On Mon, Jan 3, 2011 at 3:00 PM, Philip Downer <p...@pjd.me.uk> wrote:
> On 03/01/11 12:47, Kfir Lavi wrote: > > I have a FPGA that is constantly changing (its on development phase). >> I want to let userspace app to update those registers, but don't want to >> create an API yet. >> What is the best way to open a range of registers to userspace, so no >> driver update is required? >> > > When I had to do this recently I used sysfs, I have no idea if it's the > best way but it certainly was very effective. Remember in sysfs that each > file should only have one value. > > Once it's setup though you can just write to the sysfs files, I started by > writing simple perl scripts to test things before starting to write more > complex apps. > > HTH > > Phil > So what do expose in sysfs? for each register - a file of it's own? or you get a bulk of data to one file? Thanks, Kfir
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