On Sat, Jun 13, 2020 at 2:25 PM Brennan Ashton <bash...@brennanashton.com> wrote: > > On Sat, Jun 13, 2020 at 1:56 PM Gregory Nutt <spudan...@gmail.com> wrote: > > The problem is that in the context of the OS instrumentation call-outs, > > we can do no driver operations. With the FT245R, it could do writes to > > a memory-mapped FIFO. Most of the FX2LP modes are more complex. There > > is a slave FIFO, but I don't fully understand that yet. > > If you want to just stream data to the FIFO then yes that is probably > the right way to go. > This app note shows the basic setup > https://www.cypress.com/file/44551/download > You have up-to 16 data lines that map to the fifo > FLAGA/D show the status of the FIFO so probably can be ignored if you > are OK with losing data > SLOE probably can be always asserted > SLRD/WR can also be fixed value since we won't be reading > FIFOADDR is just selecting which bank/endpoint you are writing to, so > once again likely can be hard coded. > > I don't think I have a dev board for this anymore, last design I did > with this was a few years back, but I would be open to tracking one > down if this is a path you want to go. > > --Brennan
You sucked me in. It was only $8 to get one here tomorrow... and I am not sure I can find another use for it even if this does not work out. For those following along, you can find the board I am talking about on ebay, amazon, etc.. by looking for "EX-USB FX2LP" --Brennan
