Host implementation of pico_multicore #440

New issue

Open

opened 2021-05-23 15:02:42 -05:00 by jonathangjertsen · 5 comments

jonathangjertsen commented

2021-05-23 15:02:42 -05:00

(Migrated from github.com)

It would be nice to have a host implementation of the multicore functionality which uses threads (or processes?) in place of the two cores.

I've started on an implementation here: https://gist.github.com/jonathangjertsen/590141bc17ffb47d0f091c6ab82396f3
The test uses the Unity framework. I haven't made a PR because there is a known bug (test_multicore_fifo_pop_timeout_us fails half the time and I don't know why), and also because I couldn't figure out how to integrate it into the pico-sdk build system. Feel free to build on it though.

It would be nice to have a host implementation of the multicore functionality which uses threads (or processes?) in place of the two cores. I've started on an implementation here: https://gist.github.com/jonathangjertsen/590141bc17ffb47d0f091c6ab82396f3 The test uses the Unity framework. I haven't made a PR because there is a known bug (`test_multicore_fifo_pop_timeout_us` fails half the time and I don't know why), and also because I couldn't figure out how to integrate it into the pico-sdk build system. Feel free to build on it though.

kilograham commented

2021-05-23 19:45:01 -05:00

(Migrated from github.com)

there is an implementation in pico_host_sdl that uses SDL

there is an implementation in `pico_host_sdl` that uses SDL

kilograham commented

2021-05-23 19:45:52 -05:00

(Migrated from github.com)

https://github.com/raspberrypi/pico-host-sdl/blob/master/README.md

jonathangjertsen commented

2021-05-24 09:16:31 -05:00

(Migrated from github.com)

Yes I saw, but it is incomplete (in particular, no FIFO support) and it would be nice to avoid having to pull in SDL if you're testing something other than audio/video.

kilograham commented

2021-05-24 10:05:50 -05:00

(Migrated from github.com)

(in particular, no FIFO support)

Frankly, we are discouraging the use of the FIFOs (for most things anyway) anyway, as they are a unique resource (needed by RTOS impls, core 1 launch, and interrupting the other core)...

Yeah, i would probably have included threads by default were pthread available on windows; that said building with MSVC has issues anyway; not sure if there is a pthread impl for windows for use with gcc (or other) > (in particular, no FIFO support) Frankly, we are discouraging the use of the FIFOs (for most things anyway) anyway, as they are a unique resource (needed by RTOS impls, core 1 launch, and interrupting the other core)...

jonathangjertsen commented

2021-05-24 10:37:35 -05:00

(Migrated from github.com)

not sure if there is a pthread impl for windows for use with gcc (or other)

MinGW has it - not sure if it's included by default or if it has to be installed

> not sure if there is a pthread impl for windows for use with gcc (or other) MinGW has it - not sure if it's included by default or if it has to be installed