Hardware requirements

  • Micro USB cable

  • EVK-MIMX8M Plus board

  • J-Link Debug Probe

  • 12V power supply

  • Personal Computer

  • Headphone

Board settings

No special settings are required.

NOTE

  1. This case does not support TCM targets because of limited memory size.

Please note this application can’t support running with Linux BSP!

Prepare the Demo

  1. Connect 12V power supply and J-Link Debug Probe to the board, switch SW3 to power on the board

  2. Connect a USB cable between the host PC and the J23 USB port on the target board.

  3. Open a serial terminal with the following settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  4. Download the program to the target board.

  5. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo

When the demo runs successfully, you will hear two audio clips, the first one is the original 48k, the second one is the converted 16K and the log would be seen on the terminal like:

ASRC memory to memory SDMA example.

Playback raw audio data

    sample rate : 48000

    channel number: 2

    frequency: 1KHZ.



Playback converted audio data

    sample rate : 16000

    channel number: 2

    frequency: 1KHZ.



ASRC memory to memory SDMA example finished.