External watchdog in i. MxRT1024

[sowmiya_a]

Hi,

Is there some example of external watchdog implementation in i.MXRT1024 & what should I do to implement it? 

[EdwinHz]

Hi @sowmiya_a,

You can find examples of the External Watchdog Monitor (EWM) on the RT1024 SDK, under "driver examples" > "ewm". Please let me know if this helps.

BR,

Edwin.

[sowmiya_a]

Hi @EdwinHz 

Thanks for the response, Edwin.

Can i connect watch dog timer (TPS3850H01DRCT like externally) to the POR pin?

[EdwinHz]

Yes, you should be able to connect the output of your external watchdog timer to the POR pin.

However, from the TPS3850H01DRCT datasheet, I see that the recommendation is to connect it to a NMI pin, so I suggest doing it this way instead.

BR,

Edwin.

[sowmiya_a]

Hi @EdwinHz ,

Based on your response, I understand that TPS3850H01DRCT (WDO) can be connected to the POR pin which is also a non-maskable interrupt pin (NMI) of MIMXRT1024CAG4B. Is my understanding correct?

[EdwinHz]

Yes, correct.

BR,
Edwin.