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sai_sdma_record_playback

sai_sdma_record_playback#

Overview#

The sai_sdma_record_playback example shows how to use sai driver with SDMA:

In this example, one sai instance record the audio data from input and playbacks the audio data.

Supported Boards#

EVK-MIMX8MP
Hardware requirements

  • Micro USB cable

  • EVK-MIMX8M Plus board

  • J-Link Debug Probe

  • 12V power supply

  • Personal Computer

  • Headphone(CTIA standard)

Board settings

No special settings are required.

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. Launch the debugger in your IDE to begin running the demo.

Running the demo

note: This demo uses codec master mode(external mclk mode).

When the demo runs successfully, you can hear the recorded sound from the headphone mic on the left and the log would be seen on the terminal like:

SAI SDMA record playback example started!
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