SPIFI for MP3 files

[lpcware]

Content originally posted in LPCWare by poonam on Fri Feb 08 05:03:51 MST 2013
Hi,

can we store the MP3 files on the SPIFI.?

Actually I am using external S25FL256S flash with LPC4350..i want to store the Mp3 files on that and read back those files.

So I am looking for the files for latest release of SPIFI library to get read and write API..


Thanks,
Poonam

[lpcware]

Content originally posted in LPCWare by bavarian on Wed Feb 13 03:05:49 MST 2013
Hi Poonam,

take a look at the software packages which we have on the web:

http://www.lpcware.com/content/nxpfile/lpc4350apdlzip
http://www.lpcware.com/content/nxpfile/lpcopen-platform

There are examples for programming the qSPI flash.
Reading is straight forward.
To use the SPIFI you need to boot either in SPIFI mode (bootloader is doing SPIFI init),
or you boot from somewhere else and you init the SPIFI in your code.

You need to consider one thing: if you execute from SPIFI and if you read/write data on the SPIFI, then you get into a timing conflict.
Solutions for that:
- use external parallel flash for the executable code (pretty slow)
- use the LPC4357 with internal flash (pretty fast)
- re-locate executable code from the qSPI to internal RAM


Best regards,
NXP Technical Support.