usb_audio_loopback_stm32f723disco

Use a 32F723EDISCOVERY eval board as a USB audio soundcard with parametric EQ, compressor and expander.

This project allow the use of a 32F723EDISCOVERY eval board as a soundcard with additional post processing.

The audio path is like this:

Usage

To do this, you must do the following:

• Flash this firmware to a 32F723EDISCOVERY eval board:
  • With STLINK Mass storage drag'n drop:
    • Download damc_stm32f723disco-vX.Y.Z-stlink_dragdrop.zip
    • Copy either damc_stm32f723disco.hex or damc_stm32f723disco.bin to the USB Mass storage device
    • This will flash your board
  • With STM32CubeProgrammer:
    • Download damc_stm32f723disco-vX.Y.Z-stm32cubeprogrammer.zip
    • Flash the board using STM32CubeProgrammer and damc_stm32f723disco.elf
• Power-up and connect the board using USB
  • Switch the power supply from STLINK USB cable to the USB HS cable by putting the jumper on USB HS on CN8 connector (under the board)
  • 
  • Connect a micro-USB cable to the USB HS connector of the eval board:
  • 
• Download damc-gui for your platform (Windows 32 bits / 64 bits or Linux)
  • Run damc_gui_serial.bat to run damc-gui and control the board via its serial port
  • You should get something like this:

2 audio outputs and 1 audio inputs should appear in Windows.

The supported audio format is 48000 Hz, Stereo, 16 bits.

For each strip, audio is processed in this order:

• Equalizers
• Expander
• Compressor
• Volume
• Peak meter take the audio levels here
• Mute