i.MX ProcessorsのトピックTesting WDOG in i.mx93

Testing WDOG in i.mx93

Robbi — Mon, 10 Mar 2025 09:57:21 GMT

Hi Team,

I'm trying to test internal WDOG in imx93. There are WDOG1-WDOG5, where 4,5 are for A-55. I had gone through all WDOG section in RM. Which contains Registers, unlocking mechanisms and soon. But my doubt is Which WDOG is used for the application given in RM SEC-69.And How to config particular WDOG.

Another thing there is a pin WDOG_ANY showing as ALT0, but in RM it is showing there is no external signals for WDOG. So this WDOG are used for internal purpose only as a interrupts.

Suggest me to test internal WDOG in imx93-11x11 EVK.

Thanks

Robbi.

Re: Testing WDOG in i.mx93

danielchen — Tue, 11 Mar 2025 07:42:47 GMT

Hi @Robbi

For how to configure WDOG, I would suggest you refer to i.mx93 SDK.

You can download the SDK (MCIMX93-EVK) from

MCUXpresso SDK Builder

In the SDK, there is a WDOG32 example, fast testing is first implemented to test the wdog32. After this, refreshing the watchdog in none-window mode and window mode is executed. Please refer to the demo for more details.

Regards

Daniel

Re: Testing WDOG in i.mx93

danielchen — Tue, 11 Mar 2025 11:31:16 GMT

For WDOG_ANY, it is an output,

on the EVK the iMX93 WDOG_ANY, pin J18, is wired on the PCA9451A WDOG_B, pin 28.

Regards

Daniel

Re: Testing WDOG in i.mx93

Robbi — Wed, 12 Mar 2025 08:47:23 GMT

Thanks @danielchen ,

I'm using MCUXpressoIDE extension in VSCODE. And as per approach installed MIMX-93SDK and imported the wdog33 example. During the build I getting few errors

bitbake directory not found.
cmake configure not found.

PFA,

And I if flashed this bin file the target will be A-55 or M-33 (do I need to change any boot mode settings).

Thanks

Robbi

Re: Testing WDOG in i.mx93

danielchen — Fri, 14 Mar 2025 10:06:19 GMT

Hi Robbi:

AN14220 described how to debug cortex-M with VS code on i.MX 93. A few prerequisites needs to be installed first.

Please refer to below link for more details.

https://docs.nxp.com/bundle/AN14120/page/topics/introduction.html

Regards

Daniel