Power fail interrup
Added by Clyde Shappee over 7 years ago
What is the recommended input to the SOM for a power fail interrupt?
clyde
Replies (3)
RE: Power fail interrup - Added by Daniel Vincelette over 7 years ago
Hello Clyde,
Could you describe the situation a bit more?
Thanks!
Dan
RE: Power fail interrupt - Added by Clyde Shappee over 7 years ago
What more is there to say, really? We have a low voltage supervisor in our design and when the power is going to fail, we would like to take the necessary precautions before power is completely gone.
RE: Power fail interrup - Added by Alexander Block over 7 years ago
Clyde,
Offhand our recommendation would be to utilize an HPS GPIO and have it configured in the GPIO controller as an interrupt.
Additionally it would be pertinent to know how long you expect power to persist after this interrupt is triggered. A lot of our specific software recommendations depend on the time the module remains powered.
Can you please describe what you are trying to protect with these "necessary precautions". Are you trying to prevent data loss, allow your application to complete its current process, shut-down the OS completely or something else? With this information we can provide a more detailed response and recommendation.
Thank you,
Alex
