On Fri, Jan 26, 2024 at 1:01 PM yfliu2008 <yfliu2...@qq.com.invalid> wrote:
> Dear experts, > > > > > I am wondering where we can find high level introduction about the RPTUN > and RPMSG concepts in NuttX? > > > 2022 online workshop has a introduction presentation: https://www.youtube.com/watch?v=6uehz3WQ0vU&t=211s > > > I can't find explanations of the two NuttX drivers and their relationship > with the two OpenAMP components "RemoteProc" and "RPMsg". Can we simply > take that the "NuttX.RPTUN" abstracts the "OpenAMP.RemoteProc" and the > "NuttX.RPMSG" wraps the "OpenAMP.RPMsg"? > > Yes, NuttX.RPTUN equals OpenAMP.RemoteProc, which implements many OpenAMP required functions, and defines a bunch of callbacks for customization. > > Can we also take that RPMSG models the communication channel between > master and a remote core, like other master/slave buses such as SPI/I2C, > thus various proxy drivers (like block, uart, syslog etc) for remote > to use can be built on top of the RPMSG bus? > > Yes, we are working on this area to: 1. Decouple rpmsg from virtio 2. Implement new rpmsg transport(e.g. SPI, UART) Part of this work upstream recently, more will come soon: https://github.com/apache/nuttx/pulls?q=is%3Apr+author%3Awyr8899+ After we finish all work, all high level rpmsg driver/service(e.g. rpmsg syslog/uart/usrsock/fs...) will work for shared memory and spi/uart. > > > Regards, > yf
