Hardware requirements

• Micro USB cable

• MCIMX7ULP-EVK board

• J-Link Debug Probe

• 5V power supply

• Personal Computer

Board settings

The example requires connecting the FLEXIO pins with the USB2COM pins The connection should be set as follows:

• TP25 on base board, TX of USB2COM connected

• TP27 on base board, RX of USB2COM connected

• GND on base board, Ground of USB2COM connected

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

Prepare the Demo

1. Connect 5V power supply and J-Link Debug Probe to the board, switch SW1 to power on the board.

2. Connect a micro USB cable between the host PC and the J6 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 example

Running the demo

When the demo runs successfully, the log would be seen on the UART Terminal port which connected to the USB2COM like:

FLEXIO UART RX ring buffer example
Send back received data
Echo every 8 bytes