanski <janek@...> wrote:
--- In lpc2000@yahoogroups.com, "naderus2000" <naderus2000@...> wrote:
>
> hi,
> is any one here that full success implement mp3 decoder in sofware
> with lpc21xx?(lpc2148 best choice)
> i read a document that author was able to implement the MP3 decoding
> software with limited success only - the data is taken from on-board
> flash (no SD)
> i want toi know if i add SD card routine is a there any time to
decode
> mp3 in real time?
>
yes, I had a full success running helix code as described here
http://www.jandspromotions.com/philips2005/Winners/AR1754.htm
on LPC2148 with SD card on SPI0 and audio dac on SSP(SPI1)
Jan
SPONSORED LINKS
Microcontrollers Microprocessor Intel microprocessors
---------------------------------
YAHOO! GROUPS LINKS
Visit your group "lpc2000" on the web.
To unsubscribe from this group, send an email to:
lpc2000-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
---------------------------------
---------------------------------
Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.
[Non-text portions of this message have been removed]
Yahoo! Groups Links
SPONSORED LINKS
Microcontrollers Microprocessor Intel microprocessors
---------------------------------
YAHOO! GROUPS LINKS
Visit your group "lpc2000" on the web.
To unsubscribe from this group, send an email to:
lpc2000-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
---------------------------------
---------------------------------
Love cheap thrills? Enjoy PC-to-Phone calls to 30+ countries for just 2¢/min with Yahoo! Messenger with Voice.
[Non-text portions of this message have been removed]