pipeline_spiffs_mp3

Play MP3 file from flash (spiffs system)

The demo plays a MP3 stored on the flash using audio pipeline API

Compatibility

This example is will run on boards marked with green checkbox. Please remember to select the board in menuconfig as discussed is section Usage below.

Board Name	Getting Started	Chip	Compatible
ESP32-LyraT
ESP32-LyraTD-MSC
ESP32-LyraT-Mini
ESP32-Korvo-DU1906
ESP32-S2-Kaluga-1 Kit

Usage

Prepare the audio board:

• Connect speakers or headphones to the board.

Configure the example:

• Select compatible audio board in menuconfig > Audio HAL.

Make Spiffs file

• Get the mkspiffs from github/spiffs

  • git clone https://github.com/igrr/mkspiffs.git

• Complie the mkspiffs

  cd mkspiffs
  make clean
  make dist CPPFLAGS="-DSPIFFS_OBJ_META_LEN=4"
  

• Copy music files into tools folder(There is only one adf_music.mp3 file in the default tools file).

• Running command ./mkspiffs -c ./tools -b 4096 -p 256 -s 0x100000 ./tools/adf_music.bin. Then, all of the music files are compressed into adf_music.bin file.

Download

• Create partition table as follow

    nvs,      data, nvs,     ,        0x6000,
    phy_init, data, phy,     ,        0x1000,
    factory,  app,  factory, ,        1M,
    storage,  data, spiffs,  0x110000,1M, 
  

• Download the spiffs bin. Now the ./tools/adf_music.bin include adf_music.mp3 only (All MP3 files will eventually generate a bin file).

  python $ADF_PATH/esp-idf/components/esptool_py/esptool/esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 115200 write_flash -z 0x110000 ./tools/adf_music.bin