Is it possible to turn almost everything on a Raspberry Pi off (CPU GPU etc), except for the ram?
Basically putting the Pi in a low power state but preserving whatever it was doing at the moment on which it was turned off?
1
migrated from electronics.stackexchange.com Dec 12 '17 at 22:52
This question came from our site for electronics and electrical engineering professionals, students, and enthusiasts.
-
3Isn't that called "Sleep"? – Harry Svensson Dec 12 '17 at 19:35
-
2Do not be sorry. It is actually better to keep the topics separate. You did right. – Trevor Dec 12 '17 at 19:42
-
1Rasp may not be the right CPU for what you are considering. How much RAM are you thinking about anyway? – Trevor Dec 12 '17 at 19:45
-
1Hi, my original plan was actually to have a separate device which would store the data and have the program that generates the data run on the Raspberry Pi, but I have now learned that building such a device is very difficult so I thought about having the Pi save the data to it's own RAM and keeping only the RAM enabled when a low power state is needed, but it seems like that is not possible and the Raspberry Pi doesn't have enough RAM, I need 2 gigs. I think I underestimated this problem and there is no easy solution. – adjustt Dec 12 '17 at 19:53
-
how fast is the data being generated? can you use a usb flash drive for storage? – jsotola Dec 12 '17 at 20:00
0
No, the DRAM needs to be refreshed which is not a function you can run independent of the GPU. It is all or nothing.
-
2Actually, most modern DRAM chips do have a self-refresh mode. But it must be explicitly entered before shutting down the rest of the system. – Dave Tweed Dec 12 '17 at 22:40
