Demo: I2S sound output and MP3 decoding in an ESP8266

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Re: Demo: I2S sound output and MP3 decoding in an ESP8266

By HolgerW
- Sun Jul 12, 2015 8:08 am #23060 Hi,
i added a external RAM and it work great.
Now i want to set up a small webserver, but i dont know how i can do that.
I looked in some examples, but it doesnt work really, most miss any libs.
Anybody have a nice example for me that works with the libs in this project ?

HolgerW
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Re: Demo: I2S sound output and MP3 decoding in an ESP8266

By Jorge
- Mon Jul 13, 2015 10:08 am #23145 Hi All,

Now I have a complete platform with I2S DAC and SPI RAM working enough well, using the ESP12E module. My main concern is the RAM because is nearly exhausted only with the MP3 library. I have studied the mapfile looking for optimizations that allow me increase the code with other functionalities.

However, I have noticed that the linked libraries are using a lot of RAM memory also I'd like to reduce this use. So the question is if it is possible to get some source code of the libraries in order to recompile, for example freertos porting.

Also I don't know if I can translate the strings and some constants to the FLASH memory. I did some experiments but it doesn't seem to work.

I think that this kind of improving are important in order to use the ESP8266 modules in project like mp3 players or some kind of VoIP module.

Regards.
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