SparkFun Forums

[andreas]

http://www.mikrocontroller.net/articles ... AAC_Player

[phalanx]

Care to elaborate on your link?

-Bill

[andreas]

Sorry. It's a MP3/AAC player with a SAM7S256 board from Olimex. I don't have any particular question, just wanted to get that listed here because the forum description said "Projects in the works - share your ideas with the world".

[bertrik]

How much processor power does it take to decode mp3 with the helix code?
Have you also considered libmad?

What do you think of the elm-chan file system?
Have you also considered other FAT filesystems (like EFSL)?

[andreas]

It takes about 70%, depending on the bitrate. I have considered libmad, but chosen the Helix library because its memory/CPU requirements were better documented.

The elm-chan file system is a great piece of software. It's easy to use, fast, has low memory requirements and good documentation. I have used EFSL before I switched to the elm-chan lib, and found it a bit overengineered and not very well documented.

[bertrik]

Thanks for your answer. I'm about to decide what FS to use for my own project and I'm considering the elm-chan lib and EFSL. I like the simplicity of the elm-chan lib and it seems to be cleverly designed. On the other hand, EFSL seems to have more of a community behind it (SF page with CVS archive, forums, bug report page etc.).
I was just curious about the processor power, seems like a nice project to try to port to an LPC microcontroller.