topic Re: imx rt 1064 nmi power failure detection interrupt in i.MX RT Crossover MCUs

imx rt 1064 nmi power failure detection interrupt

vasudhevan — Fri, 20 Nov 2020 03:22:51 GMT

Hi,

We want to detect power failure using NMI interrupt.

But in sdk there is no nmi drivers available.

Whenever power failure is happens callback function should be trigger.

How to use nmi pin as interrupt ?

Thanks & Regards,

Vasu

Re: imx rt 1064 nmi power failure detection interrupt

jeremyzhou — Fri, 20 Nov 2020 06:48:22 GMT

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
1) How to use nmi pin as interrupt ?
-- Firstly, configure the Wake-up pin as the NMI pin, then enable the NMI interrupt. After that, the pin detects a low voltage input which will trigger the NMI interrupt.

Have a great day,
TIC

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Re: imx rt 1064 nmi power failure detection interrupt

vasudhevan — Fri, 20 Nov 2020 07:14:06 GMT

Hi @jeremyzhou ,

Thanks for your reply.

Using config tool we can configure nmi interrupt pin but which driver we have to use to initialize the nmi driver ?

We have to use same gpio driver ?

Thanks & Regards,

Vasu

Re: imx rt 1064 nmi power failure detection interrupt

jeremyzhou — Fri, 20 Nov 2020 08:51:57 GMT

Hi,
Thanks for your reply.
Actually, I'm a bit confused with your questions, can explain them again?
Have a great day,
TIC

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Re: imx rt 1064 nmi power failure detection interrupt

vasudhevan — Tue, 05 Jan 2021 11:09:53 GMT

Hi @jeremyzhou ,

Any specific driver required to use for nmi pin?

Regarding configuring wake up pin as nmi pin, we can do it in config window right?

Re: imx rt 1064 nmi power failure detection interrupt

jeremyzhou — Wed, 06 Jan 2021 03:05:16 GMT

Hi,
Thanks for your reply.
1) Any specific driver required to use for nmi pin?
-- No
2) Regarding configuring wake up pin as nmi pin, we can do it in config window right?
-- Yes.

Have a great day,
TIC

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Re: imx rt 1064 nmi power failure detection interrupt

vasudhevan — Thu, 07 Jan 2021 04:02:38 GMT

Hi @jeremyzhou ,

Thanks for your reply.

Will check and get back to you if we have any doubt.

We are running another thread regarding MQTT TLS issue, can you please check and revert back to us.

Re: imx rt 1064 nmi power failure detection interrupt

vasudhevan — Fri, 15 Jan 2021 10:48:23 GMT

Hi @jeremyzhou ,

We have modified the pin configuration. Pin triggered when we set as GPIO and printing the message.

When we set as nmi, its not triggering any thing. Attached .c file for you reference.

Re: imx rt 1064 nmi power failure detection interrupt

jeremyzhou — Mon, 01 Feb 2021 08:48:21 GMT

Hi,
Sorry for the reply late.
After checking, the NMI is triggered by a high level.
Have a great day,
TIC

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Re: imx rt 1064 nmi power failure detection interrupt

caleb — Wed, 06 Jul 2022 23:34:44 GMT

Jeremy wrote

Sorry for the reply late.
After checking, the NMI is triggered by a high level.
Have a great day,
TIC

So... does this mean there is no power failure detection circuit? How do you do power failure detection? Is there a solution?

Thanks!