Hardware requirements

  • Micro USB cable

  • MIMX8MN6-EVK board

  • J-Link Debug Probe

  • 12V power supply

  • Personal Computer

Board settings

No special settings are required.

Please note this application can’t support booting by uboot! and accordingly it does not support Flash target! This example aims to show the basic usage of the IP’s function, some of the used Resources are assigned to Cortex-A core by uboot. To run the example, boot the A core into U-Boot and run the following command in the U-Boot console before starting the example to re-assign the resource.

u-boot=> mw.b 0x303d022c 1 1

Prepare the Demo

  1. Connect 12V power supply and J-Link Debug Probe to the board, switch SW101 to power on the board

  2. Connect a USB cable between the host PC and the J901 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

When the demo runs successfully, the log would be seen on the debug terminal like:

Uart sdma transfer example!
Uart will receive 8 charactes every time, if less characters were received, 
Uart will generate the idle line detect interrupt, SDMA receive operation will be aborted.
Board will send the received characters out.
Now please input: