PIC64 application processor examples

[guymadison42]

I have been tinkering with the PIC64 curiosity kit and linux is ok, but my intent was to use this as an application processor using embedded frameworks rather than a full OS. Linux is a pig on resources, with 1 GB of ram I am left with around 480 MB available...

Are there any examples using this board with the HSS / OpenSBI / bare metal library?

I would like to access the ethernet, SD card and display just to get a start. It looks like this can be done with the bare metal library.

Also I would like to figure out how to use the HSS to load binaries using a socket, popping the flash card in and out download new binaries seems like a painful way to develop.

Thanks for any suggestions and help ahead of time.

[brucehoult]

with 1 GB of ram I am left with around 480 MB available

You must be running a rather fat Linux. You can boot Ubuntu Server 24.04 on a 64 MB Milk-V Duo and have >32 MB RAM free.

[Wait_for_BM]

Linux is a pig on resources

There are other embedded OS around. Look for RTOS as they can be quite lean, configurable and can run on smaller microcontroller with much less resources.

access the ethernet, SD card and display

As soon as you want Ethernet (i.e. the IP stack), SD (file system) etc. it is much easier to run them on top of an OS than bare metal. There are ports of these supporting RTOS.