mlyszczek opened a new pull request, #6537:
URL: https://github.com/apache/incubator-nuttx/pull/6537
This is proposal of new driver for IPCC (inter processor communication
controller).
This is still work in progress but I would like to request small review now.
Mainly I would like you to review interfaces as this is common code for all
architectures.
The only test I did was to properly compile it.
I will be implementing lower half of the driver now, and it would be cool to
have at least interfaces reviewed before I do all the stuff and will have to
change half of the code :)
I've implemented IPCC as character device, very similar to ordinary UART
with separate tx and rx (full duplex). It's interrupt driven - lower half
driver will clear/fill buffers (if buffering is enabled) and notify
blocked/polling threads. It should be enough to simply call ipcc_register(0);
to register single full duplex /dev/ipcc0 device. Then simple open/read/write
to get/send data.
It's a lower half driver responsibility to prepare (reserve) memory for
IPCC. arch/ part will also have to take IPCC into account when passing heap
memory for OS - reserved memory should not be exposed to OS as it's shared
between CPUs which can have different OSes on them. Lower layer will also be
responsible to send message in proper format, like
struct { uint32_t buflen; unsigned char buf[] };
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
