Soft-Shutdown using GPIO on Orin AGX Dev Kit

[brandon.kelly]

Hello all. I am interested in shutting down the Orin AGX dev kit when our enclosure loses power. We currently have it installed with a UPS. Our current plan is to monitor the power state and hold a GPIO pin high while we are recieving power and then drop it to low when the power turns off. We then want the Orin to initiate a software shutdown before our UPS reaches our prescribed t_delay where it will cut power.

1. Is this the recommended way to complete this tasks?(I couldn’t find any other topics on the forum matching it or information in the data sheet)
2. Are there any good resources to review to ensure I do not damage the Orin when building the circuit?
3. If this will not work, what other places can I look? I noticed in the datasheet that power-down signal can be sent over CAN Bus. While we don’t have a CAN connection currently, we could set one up to negiotate power states. I was unable to find any resources beyond that mention though. What else should I try?

[brandon.kelly]

I think this might have been posted to the wrong thread(unless it is an automated reply). Just want to make sure it gets to the right person if it was.

[KevinFFF]

Hi brandon.kelly,

It seems you are requesting a custom use case that something you have to implement.

@brandon.kelly

Our current plan is to monitor the power state and hold a GPIO pin high while we are recieving power and then drop it to low when the power turns off.

Do you mean a GPIO on AGX Orin? Or you UPS will monitor it?

Currently, you can check the behavior of SYS_RESET_N, which will be pulled low after reboot/shutdown command. I’m not sure if this GPIO can meet your requirement.