Hardware requirements

Board settings

No special settings are required.

Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Note: To download binary into hyper flash and boot from hyperflash directly, following steps are needed:

Select the target flexspi_nor_debug or flexspi_nor_release.
Compile the project, and get the binaray file “rtwdog.bin”
Set the SW7: 1 off 2 off 3 off 4 on, then power on the board and connect USB cable to J28
Drop the binaray into disk “EVK-MIMXRT”
Wait for the disk disappear and appear again which will take around ~10s, then power off the board
Set the SW7: 1 off 2 on 3 on 4 off, then power on the board
After power on the baord, program has already started to run, reset SW4 is recommended.

Note: To debug in hyper flash in MDK, following steps are needed:

Select the target flexspi_nor_debug or flexspi_nor_release.
Compile the project.
Press F8 or click the download button, to program the application into hyper flash.
Set the SW7: 1 off 2 on 3 on 4 off, then power on the board
Push SW4 to reset.
Start to debug.

These instructions are displayed/shown on the terminal window:

******** System Start ********
System reset by: Power On Reset!

- 1.Testing System reset by software trigger.
******** System Start ********
System reset by: Software Reset!

- 2.Testing system reset by WDOG timeout.
--- wdog Init done---

******** System Start ********
System reset by: Time Out Reset!

- 3.Test the WDOG refresh function by using interrupt.
--- wdog Init done---

WDOG has be refreshed!
WDOG has be refreshed!
WDOG has be refreshed!

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